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| author | Andrey Andreev <narf@devilix.net> | 2018-01-13 12:57:11 +0100 |
|---|---|---|
| committer | Andrey Andreev <narf@devilix.net> | 2018-01-13 12:57:11 +0100 |
| commit | 02a0518e1c56ba3506f370362ac5ebdb8a138312 (patch) | |
| tree | 8b4684192b403dcae17d298eb4fc9e7ab001acad /user_guide/helpers/date_helper.html | |
| parent | f0b9735d5857e6c07c8f5824b13cff4828db3cfe (diff) | |
[ci skip] 3.1.7 release
Diffstat (limited to 'user_guide/helpers/date_helper.html')
| -rw-r--r-- | user_guide/helpers/date_helper.html | 1256 |
1 files changed, 1256 insertions, 0 deletions
diff --git a/user_guide/helpers/date_helper.html b/user_guide/helpers/date_helper.html new file mode 100644 index 000000000..54b8361e6 --- /dev/null +++ b/user_guide/helpers/date_helper.html @@ -0,0 +1,1256 @@ + + +<!DOCTYPE html> +<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]--> +<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]--> +<head> + <meta charset="utf-8"> + <meta name="viewport" content="width=device-width, initial-scale=1.0"> + + <title>Date Helper — CodeIgniter 3.1.7 documentation</title> + + + + + <link rel="shortcut icon" href="../_static/ci-icon.ico"/> + + + + <link href='https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic|Roboto+Slab:400,700|Inconsolata:400,700&subset=latin,cyrillic' rel='stylesheet' type='text/css'> + + + + + + + + + + <link rel="stylesheet" href="../_static/css/citheme.css" type="text/css" /> + + + + <link rel="index" title="Index" + href="../genindex.html"/> + <link rel="search" title="Search" 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class="reference internal" href="typography_helper.html">Typography Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="url_helper.html">URL Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="xml_helper.html">XML Helper</a></li> +</ul> +</li> +</ul> + + + + </div> + + </nav> + + <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"> + + + <nav class="wy-nav-top" role="navigation" aria-label="top navigation"> + <i data-toggle="wy-nav-top" class="fa fa-bars"></i> + <a href="../index.html">CodeIgniter</a> + </nav> + + + + <div class="wy-nav-content"> + <div class="rst-content"> + <div role="navigation" aria-label="breadcrumbs navigation"> + <ul class="wy-breadcrumbs"> + <li><a href="../index.html">Docs</a> »</li> + + <li><a href="index.html">Helpers</a> »</li> + + <li>Date Helper</li> + <li class="wy-breadcrumbs-aside"> + + </li> + <div style="float:right;margin-left:5px;" id="closeMe"> + <img title="Classic Layout" alt="classic layout" src="data:image/gif;base64,R0lGODlhFAAUAJEAAAAAADMzM////wAAACH5BAUUAAIALAAAAAAUABQAAAImlI+py+0PU5gRBRDM3DxbWoXis42X13USOLauUIqnlsaH/eY6UwAAOw==" /> + </div> + </ul> + <hr/> +</div> + <div role="main" class="document"> + + <div class="section" id="date-helper"> +<h1>Date Helper<a class="headerlink" href="#date-helper" title="Permalink to this headline">¶</a></h1> +<p>The Date Helper file contains functions that help you work with dates.</p> +<div class="contents local topic" id="contents"> +<ul class="simple"> +<li><a class="reference internal" href="#loading-this-helper" id="id1">Loading this Helper</a></li> +<li><a class="reference internal" href="#available-functions" id="id2">Available Functions</a></li> +<li><a class="reference internal" href="#timezone-reference" id="id3">Timezone Reference</a></li> +</ul> +</div> +<div class="custom-index container"></div><div class="section" id="loading-this-helper"> +<h2><a class="toc-backref" href="#id1">Loading this Helper</a><a class="headerlink" href="#loading-this-helper" title="Permalink to this headline">¶</a></h2> +<p>This helper is loaded using the following code:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">helper</span><span class="p">(</span><span class="s1">'date'</span><span class="p">);</span> +</pre></div> +</div> +</div> +<div class="section" id="available-functions"> +<h2><a class="toc-backref" href="#id2">Available Functions</a><a class="headerlink" href="#available-functions" title="Permalink to this headline">¶</a></h2> +<p>The following functions are available:</p> +<dl class="function"> +<dt id="now"> +<code class="descname">now</code><span class="sig-paren">(</span><span class="optional">[</span><em>$timezone = NULL</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#now" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$timezone</strong> (<em>string</em>) – Timezone</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">UNIX timestamp</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">int</p> +</td> +</tr> +</tbody> +</table> +<p>Returns the current time as a UNIX timestamp, referenced either to your server’s +local time or any PHP supported timezone, based on the “time reference” setting +in your config file. If you do not intend to set your master time reference to +any other PHP supported timezone (which you’ll typically do if you run a site +that lets each user set their own timezone settings) there is no benefit to using +this function over PHP’s <code class="docutils literal"><span class="pre">time()</span></code> function.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">echo</span> <span class="nx">now</span><span class="p">(</span><span class="s1">'Australia/Victoria'</span><span class="p">);</span> +</pre></div> +</div> +<p>If a timezone is not provided, it will return <code class="docutils literal"><span class="pre">time()</span></code> based on the +<strong>time_reference</strong> setting.</p> +</dd></dl> + +<dl class="function"> +<dt id="mdate"> +<code class="descname">mdate</code><span class="sig-paren">(</span><span class="optional">[</span><em>$datestr = ''</em><span class="optional">[</span>, <em>$time = ''</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#mdate" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$datestr</strong> (<em>string</em>) – Date string</li> +<li><strong>$time</strong> (<em>int</em>) – UNIX timestamp</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">MySQL-formatted date</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p> +</td> +</tr> +</tbody> +</table> +<p>This function is identical to PHP’s <a class="reference external" href="http://php.net/manual/en/function.date.php">date()</a> +function, except that it lets you use MySQL style date codes, where each +code letter is preceded with a percent sign, e.g. <cite>%Y %m %d</cite></p> +<p>The benefit of doing dates this way is that you don’t have to worry +about escaping any characters that are not date codes, as you would +normally have to do with the <code class="docutils literal"><span class="pre">date()</span></code> function.</p> +<p>Example:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$datestring</span> <span class="o">=</span> <span class="s1">'Year: %Y Month: %m Day: %d - %h:%i %a'</span><span class="p">;</span> +<span class="nv">$time</span> <span class="o">=</span> <span class="nb">time</span><span class="p">();</span> +<span class="k">echo</span> <span class="nx">mdate</span><span class="p">(</span><span class="nv">$datestring</span><span class="p">,</span> <span class="nv">$time</span><span class="p">);</span> +</pre></div> +</div> +<p>If a timestamp is not included in the second parameter the current time +will be used.</p> +</dd></dl> + +<dl class="function"> +<dt id="standard_date"> +<code class="descname">standard_date</code><span class="sig-paren">(</span><span class="optional">[</span><em>$fmt = 'DATE_RFC822'</em><span class="optional">[</span>, <em>$time = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#standard_date" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$fmt</strong> (<em>string</em>) – Date format</li> +<li><strong>$time</strong> (<em>int</em>) – UNIX timestamp</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Formatted date or FALSE on invalid format</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p> +</td> +</tr> +</tbody> +</table> +<p>Lets you generate a date string in one of several standardized formats.</p> +<p>Example:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$format</span> <span class="o">=</span> <span class="s1">'DATE_RFC822'</span><span class="p">;</span> +<span class="nv">$time</span> <span class="o">=</span> <span class="nb">time</span><span class="p">();</span> +<span class="k">echo</span> <span class="nx">standard_date</span><span class="p">(</span><span class="nv">$format</span><span class="p">,</span> <span class="nv">$time</span><span class="p">);</span> +</pre></div> +</div> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p>This function is DEPRECATED. Use the native <code class="docutils literal"><span class="pre">date()</span></code> combined with +<a class="reference external" href="https://secure.php.net/manual/en/class.datetime.php#datetime.constants.types">DateTime’s format constants</a> +instead:</p> +<div class="last highlight-ci"><div class="highlight"><pre><span></span><span class="k">echo</span> <span class="nb">date</span><span class="p">(</span><span class="nx">DATE_RFC822</span><span class="p">,</span> <span class="nb">time</span><span class="p">());</span> +</pre></div> +</div> +</div> +<p><strong>Supported formats:</strong></p> +<table border="1" class="docutils"> +<colgroup> +<col width="20%" /> +<col width="30%" /> +<col width="50%" /> +</colgroup> +<thead valign="bottom"> +<tr class="row-odd"><th class="head">Constant</th> +<th class="head">Description</th> +<th class="head">Example</th> +</tr> +</thead> +<tbody valign="top"> +<tr class="row-even"><td>DATE_ATOM</td> +<td>Atom</td> +<td>2005-08-15T16:13:03+0000</td> +</tr> +<tr class="row-odd"><td>DATE_COOKIE</td> +<td>HTTP Cookies</td> +<td>Sun, 14 Aug 2005 16:13:03 UTC</td> +</tr> +<tr class="row-even"><td>DATE_ISO8601</td> +<td>ISO-8601</td> +<td>2005-08-14T16:13:03+00:00</td> +</tr> +<tr class="row-odd"><td>DATE_RFC822</td> +<td>RFC 822</td> +<td>Sun, 14 Aug 05 16:13:03 UTC</td> +</tr> +<tr class="row-even"><td>DATE_RFC850</td> +<td>RFC 850</td> +<td>Sunday, 14-Aug-05 16:13:03 UTC</td> +</tr> +<tr class="row-odd"><td>DATE_RFC1036</td> +<td>RFC 1036</td> +<td>Sunday, 14-Aug-05 16:13:03 UTC</td> +</tr> +<tr class="row-even"><td>DATE_RFC1123</td> +<td>RFC 1123</td> +<td>Sun, 14 Aug 2005 16:13:03 UTC</td> +</tr> +<tr class="row-odd"><td>DATE_RFC2822</td> +<td>RFC 2822</td> +<td>Sun, 14 Aug 2005 16:13:03 +0000</td> +</tr> +<tr class="row-even"><td>DATE_RSS</td> +<td>RSS</td> +<td>Sun, 14 Aug 2005 16:13:03 UTC</td> +</tr> +<tr class="row-odd"><td>DATE_W3C</td> +<td>W3C</td> +<td>2005-08-14T16:13:03+0000</td> +</tr> +</tbody> +</table> +</dd></dl> + +<dl class="function"> +<dt id="local_to_gmt"> +<code class="descname">local_to_gmt</code><span class="sig-paren">(</span><span class="optional">[</span><em>$time = ''</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#local_to_gmt" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$time</strong> (<em>int</em>) – UNIX timestamp</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">UNIX timestamp</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">int</p> +</td> +</tr> +</tbody> +</table> +<p>Takes a UNIX timestamp as input and returns it as GMT.</p> +<p>Example:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$gmt</span> <span class="o">=</span> <span class="nx">local_to_gmt</span><span class="p">(</span><span class="nb">time</span><span class="p">());</span> +</pre></div> +</div> +</dd></dl> + +<dl class="function"> +<dt id="gmt_to_local"> +<code class="descname">gmt_to_local</code><span class="sig-paren">(</span><span class="optional">[</span><em>$time = ''</em><span class="optional">[</span>, <em>$timezone = 'UTC'</em><span class="optional">[</span>, <em>$dst = FALSE</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#gmt_to_local" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$time</strong> (<em>int</em>) – UNIX timestamp</li> +<li><strong>$timezone</strong> (<em>string</em>) – Timezone</li> +<li><strong>$dst</strong> (<em>bool</em>) – Whether DST is active</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">UNIX timestamp</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">int</p> +</td> +</tr> +</tbody> +</table> +<p>Takes a UNIX timestamp (referenced to GMT) as input, and converts it to +a localized timestamp based on the timezone and Daylight Saving Time +submitted.</p> +<p>Example:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$timestamp</span> <span class="o">=</span> <span class="mi">1140153693</span><span class="p">;</span> +<span class="nv">$timezone</span> <span class="o">=</span> <span class="s1">'UM8'</span><span class="p">;</span> +<span class="nv">$daylight_saving</span> <span class="o">=</span> <span class="k">TRUE</span><span class="p">;</span> +<span class="k">echo</span> <span class="nx">gmt_to_local</span><span class="p">(</span><span class="nv">$timestamp</span><span class="p">,</span> <span class="nv">$timezone</span><span class="p">,</span> <span class="nv">$daylight_saving</span><span class="p">);</span> +</pre></div> +</div> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">For a list of timezones see the reference at the bottom of this page.</p> +</div> +</dd></dl> + +<dl class="function"> +<dt id="mysql_to_unix"> +<code class="descname">mysql_to_unix</code><span class="sig-paren">(</span><span class="optional">[</span><em>$time = ''</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#mysql_to_unix" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$time</strong> (<em>string</em>) – MySQL timestamp</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">UNIX timestamp</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">int</p> +</td> +</tr> +</tbody> +</table> +<p>Takes a MySQL Timestamp as input and returns it as a UNIX timestamp.</p> +<p>Example:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$unix</span> <span class="o">=</span> <span class="nx">mysql_to_unix</span><span class="p">(</span><span class="s1">'20061124092345'</span><span class="p">);</span> +</pre></div> +</div> +</dd></dl> + +<dl class="function"> +<dt id="unix_to_human"> +<code class="descname">unix_to_human</code><span class="sig-paren">(</span><span class="optional">[</span><em>$time = ''</em><span class="optional">[</span>, <em>$seconds = FALSE</em><span class="optional">[</span>, <em>$fmt = 'us'</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#unix_to_human" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$time</strong> (<em>int</em>) – UNIX timestamp</li> +<li><strong>$seconds</strong> (<em>bool</em>) – Whether to show seconds</li> +<li><strong>$fmt</strong> (<em>string</em>) – format (us or euro)</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Formatted date</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p> +</td> +</tr> +</tbody> +</table> +<p>Takes a UNIX timestamp as input and returns it in a human readable +format with this prototype:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nx">YYYY</span><span class="o">-</span><span class="nx">MM</span><span class="o">-</span><span class="nx">DD</span> <span class="nx">HH</span><span class="o">:</span><span class="nx">MM</span><span class="o">:</span><span class="nx">SS</span> <span class="nx">AM</span><span class="o">/</span><span class="nx">PM</span> +</pre></div> +</div> +<p>This can be useful if you need to display a date in a form field for +submission.</p> +<p>The time can be formatted with or without seconds, and it can be set to +European or US format. If only the timestamp is submitted it will return +the time without seconds formatted for the U.S.</p> +<p>Examples:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$now</span> <span class="o">=</span> <span class="nb">time</span><span class="p">();</span> +<span class="k">echo</span> <span class="nx">unix_to_human</span><span class="p">(</span><span class="nv">$now</span><span class="p">);</span> <span class="c1">// U.S. time, no seconds</span> +<span class="k">echo</span> <span class="nx">unix_to_human</span><span class="p">(</span><span class="nv">$now</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">,</span> <span class="s1">'us'</span><span class="p">);</span> <span class="c1">// U.S. time with seconds</span> +<span class="k">echo</span> <span class="nx">unix_to_human</span><span class="p">(</span><span class="nv">$now</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">,</span> <span class="s1">'eu'</span><span class="p">);</span> <span class="c1">// Euro time with seconds</span> +</pre></div> +</div> +</dd></dl> + +<dl class="function"> +<dt id="human_to_unix"> +<code class="descname">human_to_unix</code><span class="sig-paren">(</span><span class="optional">[</span><em>$datestr = ''</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#human_to_unix" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$datestr</strong> (<em>int</em>) – Date string</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">UNIX timestamp or FALSE on failure</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">int</p> +</td> +</tr> +</tbody> +</table> +<p>The opposite of the <code class="xref php php-func docutils literal"><span class="pre">unix_to_time()</span></code> function. Takes a “human” +time as input and returns it as a UNIX timestamp. This is useful if you +accept “human” formatted dates submitted via a form. Returns boolean FALSE +date string passed to it is not formatted as indicated above.</p> +<p>Example:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$now</span> <span class="o">=</span> <span class="nb">time</span><span class="p">();</span> +<span class="nv">$human</span> <span class="o">=</span> <span class="nx">unix_to_human</span><span class="p">(</span><span class="nv">$now</span><span class="p">);</span> +<span class="nv">$unix</span> <span class="o">=</span> <span class="nx">human_to_unix</span><span class="p">(</span><span class="nv">$human</span><span class="p">);</span> +</pre></div> +</div> +</dd></dl> + +<dl class="function"> +<dt id="nice_date"> +<code class="descname">nice_date</code><span class="sig-paren">(</span><span class="optional">[</span><em>$bad_date = ''</em><span class="optional">[</span>, <em>$format = FALSE</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#nice_date" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$bad_date</strong> (<em>int</em>) – The terribly formatted date-like string</li> +<li><strong>$format</strong> (<em>string</em>) – Date format to return (same as PHP’s <code class="docutils literal"><span class="pre">date()</span></code> function)</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Formatted date</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p> +</td> +</tr> +</tbody> +</table> +<p>This function can take a number poorly-formed date formats and convert +them into something useful. It also accepts well-formed dates.</p> +<p>The function will return a UNIX timestamp by default. You can, optionally, +pass a format string (the same type as the PHP <code class="docutils literal"><span class="pre">date()</span></code> function accepts) +as the second parameter.</p> +<p>Example:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$bad_date</span> <span class="o">=</span> <span class="s1">'199605'</span><span class="p">;</span> +<span class="c1">// Should Produce: 1996-05-01</span> +<span class="nv">$better_date</span> <span class="o">=</span> <span class="nx">nice_date</span><span class="p">(</span><span class="nv">$bad_date</span><span class="p">,</span> <span class="s1">'Y-m-d'</span><span class="p">);</span> + +<span class="nv">$bad_date</span> <span class="o">=</span> <span class="s1">'9-11-2001'</span><span class="p">;</span> +<span class="c1">// Should Produce: 2001-09-11</span> +<span class="nv">$better_date</span> <span class="o">=</span> <span class="nx">nice_date</span><span class="p">(</span><span class="nv">$bad_date</span><span class="p">,</span> <span class="s1">'Y-m-d'</span><span class="p">);</span> +</pre></div> +</div> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">This function is DEPRECATED. Use PHP’s native <a class="reference external" href="https://secure.php.net/datetime">DateTime class</a> instead.</p> +</div> +</dd></dl> + +<dl class="function"> +<dt id="timespan"> +<code class="descname">timespan</code><span class="sig-paren">(</span><span class="optional">[</span><em>$seconds = 1</em><span class="optional">[</span>, <em>$time = ''</em><span class="optional">[</span>, <em>$units = ''</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#timespan" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$seconds</strong> (<em>int</em>) – Number of seconds</li> +<li><strong>$time</strong> (<em>string</em>) – UNIX timestamp</li> +<li><strong>$units</strong> (<em>int</em>) – Number of time units to display</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Formatted time difference</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p> +</td> +</tr> +</tbody> +</table> +<p>Formats a UNIX timestamp so that is appears similar to this:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="mi">1</span> <span class="nx">Year</span><span class="p">,</span> <span class="mi">10</span> <span class="nx">Months</span><span class="p">,</span> <span class="mi">2</span> <span class="nx">Weeks</span><span class="p">,</span> <span class="mi">5</span> <span class="nx">Days</span><span class="p">,</span> <span class="mi">10</span> <span class="nx">Hours</span><span class="p">,</span> <span class="mi">16</span> <span class="nx">Minutes</span> +</pre></div> +</div> +<p>The first parameter must contain a UNIX timestamp. +The second parameter must contain a timestamp that is greater that the +first timestamp. +The thirdparameter is optional and limits the number of time units to display.</p> +<p>If the second parameter empty, the current time will be used.</p> +<p>The most common purpose for this function is to show how much time has +elapsed from some point in time in the past to now.</p> +<p>Example:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$post_date</span> <span class="o">=</span> <span class="s1">'1079621429'</span><span class="p">;</span> +<span class="nv">$now</span> <span class="o">=</span> <span class="nb">time</span><span class="p">();</span> +<span class="nv">$units</span> <span class="o">=</span> <span class="mi">2</span><span class="p">;</span> +<span class="k">echo</span> <span class="nx">timespan</span><span class="p">(</span><span class="nv">$post_date</span><span class="p">,</span> <span class="nv">$now</span><span class="p">,</span> <span class="nv">$units</span><span class="p">);</span> +</pre></div> +</div> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">The text generated by this function is found in the following language +file: <cite>language/<your_lang>/date_lang.php</cite></p> +</div> +</dd></dl> + +<dl class="function"> +<dt id="days_in_month"> +<code class="descname">days_in_month</code><span class="sig-paren">(</span><span class="optional">[</span><em>$month = 0</em><span class="optional">[</span>, <em>$year = ''</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#days_in_month" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$month</strong> (<em>int</em>) – a numeric month</li> +<li><strong>$year</strong> (<em>int</em>) – a numeric year</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Count of days in the specified month</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">int</p> +</td> +</tr> +</tbody> +</table> +<p>Returns the number of days in a given month/year. Takes leap years into +account.</p> +<p>Example:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">echo</span> <span class="nx">days_in_month</span><span class="p">(</span><span class="mo">06</span><span class="p">,</span> <span class="mi">2005</span><span class="p">);</span> +</pre></div> +</div> +<p>If the second parameter is empty, the current year will be used.</p> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">This function will alias the native <code class="docutils literal"><span class="pre">cal_days_in_month()</span></code>, if +it is available.</p> +</div> +</dd></dl> + +<dl class="function"> +<dt id="date_range"> +<code class="descname">date_range</code><span class="sig-paren">(</span><span class="optional">[</span><em>$unix_start = ''</em><span class="optional">[</span>, <em>$mixed = ''</em><span class="optional">[</span>, <em>$is_unix = TRUE</em><span class="optional">[</span>, <em>$format = 'Y-m-d'</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#date_range" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$unix_start</strong> (<em>int</em>) – UNIX timestamp of the range start date</li> +<li><strong>$mixed</strong> (<em>int</em>) – UNIX timestamp of the range end date or interval in days</li> +<li><strong>$is_unix</strong> (<em>bool</em>) – set to FALSE if $mixed is not a timestamp</li> +<li><strong>$format</strong> (<em>string</em>) – Output date format, same as in <code class="docutils literal"><span class="pre">date()</span></code></li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">An array of dates</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">array</p> +</td> +</tr> +</tbody> +</table> +<p>Returns a list of dates within a specified period.</p> +<p>Example:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$range</span> <span class="o">=</span> <span class="nx">date_range</span><span class="p">(</span><span class="s1">'2012-01-01'</span><span class="p">,</span> <span class="s1">'2012-01-15'</span><span class="p">);</span> +<span class="k">echo</span> <span class="s2">"First 15 days of 2012:"</span><span class="p">;</span> +<span class="k">foreach</span> <span class="p">(</span><span class="nv">$range</span> <span class="k">as</span> <span class="nv">$date</span><span class="p">)</span> +<span class="p">{</span> + <span class="k">echo</span> <span class="nv">$date</span><span class="o">.</span><span class="s2">"</span><span class="se">\n</span><span class="s2">"</span><span class="p">;</span> +<span class="p">}</span> +</pre></div> +</div> +</dd></dl> + +<dl class="function"> +<dt id="timezones"> +<code class="descname">timezones</code><span class="sig-paren">(</span><span class="optional">[</span><em>$tz = ''</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#timezones" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$tz</strong> (<em>string</em>) – A numeric timezone</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Hour difference from UTC</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">int</p> +</td> +</tr> +</tbody> +</table> +<p>Takes a timezone reference (for a list of valid timezones, see the +“Timezone Reference” below) and returns the number of hours offset from +UTC.</p> +<p>Example:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">echo</span> <span class="nx">timezones</span><span class="p">(</span><span class="s1">'UM5'</span><span class="p">);</span> +</pre></div> +</div> +<p>This function is useful when used with <a class="reference internal" href="#timezone_menu" title="timezone_menu"><code class="xref php php-func docutils literal"><span class="pre">timezone_menu()</span></code></a>.</p> +</dd></dl> + +<dl class="function"> +<dt id="timezone_menu"> +<code class="descname">timezone_menu</code><span class="sig-paren">(</span><span class="optional">[</span><em>$default = 'UTC'</em><span class="optional">[</span>, <em>$class = ''</em><span class="optional">[</span>, <em>$name = 'timezones'</em><span class="optional">[</span>, <em>$attributes = ''</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#timezone_menu" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$default</strong> (<em>string</em>) – Timezone</li> +<li><strong>$class</strong> (<em>string</em>) – Class name</li> +<li><strong>$name</strong> (<em>string</em>) – Menu name</li> +<li><strong>$attributes</strong> (<em>mixed</em>) – HTML attributes</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">HTML drop down menu with time zones</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p> +</td> +</tr> +</tbody> +</table> +<p>Generates a pull-down menu of timezones, like this one:</p> +<form action="#"> + <select name="timezones"> + <option value='UM12'>(UTC -12:00) Baker/Howland Island</option> + <option value='UM11'>(UTC -11:00) Samoa Time Zone, Niue</option> + <option value='UM10'>(UTC -10:00) Hawaii-Aleutian Standard Time, Cook Islands, Tahiti</option> + <option value='UM95'>(UTC -9:30) Marquesas Islands</option> + <option value='UM9'>(UTC -9:00) Alaska Standard Time, Gambier Islands</option> + <option value='UM8'>(UTC -8:00) Pacific Standard Time, Clipperton Island</option> + <option value='UM7'>(UTC -7:00) Mountain Standard Time</option> + <option value='UM6'>(UTC -6:00) Central Standard Time</option> + <option value='UM5'>(UTC -5:00) Eastern Standard Time, Western Caribbean Standard Time</option> + <option value='UM45'>(UTC -4:30) Venezuelan Standard Time</option> + <option value='UM4'>(UTC -4:00) Atlantic Standard Time, Eastern Caribbean Standard Time</option> + <option value='UM35'>(UTC -3:30) Newfoundland Standard Time</option> + <option value='UM3'>(UTC -3:00) Argentina, Brazil, French Guiana, Uruguay</option> + <option value='UM2'>(UTC -2:00) South Georgia/South Sandwich Islands</option> + <option value='UM1'>(UTC -1:00) Azores, Cape Verde Islands</option> + <option value='UTC' selected='selected'>(UTC) Greenwich Mean Time, Western European Time</option> + <option value='UP1'>(UTC +1:00) Central European Time, West Africa Time</option> + <option value='UP2'>(UTC +2:00) Central Africa Time, Eastern European Time, Kaliningrad Time</option> + <option value='UP3'>(UTC +3:00) Moscow Time, East Africa Time</option> + <option value='UP35'>(UTC +3:30) Iran Standard Time</option> + <option value='UP4'>(UTC +4:00) Azerbaijan Standard Time, Samara Time</option> + <option value='UP45'>(UTC +4:30) Afghanistan</option> + <option value='UP5'>(UTC +5:00) Pakistan Standard Time, Yekaterinburg Time</option> + <option value='UP55'>(UTC +5:30) Indian Standard Time, Sri Lanka Time</option> + <option value='UP575'>(UTC +5:45) Nepal Time</option> + <option value='UP6'>(UTC +6:00) Bangladesh Standard Time, Bhutan Time, Omsk Time</option> + <option value='UP65'>(UTC +6:30) Cocos Islands, Myanmar</option> + <option value='UP7'>(UTC +7:00) Krasnoyarsk Time, Cambodia, Laos, Thailand, Vietnam</option> + <option value='UP8'>(UTC +8:00) Australian Western Standard Time, Beijing Time, Irkutsk Time</option> + <option value='UP875'>(UTC +8:45) Australian Central Western Standard Time</option> + <option value='UP9'>(UTC +9:00) Japan Standard Time, Korea Standard Time, Yakutsk Time</option> + <option value='UP95'>(UTC +9:30) Australian Central Standard Time</option> + <option value='UP10'>(UTC +10:00) Australian Eastern Standard Time, Vladivostok Time</option> + <option value='UP105'>(UTC +10:30) Lord Howe Island</option> + <option value='UP11'>(UTC +11:00) Srednekolymsk Time, Solomon Islands, Vanuatu</option> + <option value='UP115'>(UTC +11:30) Norfolk Island</option> + <option value='UP12'>(UTC +12:00) Fiji, Gilbert Islands, Kamchatka Time, New Zealand Standard Time</option> + <option value='UP1275'>(UTC +12:45) Chatham Islands Standard Time</option> + <option value='UP13'>(UTC +13:00) Phoenix Islands Time, Tonga</option> + <option value='UP14'>(UTC +14:00) Line Islands</option> + </select> +</form><p>This menu is useful if you run a membership site in which your users are +allowed to set their local timezone value.</p> +<p>The first parameter lets you set the “selected” state of the menu. For +example, to set Pacific time as the default you will do this:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">echo</span> <span class="nx">timezone_menu</span><span class="p">(</span><span class="s1">'UM8'</span><span class="p">);</span> +</pre></div> +</div> +<p>Please see the timezone reference below to see the values of this menu.</p> +<p>The second parameter lets you set a CSS class name for the menu.</p> +<p>The fourth parameter lets you set one or more attributes on the generated select tag.</p> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">The text contained in the menu is found in the following +language file: <cite>language/<your_lang>/date_lang.php</cite></p> +</div> +</dd></dl> + +</div> +<div class="section" id="timezone-reference"> +<h2><a class="toc-backref" href="#id3">Timezone Reference</a><a class="headerlink" href="#timezone-reference" title="Permalink to this headline">¶</a></h2> +<p>The following table indicates each timezone and its location.</p> +<p>Note some of the location lists have been abridged for clarity and formatting.</p> +<table border="1" class="docutils"> +<colgroup> +<col width="14%" /> +<col width="86%" /> +</colgroup> +<thead valign="bottom"> +<tr class="row-odd"><th class="head">Time Zone</th> +<th class="head">Location</th> +</tr> +</thead> +<tbody valign="top"> +<tr class="row-even"><td>UM12</td> +<td>(UTC - 12:00) Baker/Howland Island</td> +</tr> +<tr class="row-odd"><td>UM11</td> +<td>(UTC - 11:00) Samoa Time Zone, Niue</td> +</tr> +<tr class="row-even"><td>UM10</td> +<td>(UTC - 10:00) Hawaii-Aleutian Standard Time, Cook Islands</td> +</tr> +<tr class="row-odd"><td>UM95</td> +<td>(UTC - 09:30) Marquesas Islands</td> +</tr> +<tr class="row-even"><td>UM9</td> +<td>(UTC - 09:00) Alaska Standard Time, Gambier Islands</td> +</tr> +<tr class="row-odd"><td>UM8</td> +<td>(UTC - 08:00) Pacific Standard Time, Clipperton Island</td> +</tr> +<tr class="row-even"><td>UM7</td> +<td>(UTC - 07:00) Mountain Standard Time</td> +</tr> +<tr class="row-odd"><td>UM6</td> +<td>(UTC - 06:00) Central Standard Time</td> +</tr> +<tr class="row-even"><td>UM5</td> +<td>(UTC - 05:00) Eastern Standard Time, Western Caribbean</td> +</tr> +<tr class="row-odd"><td>UM45</td> +<td>(UTC - 04:30) Venezuelan Standard Time</td> +</tr> +<tr class="row-even"><td>UM4</td> +<td>(UTC - 04:00) Atlantic Standard Time, Eastern Caribbean</td> +</tr> +<tr class="row-odd"><td>UM35</td> +<td>(UTC - 03:30) Newfoundland Standard Time</td> +</tr> +<tr class="row-even"><td>UM3</td> +<td>(UTC - 03:00) Argentina, Brazil, French Guiana, Uruguay</td> +</tr> +<tr class="row-odd"><td>UM2</td> +<td>(UTC - 02:00) South Georgia/South Sandwich Islands</td> +</tr> +<tr class="row-even"><td>UM1</td> +<td>(UTC -1:00) Azores, Cape Verde Islands</td> +</tr> +<tr class="row-odd"><td>UTC</td> +<td>(UTC) Greenwich Mean Time, Western European Time</td> +</tr> +<tr class="row-even"><td>UP1</td> +<td>(UTC +1:00) Central European Time, West Africa Time</td> +</tr> +<tr class="row-odd"><td>UP2</td> +<td>(UTC +2:00) Central Africa Time, Eastern European Time</td> +</tr> +<tr class="row-even"><td>UP3</td> +<td>(UTC +3:00) Moscow Time, East Africa Time</td> +</tr> +<tr class="row-odd"><td>UP35</td> +<td>(UTC +3:30) Iran Standard Time</td> +</tr> +<tr class="row-even"><td>UP4</td> +<td>(UTC +4:00) Azerbaijan Standard Time, Samara Time</td> +</tr> +<tr class="row-odd"><td>UP45</td> +<td>(UTC +4:30) Afghanistan</td> +</tr> +<tr class="row-even"><td>UP5</td> +<td>(UTC +5:00) Pakistan Standard Time, Yekaterinburg Time</td> +</tr> +<tr class="row-odd"><td>UP55</td> +<td>(UTC +5:30) Indian Standard Time, Sri Lanka Time</td> +</tr> +<tr class="row-even"><td>UP575</td> +<td>(UTC +5:45) Nepal Time</td> +</tr> +<tr class="row-odd"><td>UP6</td> +<td>(UTC +6:00) Bangladesh Standard Time, Bhutan Time, Omsk Time</td> +</tr> +<tr class="row-even"><td>UP65</td> +<td>(UTC +6:30) Cocos Islands, Myanmar</td> +</tr> +<tr class="row-odd"><td>UP7</td> +<td>(UTC +7:00) Krasnoyarsk Time, Cambodia, Laos, Thailand, Vietnam</td> +</tr> +<tr class="row-even"><td>UP8</td> +<td>(UTC +8:00) Australian Western Standard Time, Beijing Time</td> +</tr> +<tr class="row-odd"><td>UP875</td> +<td>(UTC +8:45) Australian Central Western Standard Time</td> +</tr> +<tr class="row-even"><td>UP9</td> +<td>(UTC +9:00) Japan Standard Time, Korea Standard Time, Yakutsk</td> +</tr> +<tr class="row-odd"><td>UP95</td> +<td>(UTC +9:30) Australian Central Standard Time</td> +</tr> +<tr class="row-even"><td>UP10</td> +<td>(UTC +10:00) Australian Eastern Standard Time, Vladivostok Time</td> +</tr> +<tr class="row-odd"><td>UP105</td> +<td>(UTC +10:30) Lord Howe Island</td> +</tr> +<tr class="row-even"><td>UP11</td> +<td>(UTC +11:00) Srednekolymsk Time, Solomon Islands, Vanuatu</td> +</tr> +<tr class="row-odd"><td>UP115</td> +<td>(UTC +11:30) Norfolk Island</td> +</tr> +<tr class="row-even"><td>UP12</td> +<td>(UTC +12:00) Fiji, Gilbert Islands, Kamchatka, New Zealand</td> +</tr> +<tr class="row-odd"><td>UP1275</td> +<td>(UTC +12:45) Chatham Islands Standard Time</td> +</tr> +<tr class="row-even"><td>UP13</td> +<td>(UTC +13:00) Phoenix Islands Time, Tonga</td> +</tr> +<tr class="row-odd"><td>UP14</td> +<td>(UTC +14:00) Line Islands</td> +</tr> +</tbody> +</table> +</div> +</div> + + + </div> + <footer> + + <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> + + <a href="directory_helper.html" class="btn btn-neutral float-right" title="Directory Helper">Next <span class="fa fa-arrow-circle-right"></span></a> + + + <a href="cookie_helper.html" class="btn btn-neutral" title="Cookie Helper"><span class="fa fa-arrow-circle-left"></span> Previous</a> + + </div> + + + <hr/> + + <div role="contentinfo"> + <p> + © Copyright 2014 - 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