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diff --git a/user_guide/libraries/trackback.html b/user_guide/libraries/trackback.html new file mode 100644 index 000000000..751d913d9 --- /dev/null +++ b/user_guide/libraries/trackback.html @@ -0,0 +1,1035 @@ + + +<!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>Trackback Class — CodeIgniter 3.1.8 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" href="../search.html"/> + <link rel="top" title="CodeIgniter 3.1.8 documentation" href="../index.html"/> + <link rel="up" title="Libraries" href="index.html"/> + <link rel="next" title="Typography Class" href="typography.html"/> + <link rel="prev" title="HTML Table Class" href="table.html"/> + + + <script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.6.2/modernizr.min.js"></script> + +</head> + +<body class="wy-body-for-nav" role="document"> + + <div id="nav"> + <div id="nav_inner"> + + + + <div id="pulldown-menu" class="ciNav"> + <ul> +<li class="toctree-l1"><a class="reference internal" href="../general/welcome.html">Welcome to CodeIgniter</a></li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../installation/index.html">Installation Instructions</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../installation/downloads.html">Downloading CodeIgniter</a></li> +<li class="toctree-l2"><a class="reference internal" 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+<li class="toctree-l2"><a class="reference internal" href="../helpers/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">Libraries</a> »</li> + + <li>Trackback Class</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="trackback-class"> +<h1>Trackback Class<a class="headerlink" href="#trackback-class" title="Permalink to this headline">¶</a></h1> +<p>The Trackback Class provides functions that enable you to send and +receive Trackback data.</p> +<p>If you are not familiar with Trackbacks you’ll find more information +<a class="reference external" href="http://en.wikipedia.org/wiki/Trackback">here</a>.</p> +<div class="contents local topic" id="contents"> +<ul class="simple"> +<li><a class="reference internal" href="#using-the-trackback-class" id="id1">Using the Trackback Class</a><ul> +<li><a class="reference internal" href="#initializing-the-class" id="id2">Initializing the Class</a></li> +<li><a class="reference internal" href="#sending-trackbacks" id="id3">Sending Trackbacks</a></li> +<li><a class="reference internal" href="#receiving-trackbacks" id="id4">Receiving Trackbacks</a></li> +<li><a class="reference internal" href="#your-ping-url" id="id5">Your Ping URL</a></li> +<li><a class="reference internal" href="#creating-a-trackback-table" id="id6">Creating a Trackback Table</a></li> +<li><a class="reference internal" href="#processing-a-trackback" id="id7">Processing a Trackback</a><ul> +<li><a class="reference internal" href="#notes" id="id8">Notes:</a></li> +</ul> +</li> +</ul> +</li> +<li><a class="reference internal" href="#class-reference" id="id9">Class Reference</a></li> +</ul> +</div> +<div class="custom-index container"></div><div class="section" id="using-the-trackback-class"> +<h2><a class="toc-backref" href="#id1">Using the Trackback Class</a><a class="headerlink" href="#using-the-trackback-class" title="Permalink to this headline">¶</a></h2> +<div class="section" id="initializing-the-class"> +<h3><a class="toc-backref" href="#id2">Initializing the Class</a><a class="headerlink" href="#initializing-the-class" title="Permalink to this headline">¶</a></h3> +<p>Like most other classes in CodeIgniter, the Trackback class is +initialized in your controller using the <code class="docutils literal"><span class="pre">$this->load->library()</span></code> method:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">library</span><span class="p">(</span><span class="s1">'trackback'</span><span class="p">);</span> +</pre></div> +</div> +<p>Once loaded, the Trackback library object will be available using:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">trackback</span> +</pre></div> +</div> +</div> +<div class="section" id="sending-trackbacks"> +<h3><a class="toc-backref" href="#id3">Sending Trackbacks</a><a class="headerlink" href="#sending-trackbacks" title="Permalink to this headline">¶</a></h3> +<p>A Trackback can be sent from any of your controller functions using code +similar to this example:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">library</span><span class="p">(</span><span class="s1">'trackback'</span><span class="p">);</span> + +<span class="nv">$tb_data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span> + <span class="s1">'ping_url'</span> <span class="o">=></span> <span class="s1">'http://example.com/trackback/456'</span><span class="p">,</span> + <span class="s1">'url'</span> <span class="o">=></span> <span class="s1">'http://www.my-example.com/blog/entry/123'</span><span class="p">,</span> + <span class="s1">'title'</span> <span class="o">=></span> <span class="s1">'The Title of My Entry'</span><span class="p">,</span> + <span class="s1">'excerpt'</span> <span class="o">=></span> <span class="s1">'The entry content.'</span><span class="p">,</span> + <span class="s1">'blog_name'</span> <span class="o">=></span> <span class="s1">'My Blog Name'</span><span class="p">,</span> + <span class="s1">'charset'</span> <span class="o">=></span> <span class="s1">'utf-8'</span> +<span class="p">);</span> + +<span class="k">if</span> <span class="p">(</span> <span class="o">!</span> <span class="nv">$this</span><span class="o">-></span><span class="na">trackback</span><span class="o">-></span><span class="na">send</span><span class="p">(</span><span class="nv">$tb_data</span><span class="p">))</span> +<span class="p">{</span> + <span class="k">echo</span> <span class="nv">$this</span><span class="o">-></span><span class="na">trackback</span><span class="o">-></span><span class="na">display_errors</span><span class="p">();</span> +<span class="p">}</span> +<span class="k">else</span> +<span class="p">{</span> + <span class="k">echo</span> <span class="s1">'Trackback was sent!'</span><span class="p">;</span> +<span class="p">}</span> +</pre></div> +</div> +<p>Description of array data:</p> +<ul class="simple"> +<li><strong>ping_url</strong> - The URL of the site you are sending the Trackback to. +You can send Trackbacks to multiple URLs by separating each URL with a comma.</li> +<li><strong>url</strong> - The URL to YOUR site where the weblog entry can be seen.</li> +<li><strong>title</strong> - The title of your weblog entry.</li> +<li><strong>excerpt</strong> - The content of your weblog entry.</li> +<li><strong>blog_name</strong> - The name of your weblog.</li> +<li><strong>charset</strong> - The character encoding your weblog is written in. If omitted, UTF-8 will be used.</li> +</ul> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">The Trackback class will automatically send only the first 500 characters of your +entry. It will also strip all HTML.</p> +</div> +<p>The Trackback sending method returns TRUE/FALSE (boolean) on success +or failure. If it fails, you can retrieve the error message using:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">trackback</span><span class="o">-></span><span class="na">display_errors</span><span class="p">();</span> +</pre></div> +</div> +</div> +<div class="section" id="receiving-trackbacks"> +<h3><a class="toc-backref" href="#id4">Receiving Trackbacks</a><a class="headerlink" href="#receiving-trackbacks" title="Permalink to this headline">¶</a></h3> +<p>Before you can receive Trackbacks you must create a weblog. If you don’t +have a blog yet there’s no point in continuing.</p> +<p>Receiving Trackbacks is a little more complex than sending them, only +because you will need a database table in which to store them, and you +will need to validate the incoming trackback data. You are encouraged to +implement a thorough validation process to guard against spam and +duplicate data. You may also want to limit the number of Trackbacks you +allow from a particular IP within a given span of time to further +curtail spam. The process of receiving a Trackback is quite simple; the +validation is what takes most of the effort.</p> +</div> +<div class="section" id="your-ping-url"> +<h3><a class="toc-backref" href="#id5">Your Ping URL</a><a class="headerlink" href="#your-ping-url" title="Permalink to this headline">¶</a></h3> +<p>In order to accept Trackbacks you must display a Trackback URL next to +each one of your weblog entries. This will be the URL that people will +use to send you Trackbacks (we will refer to this as your “Ping URL”).</p> +<p>Your Ping URL must point to a controller function where your Trackback +receiving code is located, and the URL must contain the ID number for +each particular entry, so that when the Trackback is received you’ll be +able to associate it with a particular entry.</p> +<p>For example, if your controller class is called Trackback, and the +receiving function is called receive, your Ping URLs will look something +like this:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nx">http</span><span class="o">://</span><span class="nx">example</span><span class="o">.</span><span class="nx">com</span><span class="o">/</span><span class="nx">index</span><span class="o">.</span><span class="nx">php</span><span class="o">/</span><span class="nx">trackback</span><span class="o">/</span><span class="nx">receive</span><span class="o">/</span><span class="nx">entry_id</span> +</pre></div> +</div> +<p>Where entry_id represents the individual ID number for each of your +entries.</p> +</div> +<div class="section" id="creating-a-trackback-table"> +<h3><a class="toc-backref" href="#id6">Creating a Trackback Table</a><a class="headerlink" href="#creating-a-trackback-table" title="Permalink to this headline">¶</a></h3> +<p>Before you can receive Trackbacks you must create a table in which to +store them. Here is a basic prototype for such a table:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nx">CREATE</span> <span class="nx">TABLE</span> <span class="nx">trackbacks</span> <span class="p">(</span> + <span class="nx">tb_id</span> <span class="nx">int</span><span class="p">(</span><span class="mi">10</span><span class="p">)</span> <span class="nx">unsigned</span> <span class="k">NOT</span> <span class="k">NULL</span> <span class="nx">auto_increment</span><span class="p">,</span> + <span class="nx">entry_id</span> <span class="nx">int</span><span class="p">(</span><span class="mi">10</span><span class="p">)</span> <span class="nx">unsigned</span> <span class="k">NOT</span> <span class="k">NULL</span> <span class="k">default</span> <span class="mi">0</span><span class="p">,</span> + <span class="nx">url</span> <span class="nx">varchar</span><span class="p">(</span><span class="mi">200</span><span class="p">)</span> <span class="k">NOT</span> <span class="k">NULL</span><span class="p">,</span> + <span class="nx">title</span> <span class="nx">varchar</span><span class="p">(</span><span class="mi">100</span><span class="p">)</span> <span class="k">NOT</span> <span class="k">NULL</span><span class="p">,</span> + <span class="nx">excerpt</span> <span class="nx">text</span> <span class="k">NOT</span> <span class="k">NULL</span><span class="p">,</span> + <span class="nx">blog_name</span> <span class="nx">varchar</span><span class="p">(</span><span class="mi">100</span><span class="p">)</span> <span class="k">NOT</span> <span class="k">NULL</span><span class="p">,</span> + <span class="nx">tb_date</span> <span class="nx">int</span><span class="p">(</span><span class="mi">10</span><span class="p">)</span> <span class="k">NOT</span> <span class="k">NULL</span><span class="p">,</span> + <span class="nx">ip_address</span> <span class="nx">varchar</span><span class="p">(</span><span class="mi">45</span><span class="p">)</span> <span class="k">NOT</span> <span class="k">NULL</span><span class="p">,</span> + <span class="nx">PRIMARY</span> <span class="nx">KEY</span> <span class="sb">`tb_id`</span> <span class="p">(</span><span class="sb">`tb_id`</span><span class="p">),</span> + <span class="nx">KEY</span> <span class="sb">`entry_id`</span> <span class="p">(</span><span class="sb">`entry_id`</span><span class="p">)</span> +<span class="p">);</span> +</pre></div> +</div> +<p>The Trackback specification only requires four pieces of information to +be sent in a Trackback (url, title, excerpt, blog_name), but to make +the data more useful we’ve added a few more fields in the above table +schema (date, IP address, etc.).</p> +</div> +<div class="section" id="processing-a-trackback"> +<h3><a class="toc-backref" href="#id7">Processing a Trackback</a><a class="headerlink" href="#processing-a-trackback" title="Permalink to this headline">¶</a></h3> +<p>Here is an example showing how you will receive and process a Trackback. +The following code is intended for use within the controller function +where you expect to receive Trackbacks.:</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">library</span><span class="p">(</span><span class="s1">'trackback'</span><span class="p">);</span> +<span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">database</span><span class="p">();</span> + +<span class="k">if</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-></span><span class="na">uri</span><span class="o">-></span><span class="na">segment</span><span class="p">(</span><span class="mi">3</span><span class="p">)</span> <span class="o">==</span> <span class="k">FALSE</span><span class="p">)</span> +<span class="p">{</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">trackback</span><span class="o">-></span><span class="na">send_error</span><span class="p">(</span><span class="s1">'Unable to determine the entry ID'</span><span class="p">);</span> +<span class="p">}</span> + +<span class="k">if</span> <span class="p">(</span> <span class="o">!</span> <span class="nv">$this</span><span class="o">-></span><span class="na">trackback</span><span class="o">-></span><span class="na">receive</span><span class="p">())</span> +<span class="p">{</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">trackback</span><span class="o">-></span><span class="na">send_error</span><span class="p">(</span><span class="s1">'The Trackback did not contain valid data'</span><span class="p">);</span> +<span class="p">}</span> + +<span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span> + <span class="s1">'tb_id'</span> <span class="o">=></span> <span class="s1">''</span><span class="p">,</span> + <span class="s1">'entry_id'</span> <span class="o">=></span> <span class="nv">$this</span><span class="o">-></span><span class="na">uri</span><span class="o">-></span><span class="na">segment</span><span class="p">(</span><span class="mi">3</span><span class="p">),</span> + <span class="s1">'url'</span> <span class="o">=></span> <span class="nv">$this</span><span class="o">-></span><span class="na">trackback</span><span class="o">-></span><span class="na">data</span><span class="p">(</span><span class="s1">'url'</span><span class="p">),</span> + <span class="s1">'title'</span> <span class="o">=></span> <span class="nv">$this</span><span class="o">-></span><span class="na">trackback</span><span class="o">-></span><span class="na">data</span><span class="p">(</span><span class="s1">'title'</span><span class="p">),</span> + <span class="s1">'excerpt'</span> <span class="o">=></span> <span class="nv">$this</span><span class="o">-></span><span class="na">trackback</span><span class="o">-></span><span class="na">data</span><span class="p">(</span><span class="s1">'excerpt'</span><span class="p">),</span> + <span class="s1">'blog_name'</span> <span class="o">=></span> <span class="nv">$this</span><span class="o">-></span><span class="na">trackback</span><span class="o">-></span><span class="na">data</span><span class="p">(</span><span class="s1">'blog_name'</span><span class="p">),</span> + <span class="s1">'tb_date'</span> <span class="o">=></span> <span class="nb">time</span><span class="p">(),</span> + <span class="s1">'ip_address'</span> <span class="o">=></span> <span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">ip_address</span><span class="p">()</span> +<span class="p">);</span> + +<span class="nv">$sql</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">insert_string</span><span class="p">(</span><span class="s1">'trackbacks'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span> +<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">query</span><span class="p">(</span><span class="nv">$sql</span><span class="p">);</span> + +<span class="nv">$this</span><span class="o">-></span><span class="na">trackback</span><span class="o">-></span><span class="na">send_success</span><span class="p">();</span> +</pre></div> +</div> +<div class="section" id="notes"> +<h4><a class="toc-backref" href="#id8">Notes:</a><a class="headerlink" href="#notes" title="Permalink to this headline">¶</a></h4> +<p>The entry ID number is expected in the third segment of your URL. This +is based on the URI example we gave earlier:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nx">http</span><span class="o">://</span><span class="nx">example</span><span class="o">.</span><span class="nx">com</span><span class="o">/</span><span class="nx">index</span><span class="o">.</span><span class="nx">php</span><span class="o">/</span><span class="nx">trackback</span><span class="o">/</span><span class="nx">receive</span><span class="o">/</span><span class="nx">entry_id</span> +</pre></div> +</div> +<p>Notice the entry_id is in the third URI segment, which you can retrieve +using:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">uri</span><span class="o">-></span><span class="na">segment</span><span class="p">(</span><span class="mi">3</span><span class="p">);</span> +</pre></div> +</div> +<p>In our Trackback receiving code above, if the third segment is missing, +we will issue an error. Without a valid entry ID, there’s no reason to +continue.</p> +<p>The $this->trackback->receive() function is simply a validation function +that looks at the incoming data and makes sure it contains the four +pieces of data that are required (url, title, excerpt, blog_name). It +returns TRUE on success and FALSE on failure. If it fails you will issue +an error message.</p> +<p>The incoming Trackback data can be retrieved using this function:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">trackback</span><span class="o">-></span><span class="na">data</span><span class="p">(</span><span class="s1">'item'</span><span class="p">)</span> +</pre></div> +</div> +<p>Where item represents one of these four pieces of info: url, title, +excerpt, or blog_name</p> +<p>If the Trackback data is successfully received, you will issue a success +message using:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">trackback</span><span class="o">-></span><span class="na">send_success</span><span class="p">();</span> +</pre></div> +</div> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">The above code contains no data validation, which you are +encouraged to add.</p> +</div> +</div> +</div> +</div> +<div class="section" id="class-reference"> +<h2><a class="toc-backref" href="#id9">Class Reference</a><a class="headerlink" href="#class-reference" title="Permalink to this headline">¶</a></h2> +<dl class="class"> +<dt id="CI_Trackback"> +<em class="property">class </em><code class="descname">CI_Trackback</code><a class="headerlink" href="#CI_Trackback" title="Permalink to this definition">¶</a></dt> +<dd><dl class="attribute"> +<dt> +<code class="descname">$data = array('url' => '', 'title' => '', 'excerpt' => '', 'blog_name' => '', 'charset' => '')</code></dt> +<dd><p>Trackback data array.</p> +</dd></dl> + +<dl class="attribute"> +<dt> +<code class="descname">$convert_ascii = TRUE</code></dt> +<dd><p>Whether to convert high ASCII and MS Word characters to HTML entities.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Trackback::send"> +<code class="descname">send</code><span class="sig-paren">(</span><em>$tb_data</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Trackback::send" 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>$tb_data</strong> (<em>array</em>) – Trackback data</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE on success, FALSE on failure</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p> +</td> +</tr> +</tbody> +</table> +<p>Send trackback.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Trackback::receive"> +<code class="descname">receive</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Trackback::receive" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">TRUE on success, FALSE on failure</td> +</tr> +<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">bool</td> +</tr> +</tbody> +</table> +<p>This method simply validates the incoming TB data, returning TRUE on success and FALSE on failure. +If the data is valid it is set to the <code class="docutils literal"><span class="pre">$this->data</span></code> array so that it can be inserted into a database.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Trackback::send_error"> +<code class="descname">send_error</code><span class="sig-paren">(</span><span class="optional">[</span><em>$message = 'Incomplete information'</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Trackback::send_error" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$message</strong> (<em>string</em>) – Error message</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">void</p> +</td> +</tr> +</tbody> +</table> +<p>Responses to a trackback request with an error message.</p> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">This method will terminate script execution.</p> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Trackback::send_success"> +<code class="descname">send_success</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Trackback::send_success" 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">Return type:</th><td class="field-body">void</td> +</tr> +</tbody> +</table> +<p>Responses to a trackback request with a success message.</p> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">This method will terminate script execution.</p> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Trackback::data"> +<code class="descname">data</code><span class="sig-paren">(</span><em>$item</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Trackback::data" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$item</strong> (<em>string</em>) – Data key</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Data value or empty string if not found</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>Returns a single item from the response data array.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Trackback::process"> +<code class="descname">process</code><span class="sig-paren">(</span><em>$url</em>, <em>$data</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Trackback::process" 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>$url</strong> (<em>string</em>) – Target url</li> +<li><strong>$data</strong> (<em>string</em>) – Raw POST data</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE on success, 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">bool</p> +</td> +</tr> +</tbody> +</table> +<p>Opens a socket connection and passes the data to the server, returning TRUE on success and FALSE on failure.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Trackback::extract_urls"> +<code class="descname">extract_urls</code><span class="sig-paren">(</span><em>$urls</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Trackback::extract_urls" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$urls</strong> (<em>string</em>) – Comma-separated URL list</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Array of URLs</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>This method lets multiple trackbacks to be sent. It takes a string of URLs (separated by comma or space) and puts each URL into an array.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Trackback::validate_url"> +<code class="descname">validate_url</code><span class="sig-paren">(</span><em>&$url</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Trackback::validate_url" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$url</strong> (<em>string</em>) – Trackback URL</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">void</p> +</td> +</tr> +</tbody> +</table> +<p>Simply adds the <em>http://</em> prefix it it’s not already present in the URL.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Trackback::get_id"> +<code class="descname">get_id</code><span class="sig-paren">(</span><em>$url</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Trackback::get_id" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$url</strong> (<em>string</em>) – Trackback URL</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">URL ID 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">string</p> +</td> +</tr> +</tbody> +</table> +<p>Find and return a trackback URL’s ID or FALSE on failure.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Trackback::convert_xml"> +<code class="descname">convert_xml</code><span class="sig-paren">(</span><em>$str</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Trackback::convert_xml" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$str</strong> (<em>string</em>) – Input string</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Converted string</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>Converts reserved XML characters to entities.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Trackback::limit_characters"> +<code class="descname">limit_characters</code><span class="sig-paren">(</span><em>$str</em><span class="optional">[</span>, <em>$n = 500</em><span class="optional">[</span>, <em>$end_char = '&#8230;'</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Trackback::limit_characters" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$str</strong> (<em>string</em>) – Input string</li> +<li><strong>$n</strong> (<em>int</em>) – Max characters number</li> +<li><strong>$end_char</strong> (<em>string</em>) – Character to put at end of string</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Shortened string</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>Limits the string based on the character count. Will preserve complete words.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Trackback::convert_ascii"> +<code class="descname">convert_ascii</code><span class="sig-paren">(</span><em>$str</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Trackback::convert_ascii" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$str</strong> (<em>string</em>) – Input string</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Converted string</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>Converts high ASCII text and MS Word special characterss to HTML entities.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Trackback::set_error"> +<code class="descname">set_error</code><span class="sig-paren">(</span><em>$msg</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Trackback::set_error" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$msg</strong> (<em>string</em>) – Error message</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">void</p> +</td> +</tr> +</tbody> +</table> +<p>Set an log an error message.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Trackback::display_errors"> +<code class="descname">display_errors</code><span class="sig-paren">(</span><span class="optional">[</span><em>$open = '<p>'</em><span class="optional">[</span>, <em>$close = '</p>'</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Trackback::display_errors" 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>$open</strong> (<em>string</em>) – Open tag</li> +<li><strong>$close</strong> (<em>string</em>) – Close tag</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">HTML formatted error messages</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>Returns error messages formatted in HTML or an empty string if there are no errors.</p> +</dd></dl> + +</dd></dl> + +</div> +</div> + + + </div> + <footer> + + <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> + + <a href="typography.html" class="btn btn-neutral float-right" title="Typography Class">Next <span class="fa fa-arrow-circle-right"></span></a> + + + <a href="table.html" class="btn btn-neutral" title="HTML Table Class"><span class="fa fa-arrow-circle-left"></span> Previous</a> + + </div> + + + <hr/> + + <div role="contentinfo"> + <p> + © Copyright 2014 - 2018, British Columbia Institute of Technology. + Last updated on Mar 22, 2018. + </p> + </div> + + Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. + +</footer> + </div> + </div> + + </section> + + </div> + + + + + + <script type="text/javascript"> + var DOCUMENTATION_OPTIONS = { + URL_ROOT:'../', + VERSION:'3.1.8', + COLLAPSE_INDEX:false, + FILE_SUFFIX:'.html', + HAS_SOURCE: false + }; + </script> + <script type="text/javascript" src="../_static/jquery.js"></script> + <script type="text/javascript" src="../_static/underscore.js"></script> + <script type="text/javascript" src="../_static/doctools.js"></script> + + + + + + <script type="text/javascript" src="../_static/js/theme.js"></script> + + + + + <script type="text/javascript"> + jQuery(function () { + SphinxRtdTheme.StickyNav.enable(); + }); + </script> + + +</body> +</html>
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