diff options
Diffstat (limited to 'user_guide/helpers/file_helper.html')
| -rw-r--r-- | user_guide/helpers/file_helper.html | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/user_guide/helpers/file_helper.html b/user_guide/helpers/file_helper.html deleted file mode 100644 index 3302cd048..000000000 --- a/user_guide/helpers/file_helper.html +++ /dev/null @@ -1,179 +0,0 @@ -<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> -<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> -<head> - -<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> -<title>File Helper : CodeIgniter User Guide</title> - -<style type='text/css' media='all'>@import url('../userguide.css');</style> -<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' /> - -<script type="text/javascript" src="../nav/nav.js"></script> -<script type="text/javascript" src="../nav/prototype.lite.js"></script> -<script type="text/javascript" src="../nav/moo.fx.js"></script> -<script type="text/javascript" src="../nav/user_guide_menu.js"></script> - -<meta http-equiv='expires' content='-1' /> -<meta http-equiv= 'pragma' content='no-cache' /> -<meta name='robots' content='all' /> -<meta name='author' content='ExpressionEngine Dev Team' /> -<meta name='description' content='CodeIgniter User Guide' /> -</head> -<body> - -<!-- START NAVIGATION --> -<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div> -<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div> -<div id="masthead"> -<table cellpadding="0" cellspacing="0" border="0" style="width:100%"> -<tr> -<td><h1>CodeIgniter User Guide Version 2.1.1</h1></td> -<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td> -</tr> -</table> -</div> -<!-- END NAVIGATION --> - - -<!-- START BREADCRUMB --> -<table cellpadding="0" cellspacing="0" border="0" style="width:100%"> -<tr> -<td id="breadcrumb"> -<a href="http://codeigniter.com/">CodeIgniter Home</a> › -<a href="../index.html">User Guide Home</a> › -File Helper -</td> -<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="codeigniter.com/user_guide/" />Search User Guide <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" /> <input type="submit" class="submit" name="sa" value="Go" /></form></td> -</tr> -</table> -<!-- END BREADCRUMB --> - -<br clear="all" /> - - -<!-- START CONTENT --> -<div id="content"> - - -<h1>File Helper</h1> - -<p>The File Helper file contains functions that assist in working with files.</p> - - -<h2>Loading this Helper</h2> - -<p>This helper is loaded using the following code:</p> -<code>$this->load->helper('file');</code> - -<p>The following functions are available:</p> - -<h2>read_file('<var>path</var>')</h2> - -<p>Returns the data contained in the file specified in the path. Example:</p> - -<code>$string = read_file('./path/to/file.php');</code> - -<p>The path can be a relative or full server path. Returns FALSE (boolean) on failure.</p> - -<p class="important"><strong>Note:</strong> The path is relative to your main site index.php file, NOT your controller or view files. -CodeIgniter uses a front controller so paths are always relative to the main site index.</p> - -<p>If your server is running an open_basedir restriction this function -might not work if you are trying to access a file above the calling script.</p> - -<h2>write_file('<var>path</var>', <kbd>$data</kbd>)</h2> - -<p>Writes data to the file specified in the path. If the file does not exist the function will create it. Example:</p> - -<code> -$data = 'Some file data';<br /> -<br /> -if ( ! write_file('./path/to/file.php', $data))<br /> -{<br /> - echo 'Unable to write the file';<br /> -}<br /> -else<br /> -{<br /> - echo 'File written!';<br /> -}</code> - -<p>You can optionally set the write mode via the third parameter:</p> - -<code>write_file('./path/to/file.php', $data, <var>'r+'</var>);</code> - -<p>The default mode is <kbd>wb</kbd>. Please see the <a href="http://php.net/fopen">PHP user guide</a> for mode options.</p> - -<p>Note: In order for this function to write data to a file its file permissions must be set such that it is writable (666, 777, etc.). -If the file does not already exist, the directory containing it must be writable.</p> - -<p class="important"><strong>Note:</strong> The path is relative to your main site index.php file, NOT your controller or view files. -CodeIgniter uses a front controller so paths are always relative to the main site index.</p> - -<h2>delete_files('<var>path</var>')</h2> - -<p>Deletes ALL files contained in the supplied path. Example:</p> -<code>delete_files('./path/to/directory/');</code> - -<p>If the second parameter is set to <kbd>true</kbd>, any directories contained within the supplied root path will be deleted as well. Example:</p> - -<code>delete_files('./path/to/directory/', TRUE);</code> - -<p class="important"><strong>Note:</strong> The files must be writable or owned by the system in order to be deleted.</p> - -<h2>get_filenames('<var>path/to/directory/</var>')</h2> - -<p>Takes a server path as input and returns an array containing the names of all files contained within it. The file path -can optionally be added to the file names by setting the second parameter to TRUE.</p> - -<h2>get_dir_file_info('<var>path/to/directory/</var>', <kbd>$top_level_only</kbd> = TRUE)</h2> - -<p>Reads the specified directory and builds an array containing the filenames, filesize, dates, and permissions. Sub-folders contained within the specified path are only read if forced - by sending the second parameter, <kbd>$top_level_only</kbd> to <samp>FALSE</samp>, as this can be an intensive operation.</p> - -<h2>get_file_info('<var>path/to/file</var>', <kbd>$file_information</kbd>)</h2> - -<p>Given a file and path, returns the name, path, size, date modified. Second parameter allows you to explicitly declare what information you want returned; options are: name, server_path, size, date, readable, writable, executable, fileperms. Returns FALSE if the file cannot be found.</p> - -<p class="important"><strong>Note:</strong> The "writable" uses the PHP function is_writable() which is known to have issues on the IIS webserver. Consider using fileperms instead, which returns information from PHP's fileperms() function.</p> -<h2>get_mime_by_extension('<var>file</var>')</h2> - -<p>Translates a file extension into a mime type based on config/mimes.php. Returns FALSE if it can't determine the type, or open the mime config file.</p> -<p> -<code>$file = "somefile.png";<br /> -echo $file . ' is has a mime type of ' . get_mime_by_extension($file);</code> -</p> -<p class="critical"><strong>Note:</strong> This is not an accurate way of determining file mime types, and is here strictly as a convenience. It should not be used for security.</p> - -<h2>symbolic_permissions(<kbd>$perms</kbd>)</h2> - -<p>Takes numeric permissions (such as is returned by <kbd>fileperms()</kbd> and returns standard symbolic notation of file permissions.</p> - -<code>echo symbolic_permissions(fileperms('./index.php'));<br /> -<br /> -// -rw-r--r--</code> - -<h2>octal_permissions(<kbd>$perms</kbd>)</h2> - -<p>Takes numeric permissions (such as is returned by <kbd>fileperms()</kbd> and returns a three character octal notation of file permissions.</p> - -<code>echo octal_permissions(fileperms('./index.php'));<br /> -<br /> -// 644</code> - -</div> - -<!-- END CONTENT --> - - -<div id="footer"> -<p> -Previous Topic: <a href="email_helper.html">Email Helper</a> - · -<a href="#top">Top of Page</a> · -<a href="../index.html">User Guide Home</a> · -Next Topic: <a href="form_helper.html">Form Helper</a></p> -<p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006 - 2012 · <a href="http://ellislab.com/">EllisLab, Inc.</a></p> -</div> - -</body> -</html>
\ No newline at end of file |