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admin10c3f412006-10-08 07:21:12 +0000[diff] [blame]36<td><h1>Code Igniter User Guide Version 1.5.0b1</h1></td>
admin0a697342006-10-11 19:40:55 +0000[diff] [blame]37<td id="breadcrumb_right"><a href="../toc.html">Linear Table of Contents</a></td>
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48<a href="http://www.codeigniter.com/">Code Igniter Home</a> &nbsp;&#8250;&nbsp;
49<a href="../index.html">User Guide Home</a> &nbsp;&#8250;&nbsp;
50File Helper
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62
63
64<h1>File Helper</h1>
65
66<p>The File Helper file contains functions that assist in working with files.</p>
67
68
69<h2>Loading this Helper</h2>
70
71<p>This helper is loaded using the following code:</p>
72<code>$this->load->helper('file');</code>
73
74<p>The following functions are available:</p>
75
76<h2>read_file('<var>path</var>')</h2>
77
78<p>Returns the data contained in the file specified in the path. Example:</p>
79
80<code>$string = read_file('./path/to/file.php');</code>
81
82<p>The path can be a relative or full server path. Returns FALSE (boolean) on failure.</p>
83
84<p class="important"><strong>Note:</strong> The path is relative to your main site index.php file, NOT your controller or view files.
85Code Igniter uses a front controller so paths are always relative to the main site index.</p>
86
87<p>If you server is running an open_basedir restriction this function
88might not work if you are trying to access a file above the calling script.</p>
89
90<h2>write_file('<var>path</var>', <kbd>$data</kbd>)</h2>
91
92<p>Writes data to the file specified in the path. If the file does not exist the function will create it. Example:</p>
93
94<code>
95$data = 'Some file data';<br />
96<br />
97if ( ! write_file('./path/to/file.php', $data))<br />
98{<br />
99&nbsp;&nbsp;&nbsp;&nbsp; echo 'Unable to write the file';<br />
100}<br />
101else<br />
102{<br />
103&nbsp;&nbsp;&nbsp;&nbsp; echo 'File written!';<br />
104}</code>
105
adminb64b0be2006-09-02 17:19:54 +0000[diff] [blame]106<p>You can optionally set the write mode via the third parameter:
107
108<code>write_file('./path/to/file.php', $data, <var>'r+'</var>);</code>
109
110<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>
111
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]112<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.).
113If the file does not already exist, the directory containing it must be writable.</p>
114
115<p class="important"><strong>Note:</strong> The path is relative to your main site index.php file, NOT your controller or view files.
116Code Igniter uses a front controller so paths are always relative to the main site index.</p>
117
118
119
120<h2>delete_files('<var>path</var>')</h2>
121
122<p>Deletes ALL files contained in the supplied path. Example:</p>
123<code>delete_files('/path/to/directory/');</code>
124
125<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>
126
127<code>delete_files('/path/to/directory/', TRUE);</code>
128
129<p class="important"><strong>Note:</strong> The files must be writable or owned by the system in order to be deleted.</p>
130
131
132
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