blob: c6b049b2774a3f74b6d1f86e877bac6f75ea34af (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>Code Igniter 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="../scripts/nav.js"></script>
<script type="text/javascript" src="../scripts/prototype.lite.js"></script>
<script type="text/javascript" src="../scripts/moo.fx.js"></script>
<script type="text/javascript">
window.onload = function() {
myHeight = new fx.Height('nav', {duration: 400});
myHeight.hide();
}
</script>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv='expires' content='-1' />
<meta http-equiv= 'pragma' content='no-cache' />
<meta name='robots' content='all' />
<meta name='author' content='Rick Ellis' />
<meta name='description' content='Code Igniter 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.jpg" width="153" height="44" 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>Code Igniter User Guide Version 1.4.0</h1></td>
<td id="breadcrumb_right"><a href="../toc.html">Full Table of Contents</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://www.codeigniter.com/">Code Igniter 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="www.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.
Code Igniter uses a front controller so paths are always relative to the main site index.</p>
<p>If you 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>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.
Code Igniter 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>
</div>
<!-- END CONTENT -->
<div id="footer">
<p>
Previous Topic: <a href="directory_helper.html">Directory 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://www.codeigniter.com">Code Igniter</a> · Copyright © 2006 · <a href="http://www.pmachine.com">pMachine, Inc.</a></p>
</div>
</body>
</html>
|
