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Derek Jones733310d2009-02-11 01:13:43 +0000[diff] [blame]31<td><h1>CodeIgniter User Guide Version 1.7.1</h1></td>
Derek Allard2067d1a2008-11-13 22:59:24 +0000[diff] [blame]32<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
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43<a href="http://codeigniter.com/">CodeIgniter Home</a> &nbsp;&#8250;&nbsp;
44<a href="../index.html">User Guide Home</a> &nbsp;&#8250;&nbsp;
45Security Helper
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57
58
59<h1>Security Helper</h1>
60
61<p>The Security Helper file contains security related functions.</p>
62
63
64<h2>Loading this Helper</h2>
65
66<p>This helper is loaded using the following code:</p>
67<code>$this->load->helper('security');</code>
68
69<p>The following functions are available:</p>
70
71
72<h2>xss_clean()</h2>
73
74<p>Provides Cross Site Script Hack filtering. This function is an alias to the one in the
75<a href="../libraries/input.html">Input class</a>. More info can be found there.</p>
76
77
78<h2>dohash()</h2>
79
80<p>Permits you to create SHA1 or MD5 one way hashes suitable for encrypting passwords. Will create SHA1 by default. Examples:</p>
81
82<code>
83$str = dohash($str); // SHA1<br />
84<br />
85$str = dohash($str, 'md5'); // MD5
86</code>
87
88
89
90
91<h2>strip_image_tags()</h2>
92
93<p>This is a security function that will strip image tags from a string. It leaves the image URL as plain text.</p>
94
95<code>$string = strip_image_tags($string);</code>
96
97
98<h2>encode_php_tags()</h2>
99
100<p>This is a security function that converts PHP tags to entities. Note: If you use the XSS filtering function it does this automatically.</p>
101
102<code>$string = encode_php_tags($string);</code>
103
104
105
106
107
108
109
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116Previous Topic:&nbsp;&nbsp;<a href="path_helper.html"> Path Helper</a>
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120Next Topic:&nbsp;&nbsp;<a href="smiley_helper.html">Smiley Helper</a></p>
Derek Jonesfc395a12009-04-22 14:15:09 +0000[diff] [blame]121<p><a href="http://codeigniter.com">CodeIgniter</a> &nbsp;&middot;&nbsp; Copyright &#169; 2006-2009 &nbsp;&middot;&nbsp; <a href="http://ellislab.com/">Ellislab, Inc.</a></p>
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