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www.giggi.me / code-igniter-v3-giggi / 8039d4c217cd0324e191f3c7887803246070a194 / . / user_guide / helpers / security_helper.html
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Derek Jonesfd93d222008-05-06 15:18:50 +0000[diff] [blame]6<title>Security Helper : CodeIgniter User Guide</title>
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45Security Helper
46</td>
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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>$this->load->helper('security');</code>
68
69<p>The following functions are available:</p>
70
71
72<h2>xss_clean()</h2>
73
admine334c472006-10-21 19:44:22 +0000[diff] [blame]74<p>Provides Cross Site Script Hack filtering. This function is an alias to the one in the
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]75<a href="../libraries/input.html">Input class</a>. More info can be found there.</p>
76
77
admin5ffcde82006-09-06 01:41:48 +0000[diff] [blame]78<h2>dohash()</h2>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]79
80<p>Permits you to create SHA1 or MD5 one way hashes suitable for encrypting passwords. Will create SHA1 by default. Examples:</p>
81
82<code>
admin5ffcde82006-09-06 01:41:48 +0000[diff] [blame]83$str = dohash($str); // SHA1<br />
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]84<br />
admin5ffcde82006-09-06 01:41:48 +0000[diff] [blame]85$str = dohash($str, 'md5'); // MD5
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]86</code>
87
88
89
90
91<h2>strip_image_tags()</h2>
92
93<p>This is a security function that will strip image tags from a string. It leaves the image URL as plain text.</p>
94
95<code>$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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