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| 31 | <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
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| 32 | <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>
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| 35 | <tr>
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| admin | 9fc347d | 2006-09-21 00:00:28 +0000 | [diff] [blame] | 36 | <td><h1>Code Igniter User Guide Version 1.4.1</h1></td>
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| admin | b0dd10f | 2006-08-25 17:25:49 +0000 | [diff] [blame] | 37 | <td id="breadcrumb_right"><a href="../toc.html">Full Table of Contents</a></td>
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| 38 | </tr>
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| 44 | <!-- START BREADCRUMB -->
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| 45 | <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
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| 46 | <tr>
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| 47 | <td id="breadcrumb">
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| 48 | <a href="http://www.codeigniter.com/">Code Igniter Home</a> ›
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| 49 | <a href="../index.html">User Guide Home</a> ›
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| 50 | Security Helper
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| 51 | </td>
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| 52 | <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>
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| 58 |
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| 59 |
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| 60 | <!-- START CONTENT -->
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| 61 | <div id="content">
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| 62 |
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| 63 |
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| 64 | <h1>Security Helper</h1>
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| 65 |
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| 66 | <p>The Security Helper file contains security related functions.</p>
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| 67 |
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| 68 |
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| 69 | <h2>Loading this Helper</h2>
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| 70 |
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| 71 | <p>This helper is loaded using the following code:</p>
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| 72 | <code>$this->load->helper('security');</code>
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| 73 |
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| 74 | <p>The following functions are available:</p>
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| 75 |
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| 76 |
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| 77 | <h2>xss_clean()</h2>
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| 78 |
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| 79 | <p>Provides Cross Site Script Hack filtering. This function is an alias to the the one in the
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| 80 | <a href="../libraries/input.html">Input class</a>. More info can be found there.</p>
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| 81 |
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| 82 |
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| admin | 5ffcde8 | 2006-09-06 01:41:48 +0000 | [diff] [blame] | 83 | <h2>dohash()</h2>
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| admin | b0dd10f | 2006-08-25 17:25:49 +0000 | [diff] [blame] | 84 |
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| 85 | <p>Permits you to create SHA1 or MD5 one way hashes suitable for encrypting passwords. Will create SHA1 by default. Examples:</p>
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| 86 |
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| 87 | <code>
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| admin | 5ffcde8 | 2006-09-06 01:41:48 +0000 | [diff] [blame] | 88 | $str = dohash($str); // SHA1<br />
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| admin | b0dd10f | 2006-08-25 17:25:49 +0000 | [diff] [blame] | 89 | <br />
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| admin | 5ffcde8 | 2006-09-06 01:41:48 +0000 | [diff] [blame] | 90 | $str = dohash($str, 'md5'); // MD5
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| admin | b0dd10f | 2006-08-25 17:25:49 +0000 | [diff] [blame] | 91 | </code>
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| 92 |
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| 93 |
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| 94 |
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| 95 |
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| 96 | <h2>strip_image_tags()</h2>
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| 97 |
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| 98 | <p>This is a security function that will strip image tags from a string. It leaves the image URL as plain text.</p>
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| 99 |
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| 100 | <code>$string = strip_image_tags($string);</code>
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| 101 |
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| 102 |
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| 103 | <h2>encode_php_tags()</h2>
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| 104 |
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| 105 | <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>
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| 106 |
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| 107 | <code>$string = encode_php_tags($string);</code>
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| 108 |
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| 115 | </div>
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| 116 | <!-- END CONTENT -->
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| 117 |
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| 118 |
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| 119 | <div id="footer">
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| 120 | <p>
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| 121 | Previous Topic: <a href="html_helper.html">HTML Helper</a>
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| 122 | ·
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| 123 | <a href="#top">Top of Page</a> ·
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| 124 | <a href="../index.html">User Guide Home</a> ·
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| 125 | Next Topic: <a href="string_helper.html">String Helper</a>
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