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132 lines
4.5 KiB
132 lines
4.5 KiB
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<td><h1>CodeIgniter User Guide Version 2.1.3</h1></td> |
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<a href="http://codeigniter.com/">CodeIgniter Home</a> › |
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<a href="../index.html">User Guide Home</a> › |
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Security Helper |
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<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="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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<h1>Security Helper</h1> |
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<p>The Security Helper file contains security related functions.</p> |
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<h2>Loading this Helper</h2> |
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<p>This helper is loaded using the following code:</p> |
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<code>$this->load->helper('security');</code> |
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<p>The following functions are available:</p> |
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<h2>xss_clean()</h2> |
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<p>Provides Cross Site Script Hack filtering. This function is an alias to the one in the |
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<a href="../libraries/input.html">Input class</a>. More info can be found there.</p> |
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<h2>sanitize_filename()</h2> |
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<p>Provides protection against directory traversal. This function is an alias to the one in the |
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<a href="../libraries/security.html">Security class</a>. More info can be found there.</p> |
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<h2>do_hash()</h2> |
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<p>Permits you to create SHA1 or MD5 one way hashes suitable for encrypting passwords. Will create SHA1 by default. Examples:</p> |
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<code> |
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$str = do_hash($str); // SHA1<br /> |
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<br /> |
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$str = do_hash($str, 'md5'); // MD5 |
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</code> |
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<p class="important"><strong>Note:</strong> This function was formerly named <kbd>dohash()</kbd>, which has been deprecated in favour of <kbd>do_hash()</kbd>.</p> |
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<h2>strip_image_tags()</h2> |
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<p>This is a security function that will strip image tags from a string. It leaves the image URL as plain text.</p> |
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<code>$string = strip_image_tags($string);</code> |
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<h2>encode_php_tags()</h2> |
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<p>This is a security function that converts PHP tags to entities. Note: If you use the XSS filtering function it does this automatically.</p> |
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<code>$string = encode_php_tags($string);</code> |
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<p> |
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Previous Topic: <a href="path_helper.html"> Path Helper</a> |
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· |
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<a href="#top">Top of Page</a> · |
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<a href="../index.html">User Guide Home</a> · |
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Next Topic: <a href="smiley_helper.html">Smiley Helper</a></p> |
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<p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006 - 2012 · <a href="http://ellislab.com/">EllisLab, Inc.</a></p> |
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