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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> |
| <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 |
| <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 |
| <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> |
| $str = do_hash($str); // SHA1<br /> |
| <br /> |
| $str = do_hash($str, 'md5'); // MD5 |
| </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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