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59 <h1>Security Helper
</h1>
61 <p>The Security Helper file contains security related functions.
</p>
64 <h2>Loading this Helper
</h2>
66 <p>This helper is loaded using the following code:
</p>
67 <code>$this-
>load-
>helper('security');
</code>
69 <p>The following functions are available:
</p>
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>
78 <h2>sanitize_filename()
</h2>
80 <p>Provides protection against directory traversal. This function is an alias to the one in the
81 <a href=
"../libraries/security.html">Security class
</a>. More info can be found there.
</p>
86 <p>Permits you to create SHA1 or MD5 one way hashes suitable for encrypting passwords. Will create SHA1 by default. Examples:
</p>
89 $str = do_hash($str); // SHA1
<br />
91 $str = do_hash($str, 'md5'); // MD5
94 <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>
98 <h2>strip_image_tags()
</h2>
100 <p>This is a security function that will strip image tags from a string. It leaves the image URL as plain text.
</p>
102 <code>$string = strip_image_tags($string);
</code>
105 <h2>encode_php_tags()
</h2>
107 <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>
109 <code>$string = encode_php_tags($string);
</code>
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