Урок - Security Helper

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CodeIgniter® 2.2

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The Security Helper file contains security related functions.

 

Loading this Helper

 

This helper is loaded using the following code:

$this->load->helper('security');

The following functions are available:

 

xss_clean()

 

Provides Cross Site Script Hack filtering. This function is an alias to the one in the Input class. More info can be found there.

 

sanitize_filename()

 

Provides protection against directory traversal. This function is an alias to the one in the Security class. More info can be found there.

 

do_hash()

 

Permits you to create SHA1 or MD5 one way hashes suitable for encrypting passwords. Will create SHA1 by default. Examples:

$str = do_hash($str); // SHA1

$str = do_hash($str, 'md5'); // MD5

Note: This function was formerly named dohash(), which has been deprecated in favour of do_hash().

 

strip_image_tags()

 

This is a security function that will strip image tags from a string. It leaves the image URL as plain text.

$string = strip_image_tags($string);

encode_php_tags()

 

This is a security function that converts PHP tags to entities. Note: If you use the XSS filtering function it does this automatically.

$string = encode_php_tags($string);