Security Helper
+ +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);
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