Security Helper

The Security Helper file contains security related functions.

• Loading this Helper
• Available Functions

Loading this Helper

This helper is loaded using the following code:

helper('security');

Available Functions

The following functions are available:

sanitize_filename($filename)

Parameters:	$filename (string) – Filename
Returns:	Sanitized file name
Return type:	string

Provides protection against directory traversal.

This function is an alias for \CodeIgniter\Security::sanitizeFilename(). For more info, please see the Security Library documentation.

strip_image_tags($str)

Parameters:	$str (string) – Input string
Returns:	The input string with no image tags
Return type:	string

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

Example:

$string = strip_image_tags($string);

encode_php_tags($str)

Parameters:	$str (string) – Input string
Returns:	Safely formatted string
Return type:	string

This is a security function that converts PHP tags to entities.

Example:

$string = encode_php_tags($string);