---

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::sanitize_filename(). For more info, please see theSecurity Librarydocumentation.

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);