Filter List Function in PHP

The filter_list() function is used to list all supported filters.

Syntax

filter_list()

Return

The filter_list() function returns an array of filters available. It returns an empty array if there are no filters.

Example

 Live Demo

<?php
   foreach (filter_list() as $id => $filter) {
      echo '<tr><td>' . $filter . '</td><td>' . filter_id($filter) . '</td></tr>';
   }
?>

Output

The following is the output.

int257
boolean258
float259
validate_regexp272
validate_domain277
validate_url273
validate_email274
validate_ip275
validate_mac276
string513
stripped513
encoded514
special_chars515
full_special_chars522
unsafe_raw516
email517
url518
number_int519
number_float520
magic_quotes521
callback1024