PHP filter_list() Function

❮ PHP Filter Reference

Example

List all supported filter names:

<?php
print_r(filter_list());
?>

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Definition and Usage

The filter_list() function returns a list of all the supported filter names.

Syntax

filter_list()

Technical Details

Return Value:	An array of all supported filter names, an empty array if there are no filter names
PHP Version:	5.2+

More Examples

Example

Here, the filter_id() and the filter_list() functions are used to list the ID and filter name of all filters:

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

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❮ PHP Filter Reference