wp_kses( string $string, array[]|string $allowed_html, string[] $allowed_protocols = array() )

Filters text content and strips out disallowed HTML.


This function makes sure that only the allowed HTML element names, attribute names, attribute values, and HTML entities will occur in the given text string.

This function expects unslashed data.

See also



(string) (Required) Text content to filter.


(array[]|string) (Required) An array of allowed HTML elements and attributes, or a context name such as 'post'. See wp_kses_allowed_html() for the list of accepted context names.


(string[]) (Optional) Array of allowed URL protocols.

Default value: array()


(string) Filtered content containing only the allowed HTML.

More Information

KSES is a recursive acronym which stands for “KSES Strips Evil Scripts”.

For parameter $allowed_protocols, the default allowed protocols are http, https, ftp, mailto, news, irc, gopher, nntp, feed, and telnet. This covers all common link protocols, except for javascript, which should not be allowed for untrusted users.


File: wp-includes/kses.php

function wp_kses( $string, $allowed_html, $allowed_protocols = array() ) {
	if ( empty( $allowed_protocols ) ) {
		$allowed_protocols = wp_allowed_protocols();

	$string = wp_kses_no_null( $string, array( 'slash_zero' => 'keep' ) );
	$string = wp_kses_normalize_entities( $string );
	$string = wp_kses_hook( $string, $allowed_html, $allowed_protocols );

	return wp_kses_split( $string, $allowed_html, $allowed_protocols );


Version Description
1.0.0 Introduced.

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Licensed under the GNU GPLv2+ License.