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wp_rel_nofollow( string $text )

Adds rel="nofollow" string to all HTML A elements in content.

Parameters

$text: (string) (Required) Content that may contain HTML A elements.

Return

(string) Converted content.

Source

File: wp-includes/formatting.php

function wp_rel_nofollow( $text ) {
	// This is a pre-save filter, so text is already escaped.
	$text = stripslashes( $text );
	$text = preg_replace_callback(
		'|<a (.+?)>|i',
		function( $matches ) {
			return wp_rel_callback( $matches, 'nofollow' );
		},
		$text
	);
	return wp_slash( $text );
}

Uses

Uses	Description
wp-includes/formatting.php: wp_rel_callback()	Callback to add a rel attribute to HTML A element.
wp-includes/formatting.php: wp_slash()	Add slashes to a string or array of strings, in a recursive manner.

Changelog

Version	Description
1.5.0	Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/wp_rel_nofollow