wp_targeted_link_rel_callback()
Callback to add rel="noopener" string to HTML A element.
Will not duplicate an existing 'noopener' value to avoid invalidating the HTML.
Hooks from the function
Return
String
. HTML A Element with rel="noopener" in addition to any existing values.
Usage
wp_targeted_link_rel_callback( $matches );
- $matches(array) (required)
- Single match.
Changelog
Since 5.1.0 | Introduced. |
Since 5.6.0 | Removed 'noreferrer' relationship. |
wp_targeted_link_rel_callback() wp targeted link rel callback code WP 6.4.3
function wp_targeted_link_rel_callback( $matches ) { $link_html = $matches[1]; $original_link_html = $link_html; // Consider the HTML escaped if there are no unescaped quotes. $is_escaped = ! preg_match( '/(^|[^\\\\])[\'"]/', $link_html ); if ( $is_escaped ) { // Replace only the quotes so that they are parsable by wp_kses_hair(), leave the rest as is. $link_html = preg_replace( '/\\\\([\'"])/', '$1', $link_html ); } $atts = wp_kses_hair( $link_html, wp_allowed_protocols() ); /** * Filters the rel values that are added to links with `target` attribute. * * @since 5.1.0 * * @param string $rel The rel values. * @param string $link_html The matched content of the link tag including all HTML attributes. */ $rel = apply_filters( 'wp_targeted_link_rel', 'noopener', $link_html ); // Return early if no rel values to be added or if no actual target attribute. if ( ! $rel || ! isset( $atts['target'] ) ) { return "<a $original_link_html>"; } if ( isset( $atts['rel'] ) ) { $all_parts = preg_split( '/\s/', "{$atts['rel']['value']} $rel", -1, PREG_SPLIT_NO_EMPTY ); $rel = implode( ' ', array_unique( $all_parts ) ); } $atts['rel']['whole'] = 'rel="' . esc_attr( $rel ) . '"'; $link_html = implode( ' ', array_column( $atts, 'whole' ) ); if ( $is_escaped ) { $link_html = preg_replace( '/[\'"]/', '\\\\$0', $link_html ); } return "<a $link_html>"; }