Callback to add a rel attribute to HTML A element.
Description
Will remove already existing string before adding to prevent invalidating (X)HTML.
Parameters
$matches
arrayrequired- Single match.
$rel
stringrequired- The rel attribute to add.
Source
function wp_rel_callback( $matches, $rel ) {
$text = $matches[1];
$atts = wp_kses_hair( $matches[1], wp_allowed_protocols() );
if ( ! empty( $atts['href'] ) && wp_is_internal_link( $atts['href']['value'] ) ) {
$rel = trim( str_replace( 'nofollow', '', $rel ) );
}
if ( ! empty( $atts['rel'] ) ) {
$parts = array_map( 'trim', explode( ' ', $atts['rel']['value'] ) );
$rel_array = array_map( 'trim', explode( ' ', $rel ) );
$parts = array_unique( array_merge( $parts, $rel_array ) );
$rel = implode( ' ', $parts );
unset( $atts['rel'] );
$html = '';
foreach ( $atts as $name => $value ) {
if ( isset( $value['vless'] ) && 'y' === $value['vless'] ) {
$html .= $name . ' ';
} else {
$html .= "{$name}=\"" . esc_attr( $value['value'] ) . '" ';
}
}
$text = trim( $html );
}
$rel_attr = $rel ? ' rel="' . esc_attr( $rel ) . '"' : '';
return "<a {$text}{$rel_attr}>";
}
Changelog
Version | Description |
---|---|
5.3.0 | Introduced. |
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