wp_kses_bad_protocol_once2( string $scheme, string[] $allowed_protocols ): string

2137function wp_kses_bad_protocol_once2( $scheme, $allowed_protocols ) {2138	$scheme = wp_kses_decode_entities( $scheme );2139	$scheme = preg_replace( '/\s/', '', $scheme );2140	$scheme = wp_kses_no_null( $scheme );2141	$scheme = strtolower( $scheme );2142 2143	$allowed = array_any( (array) $allowed_protocols, fn( $protocol ) => strtolower( $protocol ) === $scheme );2144 2145	if ( $allowed ) {2146		return "$scheme:";2147	} else {2148		return '';2149	}2150}