Remove query strings from static resources like CSS & JS files.

remove-query-strings

	/**
	Remove query strings from static resources like CSS & JS files. This plugin will improve your scores in services like PageSpeed, YSlow, Pingdoom and GTmetrix.
	 */

	function _remove_query_strings_1( $src ){
		$rqs = explode( '?ver', $src );
		return $rqs[0];
	}

	function _remove_query_strings_2( $src ){
		$rqs = explode( '&ver', $src );
		return $rqs[0];
	}

	add_filter( 'script_loader_src', '_remove_query_strings_1', 15, 1 );
	add_filter( 'style_loader_src', '_remove_query_strings_1', 15, 1 );
	add_filter( 'script_loader_src', '_remove_query_strings_2', 15, 1 );
	add_filter( 'style_loader_src', '_remove_query_strings_2', 15, 1 );