排队插件脚本

Question

我想让插件功能中的analytics.js脚本入队

function ces_filter_wp_head_output($output) {
	if(file_exists(UPLOAD_BASE_DIR.'/cached-scripts/analytics.js')){
		$output = preg_replace('#(http:|https:|)//www.google-analytics.com/analytics.js#',UPLOAD_BASE_URL.'/cached-scripts/analytics.js',$output);
	}
	if(file_exists(UPLOAD_BASE_DIR.'/cached-scripts/ga.js')){
		$output = str_replace("ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';","ga.src = '".UPLOAD_BASE_URL."/cached-scripts/ga.js';",$output);
	}
	if(file_exists(UPLOAD_BASE_DIR.'/cached-scripts/gtag.js')){
		$output = str_replace("src=\"https://www.googletagmanager.com/gtag/js","id=\"cached-script\" src=\"".UPLOAD_BASE_URL."/cached-scripts/gtag.js",$output);
	}
    return $output;
}