php压缩html代码减少页面响应时间

function compress_html($string) {

    $string = str_replace("\r\n", '', $string); //清除换行符 

    $string = str_replace("\n", '', $string); //清除换行符 

    $string = str_replace("\t", '', $string); //清除制表符 

    $pattern = array(

        "/> *([^ ]*) *</", //去掉注释标记 

        "/[\s]+/",

        "/<!--[^!]*-->/",

        "/\" /",

        "/ \"/",

        "'/\*[^*]*\*/'"

    );

    $replace = array(

        ">\\1<",

        " ",

        "",

        "\"",

        "\"",

        ""

    );

    return preg_replace($pattern, $replace, $string);

}

 

 

$content = preg_replace("~>\s+<~","><",preg_replace("~>\s+\r\n~",">",$html));//保留js

$content=preg_replace('#<!--[^\!\[]*?(?<!\/\/)-->#' , '' , $content);//去掉代码中注释

$content = ltrim(rtrim(preg_replace(array("/> *([^ ]*) *</","//","'/\*[^*]*\*/'","/\r\n/","/\n/","/\t/",'/>[ ]+</'),array(">\\1<",'','','','','','><'),$content)));

$html=compress_html($content);

return $html;