php压缩html代码减少页面响应时间

function compress_html($string) {

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

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

    $string = str_replace(" ", '', $string); //清除制表符 

    $pattern = array(

        "/> *([^ ]*) *</", //去掉注释标记 

        "/[s]+/",

        "/<!--[^!]*-->/",

        "/" /",

        "/ "/",

        "'/*[^*]**/'"

    );

    $replace = array(

        ">\1<",

        " ",

        "",

        """,

        """,

        ""

    );

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

}

 

 

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

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

$content = ltrim(rtrim(preg_replace(array("/> *([^ ]*) *</","//","'/*[^*]**/'","/ /","/ /","/ /",'/>[ ]+</'),array(">\1<",'','','','','','><'),$content)));

$html=compress_html($content);

return $html;