這篇文章主要介紹了php自定義函數(shù)實(shí)現(xiàn)JS的escape的方法,結(jié)合完整實(shí)例形式分析了php實(shí)現(xiàn)JS的escape功能函數(shù)的相關(guān)技巧,具有一定參考借鑒價值,需要的朋友可以參考下

//php function

function escape($string) {

    $n = $bn = $tn = 0;

    $output = '';

    $special = "-_.+@/*0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";

    while($n < strlen($string)) {

        $ascii = ord($string[$n]);

        if($ascii == 9 || $ascii == 10 || (32 <= $ascii && $ascii <= 126)) {

            $tn = 1;$n++;

        } elseif(194 <= $ascii && $ascii <= 223) {

            $tn = 2;$n += 2;

        } elseif(224 <= $ascii && $ascii <= 239) {

            $tn = 3;$n += 3;

        } elseif(240 <= $ascii && $ascii <= 247) {

            $tn = 4;$n += 4;

        } elseif(248 <= $ascii && $ascii <= 251) {

            $tn = 5;$n += 5;

        } elseif($ascii == 252 || $ascii == 253) {

            $tn = 6;$n += 6;

        } else {

            $n++;

        }

        $singleStr = substr($string,$bn,$tn);

        $charVal = bin2hex(iconv('utf-8', 'ucs-2', $singleStr));

        if(base_convert($charVal, 16, 10) > 0xff) {

           if (!preg_match("/win/i", PHP_OS))

            $charVal = substr($charVal, 2, 2).substr($charVal, 0, 2);

          $output .= '%u' . $charVal;

        }

        else {

            if(false !== strpos($special, $singleStr))

               $output .= $singleStr;

            else

               $output .="%" . dechex(ord($string[$bn]));

        }

     $bn = $n;

    }

    return $output;

}

希望本文所述對大家PHP程序設(shè)計有所幫助。