这篇文章主要介绍了php自定义函数实现JS的escape的方法,结合完整实例形式分析了php实现JS的escape功能函数的相关技巧,具有一定参考借鉴价值,需要的朋友可以参考下

//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;

}

希望本文所述对大家PHP程序设计有所帮助。