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。