PHP解密Unicode及Escape加密字符串

本文给大家分享一个PHP解密Unicode及Escape加密字符串函数

<?php  function uni_decode($s) {    preg_match_all("/&#([0-9]{2,5});/", $s, $html_uni);    preg_match_all("/[\\%]u([0-9a-f]{4})/ie", $s, $js_uni);    $source = array_merge($html_uni[0], $js_uni[0]);    $js = array();    for($i=0;$i<count($js_uni[1]);$i++) {      $js[] = hexdec($js_uni[1][$i]);    }    $utf8 = array_merge($html_uni[1], $js);    $code = $s;    for($j=0;$j<count($utf8);$j++) {      $code = str_replace($source[$j], unicode2utf8($utf8[$j]), $code);    }    return $code;//$s;//preg_replace("/\u([0-9a-f]{4})/ie", "chr(hexdec("\1"))", $s);  }    function unicode2utf8($c) {    $str="";    if ($c < 0x80) {       $str.=chr($c);    } else if ($c < 0x800) {       $str.=chr(0xc0 | $c>>6);       $str.=chr(0x80 | $c & 0x3f);    } else if ($c < 0x10000) {       $str.=chr(0xe0 | $c>>12);       $str.=chr(0x80 | $c>>6 & 0x3f);       $str.=chr(0x80 | $c & 0x3f);    } else if ($c < 0x200000) {       $str.=chr(0xf0 | $c>>18);       $str.=chr(0x80 | $c>>12 & 0x3f);       $str.=chr(0x80 | $c>>6 & 0x3f);       $str.=chr(0x80 | $c & 0x3f);    }    return $str;  }    $str="%u5927%u5BB6%u597D%uFF0C我是孤魂！<br />u8FD9u662Fu6D4Bu8BD5u6587u672CuFF01";  echo uni_decode($str); // 大家好，我是孤魂！这是测试文本！  

在网上搜索一把，很多用php实现的escape函数，大同小异

function phpescape($str){   preg_match_all("/[x80-xff].|[x01-x7f]+/",$str,$newstr);   $ar = $newstr[0];   foreach($ar as $k=>$v){     if(ord($ar[$k])>=127){       $tmpString=bin2hex(iconv("GBK","ucs-2",$v));       if (!eregi("WIN",PHP_OS)){         $tmpString = substr($tmpString,2,2).substr($tmpString,0,2);       }       $reString.="%u".$tmpString;     } else {       $reString.= rawurlencode($v);     }   }   return $reString; } 

以上所述就是本文的全部内容了，希望大家能够喜欢。