PHP decrypts Unicode and Escape encrypted strings, unicodeescape

PHP decrypts Unicode and Escape encrypted strings, unicodeescape

This article will share with you a PHP function used to decrypt Unicode and Escape encrypted strings.

<? Php function uni_decode ($ s) {preg_match_all ('/\ # ([0-9] {}) \;/', $ 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], unico De2utf8 ($ 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 <0x200 000) {$ 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 I am a lone soul! <Br/> \ u8FD9 \ u662F \ u6D4B \ u8BD5 \ u6587 \ u672C \ uFF01 '; echo uni_decode ($ str); // Hello, everyone! This is the test text!

Search for one on the Internet. Many escape functions implemented using php are similar.

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; } 

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