PHP实现JS颜文字加密解密过程-aaencode

调试某网站JS时出现了一堆萌萌哒的代码，且能执行成功，对此感到好奇进行研究并实现了PHP端的编码解码过程。

例如，如下代码在浏览器控制台执行后会输出一段文本。

ﾟωﾟﾉ= /｀ｍ´）ﾉ ~┻━┻ //*´∇｀*/ ['_']; o=(ﾟｰﾟ) =_=3; c=(ﾟΘﾟ) =(ﾟｰﾟ)-(ﾟｰﾟ); (ﾟДﾟ) =(ﾟΘﾟ)= (o^_^o)/ (o^_^o);(ﾟДﾟ)={ﾟΘﾟ: '_' ,ﾟωﾟﾉ : ((ﾟωﾟﾉ==3) +'_') [ﾟΘﾟ] ,ﾟｰﾟﾉ :(ﾟωﾟﾉ+ '_')[o^_^o -(ﾟΘﾟ)] ,ﾟДﾟﾉ:((ﾟｰﾟ==3) +'_')[ﾟｰﾟ] }; (ﾟДﾟ) [ﾟΘﾟ] =((ﾟωﾟﾉ==3) +'_') [c^_^o];(ﾟДﾟ) ['c'] = ((ﾟДﾟ)+'_') [ (ﾟｰﾟ)+(ﾟｰﾟ)-(ﾟΘﾟ) ];(ﾟДﾟ) ['o'] = ((ﾟДﾟ)+'_') [ﾟΘﾟ];(ﾟoﾟ)=(ﾟДﾟ) ['c']+(ﾟДﾟ) ['o']+(ﾟωﾟﾉ +'_')[ﾟΘﾟ]+ ((ﾟωﾟﾉ==3) +'_') [ﾟｰﾟ] + ((ﾟДﾟ) +'_') [(ﾟｰﾟ)+(ﾟｰﾟ)]+ ((ﾟｰﾟ==3) +'_') [ﾟΘﾟ]+((ﾟｰﾟ==3) +'_') [(ﾟｰﾟ) - (ﾟΘﾟ)]+(ﾟДﾟ) ['c']+((ﾟДﾟ)+'_') [(ﾟｰﾟ)+(ﾟｰﾟ)]+ (ﾟДﾟ) ['o']+((ﾟｰﾟ==3) +'_') [ﾟΘﾟ];(ﾟДﾟ) ['_'] =(o^_^o) [ﾟoﾟ] [ﾟoﾟ];(ﾟεﾟ)=((ﾟｰﾟ==3) +'_') [ﾟΘﾟ]+ (ﾟДﾟ) .ﾟДﾟﾉ+((ﾟДﾟ)+'_') [(ﾟｰﾟ) + (ﾟｰﾟ)]+((ﾟｰﾟ==3) +'_') [o^_^o -ﾟΘﾟ]+((ﾟｰﾟ==3) +'_') [ﾟΘﾟ]+ (ﾟωﾟﾉ +'_') [ﾟΘﾟ]; (ﾟｰﾟ)+=(ﾟΘﾟ); (ﾟДﾟ)[ﾟεﾟ]='\\'; (ﾟДﾟ).ﾟΘﾟﾉ=(ﾟДﾟ+ ﾟｰﾟ)[o^_^o -(ﾟΘﾟ)];(oﾟｰﾟo)=(ﾟωﾟﾉ +'_')[c^_^o];(ﾟДﾟ) [ﾟoﾟ]='\"';(ﾟДﾟ) ['_'] ( (ﾟДﾟ) ['_'] (ﾟεﾟ+(ﾟДﾟ)[ﾟoﾟ]+ (ﾟДﾟ)[ﾟεﾟ]+(ﾟΘﾟ)+ (ﾟｰﾟ)+ (o^_^o)+ (ﾟДﾟ)[ﾟεﾟ]+(ﾟΘﾟ)+ ((ﾟｰﾟ) + (ﾟΘﾟ))+ ((ﾟｰﾟ) + (o^_^o))+ (ﾟДﾟ)[ﾟεﾟ]+(ﾟΘﾟ)+ ((ﾟｰﾟ) + (ﾟΘﾟ))+ ((o^_^o) +(o^_^o))+ (ﾟДﾟ)[ﾟεﾟ]+(ﾟΘﾟ)+ ((o^_^o) +(o^_^o))+ (o^_^o)+ (ﾟДﾟ)[ﾟεﾟ]+(ﾟΘﾟ)+ ((ﾟｰﾟ) + (ﾟΘﾟ))+ ((ﾟｰﾟ) + (o^_^o))+ (ﾟДﾟ)[ﾟεﾟ]+(ﾟΘﾟ)+ ((ﾟｰﾟ) + (ﾟΘﾟ))+ (ﾟｰﾟ)+ (ﾟДﾟ)[ﾟεﾟ]+(ﾟΘﾟ)+ (ﾟｰﾟ)+ ((ﾟｰﾟ) + (ﾟΘﾟ))+ (ﾟДﾟ)[ﾟεﾟ]+((ﾟｰﾟ) + (ﾟΘﾟ))+ ((o^_^o) +(o^_^o))+ (ﾟДﾟ)[ﾟεﾟ]+(ﾟΘﾟ)+ ((ﾟｰﾟ) + (ﾟΘﾟ))+ (ﾟｰﾟ)+ (ﾟДﾟ)[ﾟεﾟ]+(ﾟΘﾟ)+ ((ﾟｰﾟ) + (ﾟΘﾟ))+ ((ﾟｰﾟ) + (o^_^o))+ (ﾟДﾟ)[ﾟεﾟ]+(ﾟΘﾟ)+ (ﾟｰﾟ)+ ((ﾟｰﾟ) + (o^_^o))+ (ﾟДﾟ)[ﾟεﾟ]+((ﾟｰﾟ) + (ﾟΘﾟ))+ (c^_^o)+ (ﾟДﾟ)[ﾟεﾟ]+(ﾟｰﾟ)+ ((o^_^o) - (ﾟΘﾟ))+ (ﾟДﾟ)[ﾟεﾟ]+(oﾟｰﾟo)+ ((ﾟｰﾟ) + (ﾟΘﾟ))+ ((ﾟｰﾟ) + (ﾟΘﾟ))+ (ﾟΘﾟ)+ (c^_^o)+ (ﾟДﾟ)[ﾟεﾟ]+(oﾟｰﾟo)+ ((ﾟｰﾟ) + (ﾟΘﾟ))+ (ﾟДﾟ) .ﾟΘﾟﾉ+ ((ﾟｰﾟ) + (ﾟｰﾟ))+ (ﾟДﾟ) .ﾟΘﾟﾉ+ (ﾟДﾟ)[ﾟεﾟ]+(oﾟｰﾟo)+ ((ﾟｰﾟ) + (ﾟΘﾟ))+ (ﾟΘﾟ)+ (ﾟｰﾟ)+ (o^_^o)+ (ﾟДﾟ)[ﾟεﾟ]+(oﾟｰﾟo)+ ((o^_^o) +(o^_^o))+ ((o^_^o) +(o^_^o))+ (c^_^o)+ (ﾟДﾟ) .ﾟДﾟﾉ+ (ﾟДﾟ)[ﾟεﾟ]+(oﾟｰﾟo)+ ((o^_^o) +(o^_^o))+ (ﾟДﾟ) .ﾟДﾟﾉ+ (c^_^o)+ ((ﾟｰﾟ) + (ﾟΘﾟ))+ (ﾟДﾟ)[ﾟεﾟ]+(ﾟｰﾟ)+ ((o^_^o) - (ﾟΘﾟ))+ (ﾟДﾟ)[ﾟεﾟ]+((ﾟｰﾟ) + (ﾟΘﾟ))+ (ﾟΘﾟ)+ (ﾟДﾟ)[ﾟεﾟ]+((ﾟｰﾟ) + (o^_^o))+ (o^_^o)+ (ﾟДﾟ)[ﾟoﾟ]) (ﾟΘﾟ)) ('_');

这里附上原作者的aaencode编码地址，点击这里。

网页源码里可以查看到具体的编码过程，摘录如下。

function aaencode( text )
{var t;var b = ["(c^_^o)","(ﾟΘﾟ)","((o^_^o) - (ﾟΘﾟ))","(o^_^o)","(ﾟｰﾟ)","((ﾟｰﾟ) + (ﾟΘﾟ))","((o^_^o) +(o^_^o))","((ﾟｰﾟ) + (o^_^o))","((ﾟｰﾟ) + (ﾟｰﾟ))","((ﾟｰﾟ) + (ﾟｰﾟ) + (ﾟΘﾟ))","(ﾟДﾟ) .ﾟωﾟﾉ","(ﾟДﾟ) .ﾟΘﾟﾉ","(ﾟДﾟ) ['c']","(ﾟДﾟ) .ﾟｰﾟﾉ","(ﾟДﾟ) .ﾟДﾟﾉ","(ﾟДﾟ) [ﾟΘﾟ]"];var r = "ﾟωﾟﾉ= /｀ｍ´）ﾉ ~┻━┻   //*´∇｀*/ ['_']; o=(ﾟｰﾟ)  =_=3; c=(ﾟΘﾟ) =(ﾟｰﾟ)-(ﾟｰﾟ); "; if( /ひだまりスケッチ×(365|３５６)\s*来週も見てくださいね[!！]/.test( text ) ){r += "X=_=3; ";r += "\r\n\r\n    X / _ / X < \"来週も見てくださいね!\";\r\n\r\n";}r += "(ﾟДﾟ) =(ﾟΘﾟ)= (o^_^o)/ (o^_^o);"+"(ﾟДﾟ)={ﾟΘﾟ: '_' ,ﾟωﾟﾉ : ((ﾟωﾟﾉ==3) +'_') [ﾟΘﾟ] "+",ﾟｰﾟﾉ :(ﾟωﾟﾉ+ '_')[o^_^o -(ﾟΘﾟ)] "+",ﾟДﾟﾉ:((ﾟｰﾟ==3) +'_')[ﾟｰﾟ] }; (ﾟДﾟ) [ﾟΘﾟ] =((ﾟωﾟﾉ==3) +'_') [c^_^o];"+"(ﾟДﾟ) ['c'] = ((ﾟДﾟ)+'_') [ (ﾟｰﾟ)+(ﾟｰﾟ)-(ﾟΘﾟ) ];"+"(ﾟДﾟ) ['o'] = ((ﾟДﾟ)+'_') [ﾟΘﾟ];"+"(ﾟoﾟ)=(ﾟДﾟ) ['c']+(ﾟДﾟ) ['o']+(ﾟωﾟﾉ +'_')[ﾟΘﾟ]+ ((ﾟωﾟﾉ==3) +'_') [ﾟｰﾟ] + "+"((ﾟДﾟ) +'_') [(ﾟｰﾟ)+(ﾟｰﾟ)]+ ((ﾟｰﾟ==3) +'_') [ﾟΘﾟ]+"+"((ﾟｰﾟ==3) +'_') [(ﾟｰﾟ) - (ﾟΘﾟ)]+(ﾟДﾟ) ['c']+"+"((ﾟДﾟ)+'_') [(ﾟｰﾟ)+(ﾟｰﾟ)]+ (ﾟДﾟ) ['o']+"+"((ﾟｰﾟ==3) +'_') [ﾟΘﾟ];(ﾟДﾟ) ['_'] =(o^_^o) [ﾟoﾟ] [ﾟoﾟ];"+"(ﾟεﾟ)=((ﾟｰﾟ==3) +'_') [ﾟΘﾟ]+ (ﾟДﾟ) .ﾟДﾟﾉ+"+"((ﾟДﾟ)+'_') [(ﾟｰﾟ) + (ﾟｰﾟ)]+((ﾟｰﾟ==3) +'_') [o^_^o -ﾟΘﾟ]+"+"((ﾟｰﾟ==3) +'_') [ﾟΘﾟ]+ (ﾟωﾟﾉ +'_') [ﾟΘﾟ]; "+"(ﾟｰﾟ)+=(ﾟΘﾟ); (ﾟДﾟ)[ﾟεﾟ]='\\\\'; "+"(ﾟДﾟ).ﾟΘﾟﾉ=(ﾟДﾟ+ ﾟｰﾟ)[o^_^o -(ﾟΘﾟ)];"+ "(oﾟｰﾟo)=(ﾟωﾟﾉ +'_')[c^_^o];"+//TODO"(ﾟДﾟ) [ﾟoﾟ]='\\\"';"+ "(ﾟДﾟ) ['_'] ( (ﾟДﾟ) ['_'] (ﾟεﾟ+";r += "(ﾟДﾟ)[ﾟoﾟ]+ ";for( var i = 0; i < text.length; i++ ){n = text.charCodeAt( i );t = "(ﾟДﾟ)[ﾟεﾟ]+";if( n <= 127 ){t += n.toString( 8 ).replace( /[0-7]/g, function(c){ return b[ c ] + "+ "; } );}else{var m = /[0-9a-f]{4}$/.exec( "000" + n.toString(16 ) )[0];t += "(oﾟｰﾟo)+ " + m.replace( /[0-9a-f]/gi, function(c){ return b[ parseInt( c,16 ) ] + "+ "; } );}r += t;}r += "(ﾟДﾟ)[ﾟoﾟ]) (ﾟΘﾟ)) ('_');";return r;
}

代码是JS的，在后端PHP上运行是一件比较麻烦的事，考虑V8配置在win/linux环境兼容比较麻烦。本想网上找找有类似的直接拿来用之，可悲没有找到，只好手动将其代码译为PHP语法，并实现解码过程。

首先实现两个PHP没有的JS常用函数，兼容中文。

function charCodeAt($str, $index)
{$char = mb_substr($str, $index, 1, 'UTF-8');if (mb_check_encoding($char, 'UTF-8')){$ret = mb_convert_encoding($char, 'UTF-32BE', 'UTF-8');return hexdec(bin2hex($ret));}else{return null;}
}function uchr ($codes) {if (is_scalar($codes)) $codes= func_get_args();$str= '';foreach ($codes as $code){$buf = html_entity_decode('&#'.$code.';',ENT_NOQUOTES,'UTF-8');$buf == '&#'.$code.';' && ($buf = mb_convert_encoding('&#' . intval($code) . ';', 'UTF-8', 'HTML-ENTITIES'));$str.= $buf;}return $str;
}

接着是编码和解码的函数过程。

//简单实现没有封装，这个$b只能放到最外面了，比较丑w(ﾟДﾟ)w
$b = ["(c^_^o)","(ﾟΘﾟ)","((o^_^o) - (ﾟΘﾟ))","(o^_^o)","(ﾟｰﾟ)","((ﾟｰﾟ) + (ﾟΘﾟ))","((o^_^o) +(o^_^o))","((ﾟｰﾟ) + (o^_^o))","((ﾟｰﾟ) + (ﾟｰﾟ))","((ﾟｰﾟ) + (ﾟｰﾟ) + (ﾟΘﾟ))","(ﾟДﾟ) .ﾟωﾟﾉ","(ﾟДﾟ) .ﾟΘﾟﾉ","(ﾟДﾟ) ['c']","(ﾟДﾟ) .ﾟｰﾟﾉ","(ﾟДﾟ) .ﾟДﾟﾉ","(ﾟДﾟ) [ﾟΘﾟ]"];//编码的过程
function aaencode($text){global $b;$r = "ﾟωﾟﾉ= /｀ｍ´）ﾉ ~┻━┻   //*´∇｀*/ ['_']; o=(ﾟｰﾟ)  =_=3; c=(ﾟΘﾟ) =(ﾟｰﾟ)-(ﾟｰﾟ); ";if(preg_match('/ひだまりスケッチ×(365|３５６)\s*来週も見てくださいね[!！]/', $text)){$r .= "X=_=3; ";$r .= "\r\n\r\n    X / _ / X < \"来週も見てくださいね!\";\r\n\r\n";}$r .= "(ﾟДﾟ) =(ﾟΘﾟ)= (o^_^o)/ (o^_^o);"."(ﾟДﾟ)={ﾟΘﾟ: '_' ,ﾟωﾟﾉ : ((ﾟωﾟﾉ==3) +'_') [ﾟΘﾟ] ".",ﾟｰﾟﾉ :(ﾟωﾟﾉ+ '_')[o^_^o -(ﾟΘﾟ)] ".",ﾟДﾟﾉ:((ﾟｰﾟ==3) +'_')[ﾟｰﾟ] }; (ﾟДﾟ) [ﾟΘﾟ] =((ﾟωﾟﾉ==3) +'_') [c^_^o];"."(ﾟДﾟ) ['c'] = ((ﾟДﾟ)+'_') [ (ﾟｰﾟ)+(ﾟｰﾟ)-(ﾟΘﾟ) ];"."(ﾟДﾟ) ['o'] = ((ﾟДﾟ)+'_') [ﾟΘﾟ];"."(ﾟoﾟ)=(ﾟДﾟ) ['c']+(ﾟДﾟ) ['o']+(ﾟωﾟﾉ +'_')[ﾟΘﾟ]+ ((ﾟωﾟﾉ==3) +'_') [ﾟｰﾟ] + "."((ﾟДﾟ) +'_') [(ﾟｰﾟ)+(ﾟｰﾟ)]+ ((ﾟｰﾟ==3) +'_') [ﾟΘﾟ]+"."((ﾟｰﾟ==3) +'_') [(ﾟｰﾟ) - (ﾟΘﾟ)]+(ﾟДﾟ) ['c']+"."((ﾟДﾟ)+'_') [(ﾟｰﾟ)+(ﾟｰﾟ)]+ (ﾟДﾟ) ['o']+"."((ﾟｰﾟ==3) +'_') [ﾟΘﾟ];(ﾟДﾟ) ['_'] =(o^_^o) [ﾟoﾟ] [ﾟoﾟ];"."(ﾟεﾟ)=((ﾟｰﾟ==3) +'_') [ﾟΘﾟ]+ (ﾟДﾟ) .ﾟДﾟﾉ+"."((ﾟДﾟ)+'_') [(ﾟｰﾟ) + (ﾟｰﾟ)]+((ﾟｰﾟ==3) +'_') [o^_^o -ﾟΘﾟ]+"."((ﾟｰﾟ==3) +'_') [ﾟΘﾟ]+ (ﾟωﾟﾉ +'_') [ﾟΘﾟ]; "."(ﾟｰﾟ)+=(ﾟΘﾟ); (ﾟДﾟ)[ﾟεﾟ]='\\\\'; "."(ﾟДﾟ).ﾟΘﾟﾉ=(ﾟДﾟ+ ﾟｰﾟ)[o^_^o -(ﾟΘﾟ)];"."(oﾟｰﾟo)=(ﾟωﾟﾉ +'_')[c^_^o];"."(ﾟДﾟ) [ﾟoﾟ]='\\\"';"."(ﾟДﾟ) ['_'] ( (ﾟДﾟ) ['_'] (ﾟεﾟ+";$r .= "(ﾟДﾟ)[ﾟoﾟ]+ ";for( $i = 0; $i < mb_strlen($text); $i++ ){$n = charCodeAt($text,$i);$t = "(ﾟДﾟ)[ﾟεﾟ]+";if( $n <= 127 ){$t .= preg_replace_callback('/[0-7]/', function($c)use ($b){return $b[$c[0]]."+ ";}, ((string)decoct($n)));}else{if(preg_match('/[0-9a-f]{4}$/', '000'.((string)dechex($n)),$result)){$m = $result[0];}else{$m = '';}$t .= "(oﾟｰﾟo)+ " . preg_replace_callback('/[0-9a-f]/i',function($c)use ($b){return $b[ hexdec($c[0]) ] . "+ ";},$m);}$r .= $t;}$r .= "(ﾟДﾟ)[ﾟoﾟ]) (ﾟΘﾟ)) ('_');";return $r;
}//解码的过程(っ•̀ω•́)っ✎⁾⁾
function aadecode($text){global $b;$text = strtr($text, ["(ﾟДﾟ)[ﾟoﾟ]) (ﾟΘﾟ)) ('_');" => '']);for($i=0;$i<count($b);$i++){$buf = $b[$i];if($i <=7){//8进制逆向$str = (($i));$text = strtr($text, [$buf."+ "=>$str]);}else{//16进制逆向$text = strtr($text, [$buf."+ " => dechex($i)]);}}$text = preg_replace_callback('/\(ﾟДﾟ\)\[ﾟεﾟ\]\+(\d+)/', function($c){return uchr(octdec($c[1]));}, $text);$text = preg_replace_callback('/\(ﾟДﾟ\)\[ﾟεﾟ\]\+\(oﾟｰﾟo\)\+\s+([0-9a-f]{4})/', function($c){return uchr(hexdec($c[1]));}, $text);$pre = ["ﾟωﾟﾉ= /｀ｍ´）ﾉ ~┻━┻   //*´∇｀*/ ['_']; o=(ﾟｰﾟ)  =_=3; c=(ﾟΘﾟ) =(ﾟｰﾟ)-(ﾟｰﾟ); ","X=_=3; ","\r\n\r\n    X / _ / X < \"来週も見てくださいね!\";\r\n\r\n","(ﾟДﾟ) =(ﾟΘﾟ)= (o^_^o)/ (o^_^o);","(ﾟДﾟ)={ﾟΘﾟ: '_' ,ﾟωﾟﾉ : ((ﾟωﾟﾉ==3) +'_') [ﾟΘﾟ] ",",ﾟｰﾟﾉ :(ﾟωﾟﾉ+ '_')[o^_^o -(ﾟΘﾟ)] ",",ﾟДﾟﾉ:((ﾟｰﾟ==3) +'_')[ﾟｰﾟ] }; (ﾟДﾟ) [ﾟΘﾟ] =((ﾟωﾟﾉ==3) +'_') [c^_^o];","(ﾟДﾟ) ['c'] = ((ﾟДﾟ)+'_') [ (ﾟｰﾟ)+(ﾟｰﾟ)-(ﾟΘﾟ) ];","(ﾟДﾟ) ['o'] = ((ﾟДﾟ)+'_') [ﾟΘﾟ];","(ﾟoﾟ)=(ﾟДﾟ) ['c']+(ﾟДﾟ) ['o']+(ﾟωﾟﾉ +'_')[ﾟΘﾟ]+ ((ﾟωﾟﾉ==3) +'_') [ﾟｰﾟ] + ","((ﾟДﾟ) +'_') [(ﾟｰﾟ)+(ﾟｰﾟ)]+ ((ﾟｰﾟ==3) +'_') [ﾟΘﾟ]+","((ﾟｰﾟ==3) +'_') [(ﾟｰﾟ) - (ﾟΘﾟ)]+(ﾟДﾟ) ['c']+","((ﾟДﾟ)+'_') [(ﾟｰﾟ)+(ﾟｰﾟ)]+ (ﾟДﾟ) ['o']+","((ﾟｰﾟ==3) +'_') [ﾟΘﾟ];(ﾟДﾟ) ['_'] =(o^_^o) [ﾟoﾟ] [ﾟoﾟ];","(ﾟεﾟ)=((ﾟｰﾟ==3) +'_') [ﾟΘﾟ]+ (ﾟДﾟ) .ﾟДﾟﾉ+","((ﾟДﾟ)+'_') [(ﾟｰﾟ) + (ﾟｰﾟ)]+((ﾟｰﾟ==3) +'_') [o^_^o -ﾟΘﾟ]+","((ﾟｰﾟ==3) +'_') [ﾟΘﾟ]+ (ﾟωﾟﾉ +'_') [ﾟΘﾟ]; ","(ﾟｰﾟ)+=(ﾟΘﾟ); (ﾟДﾟ)[ﾟεﾟ]='\\\\'; ","(ﾟДﾟ).ﾟΘﾟﾉ=(ﾟДﾟ+ ﾟｰﾟ)[o^_^o -(ﾟΘﾟ)];","(oﾟｰﾟo)=(ﾟωﾟﾉ +'_')[c^_^o];","(ﾟДﾟ) [ﾟoﾟ]='\\\"';","(ﾟДﾟ) ['_'] ( (ﾟДﾟ) ['_'] (ﾟεﾟ+","(ﾟДﾟ)[ﾟoﾟ]+ ",];$rA = [];foreach($pre as $val){$rA[$val] = '';}$text = strtr($text,$rA);return $text;
}

别忘了加上之前提到的两个函数，调用如下。

$crytext = aaencode('console.log("唐宋元明清");');
echo $crytext;//ﾟωﾟﾉ= /｀ｍ´）ﾉ ~┻━┻   //*´∇｀*/ ['_']; o=(ﾟｰﾟ)......echo aadecode($crytext);//console.log("唐宋元明清");

先整理到此，后续补充。