<php  $str = 'ippr_z2C$qAzdH3FAzdH3Fojgojg_z&e3Bf5f5_z&e3Bv54AzdH3FrAzdH3Fda8a8a8nAzdH3Fda8a8a8n8m9bdc-8a0abn8cdb_z&e3B3r2'; function uncomplie($k){     $c = array('_z2C$q','_z&e3B','AzdH3F');     $d = array('w'=--> "a",'k'=> "b",'v'=> "c",'1'=> "d",'j'=> "e",'u'=> "f",'2'=> "g",'i'=> "h",'t'=> "i",'3'=> "j",'h'=> "k",'s'=> "l",'4'=> "m",'g'=> "n","5"=> "o",'r'=> "p",'q'=> "q","6"=> "r",'f'=> "s",'p'=> "t","7"=> "u",'e'=> "v",'o'=> "w","8"=> "1",'d'=> "2",'n'=> "3","9"=> "4",'c'=> "5",'m'=> "6","0"=> "7",'b'=> "8",'l'=> "9",'a'=> "0",'_z2C$q'=> ":",'_z&e3B'=> ".",'AzdH3F'=> "/");
    if(!$k || strpos($k, "http"))
        return $k;
    $j = $k;
    foreach ($c as $value) {
        $j = str_replace($value,$d[$value],$j);
    }
    $arr = str_split($j);
    foreach ($arr as $k=>$v) {
        if(preg_match('/^[a-w\d]+$/',$v))
            $arr[$k] = $d[$v];
    }
    return implode('',$arr);
}
print_r(uncomplie($str));

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