Quiero decodificar este código. No tengo idea de qué es, excepto que es algún tipo de código. ¿Puede alguien ayudarme por favor?

    <?php    if (!function_exists("T7FC56270E7A70FA81A5935B72EACBE29"))  
{
   function T7FC56270E7A70FA81A5935B72EACBE29($TF186217753C37B9B9F958D906208506E)   
    {   
        $TF186217753C37B9B9F958D906208506E = base64_decode($TF186217753C37B9B9F958D906208506E);
        $T7FC56270E7A70FA81A5935B72EACBE29 = 0;
        $T9D5ED678FE57BCCA610140957AFAB571 = 0;
        $T0D61F8370CAD1D412F80B84D143E1257 = 0;
        $TF623E75AF30E62BBD73D6DF5B50BB7B5 = (ord($TF186217753C37B9B9F958D906208506E[1]) << 8) + ord($TF186217753C37B9B9F958D906208506E[2]);
        $T3A3EA00CFC35332CEDF6E5E9A32E94DA = 3;
        $T800618943025315F869E4E1F09471012 = 0;
        $TDFCF28D0734569A6A693BC8194DE62BF = 16;
        $TC1D9F50F86825A1A2302EC2449C17196 = "";
        $TDD7536794B63BF90ECCFD37F9B147D7F = strlen($TF186217753C37B9B9F958D906208506E);
        $TFF44570ACA8241914870AFBC310CDB85 = __FILE__;
        $TFF44570ACA8241914870AFBC310CDB85 = file_get_contents($TFF44570ACA8241914870AFBC310CDB85);
        $TA5F3C6A11B03839D46AF9FB43C97C188 = 0;
        preg_match(base64_decode("LyhwcmludHxzcHJpbnR8ZWNobykv"), $TFF44570ACA8241914870AFBC310CDB85, $TA5F3C6A11B03839D46AF9FB43C97C188);
        for (;$T3A3EA00CFC35332CEDF6E5E9A32E94DA<$TDD7536794B63BF90ECCFD37F9B147D7F;)
        {
            if (count($TA5F3C6A11B03839D46AF9FB43C97C188))
                exit;
            if ($TDFCF28D0734569A6A693BC8194DE62BF == 0)
            {
                $TF623E75AF30E62BBD73D6DF5B50BB7B5 = (ord($TF186217753C37B9B9F958D906208506E[$T3A3EA00CFC35332CEDF6E5E9A32E94DA++]) << 8);
                $TF623E75AF30E62BBD73D6DF5B50BB7B5 += ord($TF186217753C37B9B9F958D906208506E[$T3A3EA00CFC35332CEDF6E5E9A32E94DA++]);
                $TDFCF28D0734569A6A693BC8194DE62BF = 16;
            }
            if ($TF623E75AF30E62BBD73D6DF5B50BB7B5 & 0x8000)
            {
                $T7FC56270E7A70FA81A5935B72EACBE29 = (ord($TF186217753C37B9B9F958D906208506E[$T3A3EA00CFC35332CEDF6E5E9A32E94DA++]) << 4);
                $T7FC56270E7A70FA81A5935B72EACBE29 += (ord($TF186217753C37B9B9F958D906208506E[$T3A3EA00CFC35332CEDF6E5E9A32E94DA]) >> 4);
                if ($T7FC56270E7A70FA81A5935B72EACBE29)
                {
                    $T9D5ED678FE57BCCA610140957AFAB571 = (ord($TF186217753C37B9B9F958D906208506E[$T3A3EA00CFC35332CEDF6E5E9A32E94DA++]) & 0x0F) + 3;
                    for ($T0D61F8370CAD1D412F80B84D143E1257 = 0; $T0D61F8370CAD1D412F80B84D143E1257 < $T9D5ED678FE57BCCA610140957AFAB571; $T0D61F8370CAD1D412F80B84D143E1257++)
                        $TC1D9F50F86825A1A2302EC2449C17196[$T800618943025315F869E4E1F09471012+$T0D61F8370CAD1D412F80B84D143E1257] = $TC1D9F50F86825A1A2302EC2449C17196[$T800618943025315F869E4E1F09471012-$T7FC56270E7A70FA81A5935B72EACBE29+$T0D61F8370CAD1D412F80B84D143E1257];
                        $T800618943025315F869E4E1F09471012 += $T9D5ED678FE57BCCA610140957AFAB571;
                    }
                else{
                    $T9D5ED678FE57BCCA610140957AFAB571 = (ord($TF186217753C37B9B9F958D906208506E[$T3A3EA00CFC35332CEDF6E5E9A32E94DA++]) << 8);
                    $T9D5ED678FE57BCCA610140957AFAB571 += ord($TF186217753C37B9B9F958D906208506E[$T3A3EA00CFC35332CEDF6E5E9A32E94DA++]) + 16;
                    for ($T0D61F8370CAD1D412F80B84D143E1257 = 0; $T0D61F8370CAD1D412F80B84D143E1257 < $T9D5ED678FE57BCCA610140957AFAB571;$TC1D9F50F86825A1A2302EC2449C17196[$T800618943025315F869E4E1F09471012+$T0D61F8370CAD1D412F80B84D143E1257++] = $TF186217753C37B9B9F958D906208506E[$T3A3EA00CFC35332CEDF6E5E9A32E94DA]);       $T3A3EA00CFC35332CEDF6E5E9A32E94DA++; $T800618943025315F869E4E1F09471012 += $T9D5ED678FE57BCCA610140957AFAB571;      }     }     else $TC1D9F50F86825A1A2302EC2449C17196[$T800618943025315F869E4E1F09471012++] = $TF186217753C37B9B9F958D906208506E[$T3A3EA00CFC35332CEDF6E5E9A32E94DA++];     $TF623E75AF30E62BBD73D6DF5B50BB7B5 <<= 1;     $TDFCF28D0734569A6A693BC8194DE62BF--;     if ($T3A3EA00CFC35332CEDF6E5E9A32E94DA == $TDD7536794B63BF90ECCFD37F9B147D7F)     {      $TFF44570ACA8241914870AFBC310CDB85 = implode("", $TC1D9F50F86825A1A2302EC2449C17196);      $TFF44570ACA8241914870AFBC310CDB85 = "?".">".$TFF44570ACA8241914870AFBC310CDB85."<"."?";      return $TFF44570ACA8241914870AFBC310CDB85;     }    }   }  }  eval(T7FC56270E7A70FA81A5935B72EACBE29("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"));  ?>