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<?php $sInp = "°­©±ª±«©±«±©jbjc"; $sKey = "8519293193919192153"; $s = ""; $j = 0; for ($i=0;$i< strlen($sInp);$i++) { $s .= chr( ord(substr($sInp,$i,1)) - ord(substr($sKey,$j++,1)) ); if($j==strlen($sKey)) $j=0; } echo $s;

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40.69 ms | 402 KiB | 5 Q