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run code in 300+ PHP versions simultaneously
<?php /*$str = '4111111111111111'; //$str = '4556494730120644'; $str = 'xxxxxxxxxxxx1111'; $sKey = '8519293193919192153'; $s = ''; $j = 0; for($i=0;$i < strlen($str);$i++) { $s .= chr( ord(substr($str,$i,1)) + ord(substr($sKey,$j++,1))); if($j==strlen($sKey)) $j=0; } ; echo utf8_decode($s); echo "\n"; echo utf8_encode($s); echo "===============\n"; echo utf8_decode("°­©±ª±«©±«±©jbjc");*/ echo utf8_encode('XXXXXXXXXXXX0644');
Output for 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Deprecated: Function utf8_encode() is deprecated in /in/EH1aT on line 26 XXXXXXXXXXXX0644
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27
XXXXXXXXXXXX0644

preferences:
197.64 ms | 405 KiB | 306 Q