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<?php function reverseString($string) { $l = strlen($string) - 1; for($i = 0, $j = $l, $e = $l / 2; $i < $e; $i++, $j--) { $string[$i] ^= $string[$j]; $string[$j] ^= $string[$i]; $string[$i] ^= $string[$j]; } return $string; } echo reverseString('fooooooooo');
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Cannot use assign-op operators with string offsets in /in/Y6pDL:8 Stack trace: #0 /in/Y6pDL(16): reverseString('fooooooooo') #1 {main} thrown in /in/Y6pDL on line 8
Process exited with code 255.

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