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<?php function reverseString($string) { $l = strlen($string); for($i=0; $i<$l/2; $i++) { $string[$i] = $string[$i] ^ $string[$l-$i]; $string[$l-$i] = $string[$i] ^ $string[$l-$i]; $string[$i] = $string[$i] ^ $string[$l-$i]; } return $string; } var_dump(reverseString('foo'));
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Uninitialized string offset 3 in /in/NJZOj on line 7 Fatal error: Uncaught Error: Cannot assign an empty string to a string offset in /in/NJZOj:7 Stack trace: #0 /in/NJZOj(14): reverseString('foo') #1 {main} thrown in /in/NJZOj on line 7
Process exited with code 255.

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