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<?php class Palindrome { public static function isPalindrome($str) { $s = toLower(preg_replace('/[^A-Za-z]/', '', $str)); echo $s; throw new Exception('Not implemented'); } } // For testing purposes (do not submit uncommented): echo Palindrome::isPalindrome('Noel sees Leon.');
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Call to undefined function toLower() in /in/qei9f:6 Stack trace: #0 /in/qei9f(13): Palindrome::isPalindrome('Noel sees Leon.') #1 {main} thrown in /in/qei9f on line 6
Process exited with code 255.

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