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<?php print_r(array_map( function($str) { return date('Y-m-d', $str); }, [ 'last day of this month', 'Last day of this month', 'lAst Day of This Month', ] ));
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: date(): Argument #2 ($timestamp) must be of type ?int, string given in /in/lKUFh:5 Stack trace: #0 /in/lKUFh(5): date('Y-m-d', 'last day of thi...') #1 [internal function]: {closure}('last day of thi...') #2 /in/lKUFh(3): array_map(Object(Closure), Array) #3 {main} thrown in /in/lKUFh on line 5
Process exited with code 255.

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