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<?php $_GET['id'] = '5'; function non_literal(string $a): string { $unpacked = unpack('C*', $a); foreach ($unpacked as $i => $v) { $unpacked[$i] = (int)($v & 0xff); } return pack(str_repeat('C', count($unpacked)), ...$unpacked); } $literal = $_GET['id']; var_dump( is_literal($literal), is_literal(non_literal($literal)) );
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Call to undefined function is_literal() in /in/8Z2GW:17 Stack trace: #0 {main} thrown in /in/8Z2GW on line 17
Process exited with code 255.

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