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<?php $input = ["a", "b"]; function search($input) { $result = $input; foreach($input as $a) { foreach($input as $b) { $result []= $a + $b; } } //return array_unique($result); return $result; } var_dump(search($input));
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: Unsupported operand types: string + string in /in/SO78e:12 Stack trace: #0 /in/SO78e(20): search(Array) #1 {main} thrown in /in/SO78e on line 12
Process exited with code 255.

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