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<?php $a = array('e' => 22, 'r' => 66, 't' => 88); $b = array('t' => 65); print_r(array_merge($a, $b)); array_walk($a, function(&$value) { $value = 'e ' + $value; }); print_r($a);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [e] => 22 [r] => 66 [t] => 65 ) Fatal error: Uncaught TypeError: Unsupported operand types: string + int in /in/0ocqv:8 Stack trace: #0 [internal function]: {closure}(22, 'e') #1 /in/0ocqv(7): array_walk(Array, Object(Closure)) #2 {main} thrown in /in/0ocqv on line 8
Process exited with code 255.

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