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<?php $string = 'This is a string!'; $i = 0; var_dump(array_filter(str_split($string), function($val, $key) use ($i) { return ++$i % 2; }));
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught ArgumentCountError: Too few arguments to function {closure}(), 1 passed and exactly 2 expected in /in/oDh0m:5 Stack trace: #0 [internal function]: {closure}('T') #1 /in/oDh0m(5): array_filter(Array, Object(Closure)) #2 {main} thrown in /in/oDh0m on line 5
Process exited with code 255.

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