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<?php $list = [ 'foo' => 'bar', 'foobar' => 'bar', 'bar' => 'foo', ]; var_dump(array_filter($list, function ($value) { return $value === 'bar'; })); var_dump(array_filter($list, function ($key, $value) { return $value === 'bar'; }));
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { ["foo"]=> string(3) "bar" ["foobar"]=> string(3) "bar" } Fatal error: Uncaught ArgumentCountError: Too few arguments to function {closure}(), 1 passed and exactly 2 expected in /in/oPX72:13 Stack trace: #0 [internal function]: {closure}('bar') #1 /in/oPX72(13): array_filter(Array, Object(Closure)) #2 {main} thrown in /in/oPX72 on line 13
Process exited with code 255.

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