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<?php $list = [ 'foo' => 'bar', 'foobar' => 'bar', 'bar' => 'foo', ]; var_dump(array_filter($list, function ($k, $v) { return $v === 'bar'; }));
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught ArgumentCountError: Too few arguments to function {closure}(), 1 passed and exactly 2 expected in /in/aYeLK:9 Stack trace: #0 [internal function]: {closure}('bar') #1 /in/aYeLK(9): array_filter(Array, Object(Closure)) #2 {main} thrown in /in/aYeLK on line 9
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Fatal error: Uncaught ArgumentCountError: Too few arguments to function {closure}(), 1 passed and exactly 2 expected in /in/aYeLK:9 Stack trace: #0 [internal function]: {closure}('bar') #1 /in/aYeLK(11): array_filter(Array, Object(Closure)) #2 {main} thrown in /in/aYeLK on line 9
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33
Warning: Missing argument 2 for {closure}() in /in/aYeLK on line 9 Notice: Undefined variable: v in /in/aYeLK on line 10 Warning: Missing argument 2 for {closure}() in /in/aYeLK on line 9 Notice: Undefined variable: v in /in/aYeLK on line 10 Warning: Missing argument 2 for {closure}() in /in/aYeLK on line 9 Notice: Undefined variable: v in /in/aYeLK on line 10 array(0) { }

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278.16 ms | 403 KiB | 330 Q