3v4l.org

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<?php $a = ['test' => '1', 'test2' => 2, 'test3' => 3]; $filter = ['test', 'test2']; $a = array_intersect_key($a, array_flip($filter)); vardump($a);
Output for 7.0.0 - 7.0.20, 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, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Call to undefined function vardump() in /in/nh4lg:8 Stack trace: #0 {main} thrown in /in/nh4lg on line 8
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Fatal error: Call to undefined function vardump() in /in/nh4lg on line 8
Process exited with code 255.

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