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<?php $config = []; $foo = is_callable($config['callable']); $config['callable'] = 'nonexistent_callable'; $bar = is_callable($config['callable']); $config['callable'] = 'strtolower'; $baz = is_callable($config['callable']);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
Warning: Undefined array key "callable" in /in/iTlfC on line 3
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined index: callable in /in/iTlfC on line 3
Output for 7.3.32 - 7.3.33
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150.38 ms | 408 KiB | 5 Q