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<?php $array = array( 'foo' => 'bar', 'baz' => 'foobar' ); var_dump(array_key_exists(array('foo', 'baz')), $array);
Output for 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 ArgumentCountError: array_key_exists() expects exactly 2 arguments, 1 given in /in/OTHjp:8 Stack trace: #0 /in/OTHjp(8): array_key_exists(Array) #1 {main} thrown in /in/OTHjp on line 8
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: array_key_exists() expects exactly 2 parameters, 1 given in /in/OTHjp on line 8 NULL array(2) { ["foo"]=> string(3) "bar" ["baz"]=> string(6) "foobar" }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Wrong parameter count for array_key_exists() in /in/OTHjp on line 8 NULL array(2) { ["foo"]=> string(3) "bar" ["baz"]=> string(6) "foobar" }

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