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<?php $a = array(5 => true,4 => true,8 => true,6 => true); $b = array(5 => true,4 => true,6 => true,9 => true); print_r(array_diff_key($a,$b));
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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
Array ( [8] => 1 )
Output for 5.0.0 - 5.0.5
Fatal error: Call to undefined function array_diff_key() in /in/YEoLt on line 5
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: array_diff_key() in /in/YEoLt on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: array_diff_key() in /in/YEoLt on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: array_diff_key() in /in/YEoLt on line 5

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