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<?php $a = array_diff(array('key1' => 'value1', 'key2' => 'value2'), array(array('key3' => 'value3', 'key2' => 'value4'))); var_dump($a);
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
Warning: Array to string conversion in /in/rgvjR on line 2 array(2) { ["key1"]=> string(6) "value1" ["key2"]=> string(6) "value2" }
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.29 - 7.2.33, 7.3.12 - 7.3.31, 7.4.0 - 7.4.33
Notice: Array to string conversion in /in/rgvjR on line 2 array(2) { ["key1"]=> string(6) "value1" ["key2"]=> string(6) "value2" }
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, 5.3.0 - 5.3.29, 7.3.32 - 7.3.33
array(2) { ["key1"]=> string(6) "value1" ["key2"]=> string(6) "value2" }

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