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<?php $array = array( 0 => array( 0 => 'My Property', 1 => array( 0 => 'Tiles Market', 1 => 'My Floor' ) ) ); var_dump($array); $result = call_user_func_array('array_merge', $array); var_dump($result); $result = call_user_func_array('array_merge', $result[0]);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(1) { [0]=> array(2) { [0]=> string(11) "My Property" [1]=> array(2) { [0]=> string(12) "Tiles Market" [1]=> string(8) "My Floor" } } } array(2) { [0]=> string(11) "My Property" [1]=> array(2) { [0]=> string(12) "Tiles Market" [1]=> string(8) "My Floor" } } Fatal error: Uncaught TypeError: call_user_func_array(): Argument #2 ($args) must be of type array, string given in /in/31s5E:14 Stack trace: #0 {main} thrown in /in/31s5E on line 14
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 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
array(1) { [0]=> array(2) { [0]=> string(11) "My Property" [1]=> array(2) { [0]=> string(12) "Tiles Market" [1]=> string(8) "My Floor" } } } array(2) { [0]=> string(11) "My Property" [1]=> array(2) { [0]=> string(12) "Tiles Market" [1]=> string(8) "My Floor" } } Warning: call_user_func_array() expects parameter 2 to be array, string given in /in/31s5E on line 14
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
array(1) { [0]=> array(2) { [0]=> string(11) "My Property" [1]=> array(2) { [0]=> string(12) "Tiles Market" [1]=> string(8) "My Floor" } } } array(2) { [0]=> string(11) "My Property" [1]=> array(2) { [0]=> string(12) "Tiles Market" [1]=> string(8) "My Floor" } } Warning: array_merge(): Argument #1 is not an array in /in/31s5E on line 14
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
array(1) { [0]=> array(2) { [0]=> string(11) "My Property" [1]=> array(2) { [0]=> string(12) "Tiles Market" [1]=> string(8) "My Floor" } } } array(2) { [0]=> string(11) "My Property" [1]=> array(2) { [0]=> string(12) "Tiles Market" [1]=> string(8) "My Floor" } }

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