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<?php $arr_1 = ['[param1]', 'remove', 'demo', '[param2]', 'some', '[param3]']; $arr_2 = ['value1', 'remove', 'some', 'value2', 'demo', 'value3']; var_export( [ 'clean1' => array_values(array_diff_assoc($arr_1, $arr_2)), 'clean2' => array_values(array_diff_assoc($arr_2, $arr_1)) ] );
Output for 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array ( 'clean1' => array ( 0 => '[param1]', 1 => 'demo', 2 => '[param2]', 3 => 'some', 4 => '[param3]', ), 'clean2' => array ( 0 => 'value1', 1 => 'some', 2 => 'value2', 3 => 'demo', 4 => 'value3', ), )

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108.78 ms | 1541 KiB | 4 Q