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<?php $arr1 = array( "0" => 5, "1" => 2, "4" => 67 ); $arr2 = array( "0" => 5, "1" => 2, "8" => 78 ); array_merge($arr2, array_fill_keys(array_diff($arr1, $arr2), 0)); print_r($arr2);
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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 ( [0] => 5 [1] => 2 [8] => 78 )
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Fatal error: Call to undefined function array_fill_keys() in /in/Hk0A9 on line 15
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: array_fill_keys() in /in/Hk0A9 on line 15
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_fill_keys() in /in/Hk0A9 on line 15
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: array_fill_keys() in /in/Hk0A9 on line 15

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