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<?php $array = [ 0 => 'Apple', 2 => 'Orange', 5 => 'Pear', 8 => 'Pear' ]; $result = []; for ( $i = 0, $last = array_key_last($array); $i <= $last; ++$i ) { $result[$i] = $array[$i] ?? null; } var_export($result); echo "\n---\n"; var_export( array_replace( array_fill(0, array_key_last($array), null), $array ) );
Output for 7.4.0 - 7.4.33, 8.0.1 - 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 ( 0 => 'Apple', 1 => NULL, 2 => 'Orange', 3 => NULL, 4 => NULL, 5 => 'Pear', 6 => NULL, 7 => NULL, 8 => 'Pear', ) --- array ( 0 => 'Apple', 1 => NULL, 2 => 'Orange', 3 => NULL, 4 => NULL, 5 => 'Pear', 6 => NULL, 7 => NULL, 8 => 'Pear', )
preferences:
93.26 ms | 1293 KiB | 4 Q