3v4l.org

run code in 300+ PHP versions simultaneously
<?php $tests = array( 'test1' => array( '11', '22', '33', '44' ), 'test2' => array( '44', '55', '66', '77' ) ); $new = array(); $new2 = array(); foreach( $tests as $test ) { $new += $test; $new2 = array_merge( $new2, $test ); } print_r($new); print_r($new2);
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, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 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] => 11 [1] => 22 [2] => 33 [3] => 44 ) Array ( [0] => 11 [1] => 22 [2] => 33 [3] => 44 [4] => 44 [5] => 55 [6] => 66 [7] => 77 )
preferences:
300.82 ms | 406 KiB | 342 Q