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run code in 300+ PHP versions simultaneously
<?php $arrayFirst = [ "index" => [ 'a' => '1', ], [ 'a' => '2', ] ]; $arraySecond = [ "index" => [ 'b' => '1', ], [ 'b' => '2', ] ]; foreach ($arrayFirst as $k => &$row) { $row = array_merge($row, $arraySecond[$k]); } var_export($arrayFirst);
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
array ( 'index' => array ( 'a' => '1', 'b' => '1', ), 0 => array ( 'a' => '2', 'b' => '2', ), )
preferences:
125.56 ms | 407 KiB | 5 Q