3v4l.org

run code in 300+ PHP versions simultaneously
<?php $default = array( 'a' => array( 'a' => 'a', 'b' => 'b', 'c' => 'c', ), ); $user = array( 'b' => 1, 'a' => array( 'b' => 'something', 'c' => 'something else', 'd' => 'd', ), 'c' => 2); var_export( array_replace_recursive($default, $user) );
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array ( 'a' => array ( 'a' => 'a', 'b' => 'something', 'c' => 'something else', 'd' => 'd', ), 'b' => 1, 'c' => 2, )
preferences:
148.15 ms | 407 KiB | 5 Q