3v4l.org

run code in 300+ PHP versions simultaneously
<?php $testSite = array( 'name' => 'test site', 'modules' => array( 'bar' => true ) ); $testData = array( 'modules' => array( 'bar' => false ) ); error_log('before ' . print_r($testSite, true)); $testSite = array_merge_recursive($testSite, $testData); error_log('after ' . print_r($testSite, true));
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, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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
before Array ( [name] => test site [modules] => Array ( [bar] => 1 ) ) after Array ( [name] => test site [modules] => Array ( [bar] => Array ( [0] => 1 [1] => ) ) )

preferences:
319.8 ms | 406 KiB | 460 Q