3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'router.format'; $array = array( 'router' => array( 'format' => 'xml', ), ); $string = explode('.', $string); $result = $array; for($i = 0; $i < count($string); ++$i) { $key = $string[$i]; if(isset($result[$key])) $result = $result[$key]; else break; } print_r($result);
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 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 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
xml
preferences:
240.56 ms | 406 KiB | 312 Q