3v4l.org

run code in 300+ PHP versions simultaneously
<?php $customerDetails = array(); $customerDetails['billing']['firstname'] = "Sid"; $customerDetails['billing']['middlename'] = "R"; $customerDetails['billing']['lastname'] = "McLaughlin"; $customerDetails['billing']['company'] = NULL; foreach ($customerDetails['billing'] as $key => $value) { echo "Key: $key; Value: $value<br />\n"; }
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 - 5.5.35, 5.6.0 - 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
Key: firstname; Value: Sid<br /> Key: middlename; Value: R<br /> Key: lastname; Value: McLaughlin<br /> Key: company; Value: <br />
preferences:
293.56 ms | 406 KiB | 389 Q