3v4l.org

run code in 500+ PHP versions simultaneously
<?php $xml = new SimpleXMLElement('<?xml version="1.0" encoding="UTF-8"?><doc><elem/><elem/></doc>'); var_dump($xml instanceof \Countable); echo 'Count: ' . count($xml), PHP_EOL; echo 'Strlen: ' . strlen($xml), PHP_EOL; echo 'MB Strlen: ' . mb_strlen($xml), PHP_EOL;
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
bool(true) Count: 2 Strlen: 0 MB Strlen: 0
Output for 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
bool(false) Count: 2 Strlen: 0 MB Strlen: 0
preferences:
116.39 ms | 1969 KiB | 4 Q