3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = new stdClass; $a->first = 1; $b = array($a->first, $a->second ?: NULL);
based on u6DZK
Output for 8.0.0 - 8.0.3
Warning: Undefined property: stdClass::$second in /in/DsRb2 on line 6
Output for 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 - 7.2.34, 7.3.0 - 7.3.27, 7.4.0 - 7.4.16
Notice: Undefined property: stdClass::$second in /in/DsRb2 on line 6
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected ':' in /in/DsRb2 on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected ':' in /in/DsRb2 on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/DsRb2 on line 6
Process exited with code 255.