3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $discoveredAt; if (isset($discoveredAt)) { echo "Set as Null" . PHP_EOL; } else { echo "Not set: NULL" . PHP_EOL; } $discoveredAt = ""; if (empty($discoveredAt)) { echo "Set as empty string" . PHP_EOL; } else { echo "Not set: empty string" . PHP_EOL; }
based on OFGkt
Output for 5.1.0 - 7.2.6
Not set: NULL Set as empty string
Output for 5.0.4 - 5.0.5
Notice: Undefined variable: discoveredAt in /in/t6n6p on line 3 Not set: NULL Set as empty string
Output for 4.3.10 - 4.4.9, 5.0.2 - 5.0.3
Notice: Undefined variable: discoveredAt in /in/t6n6p on line 3 Not set: NULL Set as empty string
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
Notice: Undefined variable: discoveredAt in /in/t6n6p on line 3 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/t6n6p on line 8 Not set: NULLPHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/t6n6p on line 14 Set as empty stringPHP_EOL