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run code in 150+ php & hhvm versions
Bugs & Features
<?php abstract class Tracker { abstract public function track(); } class MailTracker extends Tracker { public function track(array $actions, array $params) { } }
Output for 5.4.0 - 5.4.19
Fatal error: Declaration of MailTracker::track() must be compatible with Tracker::track() in /in/n0Ljf on line 9
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Fatal error: Declaration of MailTracker::track() must be compatible with that of Tracker::track() in /in/n0Ljf on line 9
Process exited with code 255.