3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php interface Counter { /** @return self */ public function count(); /** @return int */ public function getCount(); } class EchoingCounter implements Counter { private $counter; public function __construct(Counter $counter) { $this->counter = $counter; } public function count() { echo __METHOD__ . "\n"; $this->counter->count(); return $this; } public function getCount() { echo __METHOD__ . "\n"; return $this->counter->getCount(); } } class FluentCounter implements Counter { private $count = 0; public function count() { $this->count += 1; return $this; } public function getCount() { return $this->count; } } $counter = new EchoingCounter(new FluentCounter()); $counter = $counter->count()->count()->count()->count(); echo $counter->getCount();
Output for 5.0.0 - 7.1.0
EchoingCounter::count EchoingCounter::count EchoingCounter::count EchoingCounter::count EchoingCounter::getCount 4
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/AilJu on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING in /in/AilJu on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/AilJu on line 2
Process exited with code 255.