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run code in 300+ PHP versions simultaneously
<?php interface Logger { public function log(string $msg); } class Application { private $logger; public function getLogger(): Logger { return $this->logger; } public function setLogger(Logger $logger) { $this->logger = $logger; } } $app = new Application; $app->setLogger(new class implements Logger { public function log(string $msg) { echo $msg; } }); var_dump($app->getLogger()->log("bla bla")); ?>
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
bla blaNULL
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.21
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/4bYGi on line 9
Process exited with code 255.
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