3v4l.org

run code in 300+ PHP versions simultaneously
<?php define("Hi", "Hello"); echo Hi; $cars = array("car1"=>"BMW", "car2"=>"Ferrai", "car3"=>"Audi"); echo $cars[car1]; foreach($cars as $x=>$value) { echo "$x $value <br>"; } function add($x = 10 , $y = 15) { $z = $x+$y; return $z; } echo "4 + 3".add(4,3); echo add(); ?>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Hello Fatal error: Uncaught Error: Undefined constant "car1" in /in/WZ7jC:6 Stack trace: #0 {main} thrown in /in/WZ7jC on line 6
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Hello Warning: Use of undefined constant car1 - assumed 'car1' (this will throw an Error in a future version of PHP) in /in/WZ7jC on line 6 BMWcar1 BMW <br>car2 Ferrai <br>car3 Audi <br>4 + 3725
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33
Hello Notice: Use of undefined constant car1 - assumed 'car1' in /in/WZ7jC on line 6 BMWcar1 BMW <br>car2 Ferrai <br>car3 Audi <br>4 + 3725

preferences:
191.4 ms | 402 KiB | 254 Q