3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php //Simple math class class Staircase { function __construct($numberOfSteps) { $this->numberOfSteps = $numberOfSteps; } //Returns a closure function buildingNumberOfSteps() { //We can't directly use $this inside closure $thisCopy = $this; return function($storeysNumber) use ($thisCopy) { return $storeysNumber*$thisCopy->numberOfSteps; }; } function buildingNumberOfStepsIncludingBasement() { return function($storeysNumber) { return ($storeysNumber + 1)*$this->numberOfSteps; }; } } $staircase = new Staircase(25); $numberOfStepsToReachRoofTopFromGround = $staircase->buildingNumberOfSteps(); $numberOfStepsToReachRoofTopFromBasement = $staircase->buildingNumberOfStepsIncludingBasement(); echo "PHP >= 5.4 allows me to climb the ".$numberOfStepsToReachRoofTopFromBasement(5)." steps to reach my rooftop from the basement while "; echo "5.3 <= PHP < 5.4 only allows me to climb from the ground... the ".$numberOfStepsToReachRoofTopFromGround(5)." steps :("; ?>
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.14.4, 7.0.0 - 7.1.0
PHP >= 5.4 allows me to climb the 150 steps to reach my rooftop from the basement while 5.3 <= PHP < 5.4 only allows me to climb from the ground... the 125 steps :(
Output for 5.3.0 - 5.3.29
Fatal error: Using $this when not in object context in /in/JShq9 on line 24
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/JShq9 on line 14
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/JShq9 on line 14
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/JShq9 on line 14
Process exited with code 255.