3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Super { private $foo = 123; // Same as `private $foo = 123;` function printSuper(){ return $this->foo; } } class Child extends Super { public $foo = 456; // Same as `private $foo = 456;` function printChild(){ return $this->foo; } } $o = new Child(); echo $o->printSuper(); // 123 echo $o->printChild(); // 456
Output for 5.6.38, 7.0.0 - 7.0.33, 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
123456

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117 ms | 1618 KiB | 4 Q