3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public function saySomething() { return 'Hello!'; } } class ProxyFoo extends Foo {} function foobar(Foo $foo) { echo $foo->saySomething(); } class FooHolder { public Foo $foo; public function __construct(Foo $foo) { $this->foo = $foo; } public function echo() { echo $this->foo->saySomething(); } } $foo = new ProxyFoo(); foobar($foo); $fooHolder = new FooHolder($foo); $fooHolder->echo();
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
Hello!Hello!
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Parse error: syntax error, unexpected 'Foo' (T_STRING), expecting function (T_FUNCTION) or const (T_CONST) in /in/8R1vD on line 17
Process exited with code 255.
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