3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { function bar() { return $this->a ?: $this->a = 'b'; } } $foo = new Foo(); $foo->bar(); var_dump($foo);
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined property: Foo::$a in /in/h8qEn on line 9 Deprecated: Creation of dynamic property Foo::$a is deprecated in /in/h8qEn on line 9 object(Foo)#1 (1) { ["a"]=> string(1) "b" }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Warning: Undefined property: Foo::$a in /in/h8qEn on line 9 object(Foo)#1 (1) { ["a"]=> string(1) "b" }
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.29 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined property: Foo::$a in /in/h8qEn on line 9 object(Foo)#1 (1) { ["a"]=> string(1) "b" }
Output for 7.3.32 - 7.3.33
object(Foo)#1 (1) { ["a"]=> string(1) "b" }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected ':' in /in/h8qEn on line 9
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected ':' in /in/h8qEn on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/h8qEn on line 9
Process exited with code 255.

preferences:
207.18 ms | 401 KiB | 308 Q