3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { function destroy() { unset($this); } } $foo = new Foo(); $foo->destroy(); var_dump($foo); unset($foo); var_dump($foo);
Output for 7.1.0 - 7.1.33, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Cannot unset $this in /in/o4G8q on line 7
Process exited with code 255.
Output for 5.0.4 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20
object(Foo)#1 (0) { } Notice: Undefined variable: foo in /in/o4G8q on line 15 NULL
Output for 5.0.0 - 5.0.3
object(Foo)#1 (0) { } Notice: Undefined variable: foo in /in/o4G8q on line 15 NULL
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
object(foo)(0) { } Notice: Undefined variable: foo in /in/o4G8q on line 15 NULL
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