3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 1; (unset) $a; var_dump($a); $x = new StdClass; $x->stuff = 'foo'; var_dump(property_exists($x, "stuff")); var_dump($x->stuff); (unset)$x->stuff; var_dump(property_exists($x, "stuff")); var_dump($x->stuff);
Output for 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: The (unset) cast is no longer supported in /in/Q4X9X on line 4
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
Deprecated: The (unset) cast is deprecated in /in/Q4X9X on line 4 Deprecated: The (unset) cast is deprecated in /in/Q4X9X on line 12 int(1) bool(true) string(3) "foo" bool(true) string(3) "foo"
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.3.32 - 7.3.33
int(1) bool(true) string(3) "foo" bool(true) string(3) "foo"
preferences:
165.35 ms | 402 KiB | 182 Q