3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "Stdclass"; var_dump($a instanceof Stdclass); var_dump($a instanceof $a); var_dump(is_a($a, "stdclass")); var_dump(is_a($a, $a));
Output for 5.3.0 - 5.3.6, 5.3.9 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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
bool(false) bool(false) bool(false) bool(false)
Output for 5.3.7 - 5.3.8
bool(false) bool(false) bool(true) bool(true)
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
bool(false) bool(false) Strict Standards: is_a(): Deprecated. Please use the instanceof operator in /in/N8c84 on line 6 bool(false) Strict Standards: is_a(): Deprecated. Please use the instanceof operator in /in/N8c84 on line 7 bool(false)
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/N8c84 on line 4
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
Parse error: parse error, unexpected T_STRING in /in/N8c84 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/N8c84 on line 4
Process exited with code 255.

preferences:
343.86 ms | 401 KiB | 460 Q