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run code in 200+ php & hhvm versions
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<?php class C { public function getValue() { return 4; } } $c = new C(); var_dump(is_null($c->getValue())); var_dump(is_numeric($c->getValue()));
Output for 5.0.0 - 5.6.30, hhvm-3.10.1 - 3.17.3, 7.0.0 - 7.3.0rc3
bool(false) bool(true)
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/WR6dG on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/WR6dG on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/WR6dG on line 4
Process exited with code 255.