3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class Base { const x = A::y; } class Derived extends Base { const y = 42; } echo Base::x;
Output for 5.2.4 - 5.2.12, 5.3.0 - 5.6.28, 7.0.0 - 7.1.0
Fatal error: Class 'A' not found in /in/Ar7R6 on line 10
Process exited with code 255.
Output for hhvm-3.12.0
Fatal error: Class undefined: A in /in/Ar7R6 on line 3
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.2.13 - 5.2.17
Fatal error: Undefined class constant 'A::y' in /in/Ar7R6 on line 10
Process exited with code 255.
Output for 5.0.0 - 5.2.3
Notice: Use of undefined constant A::y - assumed 'A::y' in /in/Ar7R6 on line 10 A::y
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/Ar7R6 on line 3
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_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/Ar7R6 on line 3
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/Ar7R6 on line 3
Process exited with code 255.