3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function foo() { return 'bar'; } if (empty(foo())) echo "it's empty";
Output for 5.5.24 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Output for 5.3.28 - 5.3.29, 5.4.20 - 5.4.45
Fatal error: Can't use function return value in write context in /in/1uUXL on line 9
Process exited with code 255.
Output for 5.0.0 - 5.3.27, 5.4.0 - 5.4.19
Fatal error: Can't use function return value in write context in /in/dgI2n on line 9
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_VARIABLE or '$' in /in/dgI2n on line 9
Process exited with code 255.
Output for 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_VARIABLE or '$' in /in/dgI2n on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/dgI2n on line 9
Process exited with code 255.
Output for 4.3.0
Parse error: parse error, unexpected T_STRING, expecting T_VARIABLE or '$' in /in/1uUXL on line 9
Process exited with code 255.