3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function a() { var_dump(yield yield); } foreach(a() as $k => $v) { var_dump($k, $v); }
based on QXlTE
Output for 5.5.0 - 5.6.28, 7.0.0 - 7.1.0
int(0) NULL int(1) NULL NULL
Output for hhvm-3.12.0 - 3.13.2
Fatal error: Uncaught Error: syntax error, unexpected T_YIELD, expecting ')' in /in/b4P9s:5 Stack trace: #0 {main}
Process exited with code 255.
Output for hhvm-3.10.0
Fatal error: syntax error, unexpected T_YIELD, expecting ')' in /in/b4P9s on line 5
Process exited with code 255.
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected 'yield' (T_STRING) in /in/b4P9s on line 5
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected T_STRING in /in/b4P9s on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING in /in/b4P9s on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/b4P9s on line 5
Process exited with code 255.