3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function test() { $n = 1; while (true) { $arg = yield $arg; echo $arg; echo $n; $n++; } } $test = test(); $test->send('A'); $test->send('B');
based on c9LXR
Output for hhvm-3.12.0, 7.0.0 - 7.1.0
Notice: Undefined variable: arg in /in/6vCjv on line 7 A1B2
Output for hhvm-3.10.0
Fatal error: Uncaught exception 'Exception' with message 'Need to call next() first' in /in/6vCjv:15 Stack trace: #0 /in/6vCjv(15): Generator->send() #1 {main}
Process exited with code 255.
Output for 5.4.0 - 5.6.28
Parse error: syntax error, unexpected '$arg' (T_VARIABLE) in /in/6vCjv on line 7
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_VARIABLE in /in/6vCjv on line 7
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_VARIABLE in /in/6vCjv on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/6vCjv on line 7
Process exited with code 255.