3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function printer() { $i=true; $times=1; while ($i) { $string = yield; yield $string; $times++; $i=false; echo $times,"\n"; } } $printer = printer(); $printer->send('Hello world!'); ?>
Output for 5.5.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Output for hhvm-3.10.0
Fatal error: Uncaught exception 'Exception' with message 'Need to call next() first' in /in/vfkKC:15 Stack trace: #0 /in/vfkKC(15): Generator->send() #1 {main}
Process exited with code 255.
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected '$string' (T_VARIABLE) in /in/vfkKC 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/vfkKC 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/vfkKC on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/vfkKC on line 7
Process exited with code 255.