3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function & genRefInner() { $var = 1; yield $var; } function genRefOuter() { return genRefInner(); } foreach(genRefOuter() as &$i) { var_dump($i); }
based on gr0IB
Output for 5.5.0 - 7.2.0
int(1)
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected '$var' (T_VARIABLE) in /in/ZJLnH 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_VARIABLE in /in/ZJLnH 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_VARIABLE in /in/ZJLnH on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/ZJLnH on line 5
Process exited with code 255.