3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function generator() { $a = 0; $b = 1; yield $b; while(true) { $c = $a+$b; $a = $b $b = $c yield $c; } }
Output for 5.4.0 - 5.4.31
Parse error: syntax error, unexpected '$b' (T_VARIABLE) in /in/GOXo8 on line 7
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_VARIABLE in /in/GOXo8 on line 7
Process exited with code 255.