3v4l.org

run code in 200+ PHP versions simultaneously
<?php $function = function () { yield 0; }; $wrapper = function () use ($function) { $generator = $function(); $generator->valid(); yield from $generator; $generator = $function(); // Comment out this line to get the correct result. $generator->valid(); yield from $generator; }; foreach ($wrapper() as $value) { echo $value; }
based on UfhNA
Output for 7.0.0 - 7.4.0
0
Output for 5.5.0 - 5.6.40
Parse error: syntax error, unexpected '$generator' (T_VARIABLE) in /in/GfJHG on line 10
Process exited with code 255.
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected '0' (T_LNUMBER) in /in/GfJHG on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_LNUMBER in /in/GfJHG on line 4
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/GfJHG on line 3
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_FUNCTION in /in/GfJHG on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/GfJHG on line 3
Process exited with code 255.