3v4l.org

run code in 300+ PHP versions simultaneously
<?php function bar($x){ if($x){ yield 1; yield 2; }else{ return 'a'; } } var_dump(bar(true)); var_dump(bar(false));
Output for 8.4.1 - 8.4.12
object(Generator)#1 (1) { ["function"]=> string(3) "bar" } object(Generator)#1 (1) { ["function"]=> string(3) "bar" }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25
object(Generator)#1 (0) { } object(Generator)#1 (0) { }
Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.28
Fatal error: Generators cannot return values using "return" in /in/M2aeM on line 8
Process exited with code 255.
preferences:
96.17 ms | 408 KiB | 5 Q