3v4l.org

run code in 300+ PHP versions simultaneously
<?php function bar($x){ if($x){ yield 1; }else{ return 'a'; } } var_dump(bar(true)); var_dump(bar(false)->getReturn());
Output for 8.4.1 - 8.4.12
object(Generator)#1 (1) { ["function"]=> string(3) "bar" } string(1) "a"
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 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) { } string(1) "a"
Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.28
Fatal error: Generators cannot return values using "return" in /in/KJPI4 on line 6
Process exited with code 255.
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141.38 ms | 408 KiB | 5 Q