3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo () { for ($i = 0; $i < 10; $i++) { yield $i; } } while (foo()->valid()) { foo()->next(); echo foo()->current(); }
Output for 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
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Process exited with code 137.
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected '$i' (T_VARIABLE) in /in/137uX on line 5
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_VARIABLE in /in/137uX on line 5
Process exited with code 255.
preferences:
378.33 ms | 401 KiB | 297 Q