3v4l.org

run code in 300+ PHP versions simultaneously
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Output for 8.1.0 - 8.1.32, 8.2.0 - 8.2.28, 8.3.0 - 8.3.20, 8.4.1 - 8.4.6
Deprecated: Return type of MyFilter::filter($in, $out, &$consumed, $closing) should either be compatible with php_user_filter::filter($in, $out, &$consumed, bool $closing): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/kaeRJ on line 5 eno eniL owt eniL eerht eniL
Output for 5.6.5 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.4.14 - 7.4.33, 8.0.1 - 8.0.30
eno eniL owt eniL eerht eniL
Output for 5.6.0 - 5.6.4, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.13, 8.0.0
eno eniL owt eniL
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137.79 ms | 414 KiB | 5 Q