3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str="a b c d e f g h i j "; $replacements = [ "a" => "6a", "b" => "6e", "c" => "6i", "d" => "6o", "e" => "6u", "f" => "5a", "g" => "5e", "h" => "5i", "i" => "5o", "j" => "5u", ]; echo strtr($str, $replacements);?>
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 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 - 8.3.27, 8.4.1 - 8.4.14
6a 6e 6i 6o 6u 5a 5e 5i 5o 5u
preferences:
114.97 ms | 408 KiB | 5 Q