3v4l.org

run code in 300+ PHP versions simultaneously
<?php $input=10; $number = array('10','0','1','2','3','4','5','6','7','8','9'); $text = array('k','a','b','c','d','e','f','g','h','i','j'); $print = str_replace($number, $text, $input); echo $print;
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
k

preferences:
268.82 ms | 405 KiB | 336 Q