3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "1,1,2,2,2,"; $string = rtrim($str, ','); $result = implode("', '", array_unique(explode(',', $string))); $result = "'$result'"; echo $result;
Output for 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 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
'1', '2'

preferences:
208 ms | 404 KiB | 220 Q