3v4l.org

run code in 500+ PHP versions simultaneously
<?php $names = array('joe123456', 'joe123', '1joe1234', '123joe456'); foreach ($names as $name) { $new_name = preg_replace('/\d/', '', $name); if (strlen($new_name) <= strlen($name) - 6) { $name = $new_name; } echo "$name\n"; }
Output for 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 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
joe joe123 1joe1234 joe

preferences:
114.05 ms | 1498 KiB | 4 Q