3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data_arr= array("101","102","103","103","104","101","105","106","106","106","107","108","108","109","110","102","111"); $uniq = array(); $last = null; foreach ($data_arr as $elem) { if ($elem != $last) { $last = $elem; $uniq[] = $elem; } } echo implode(' ', $uniq);
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, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 - 8.2.18, 8.3.0 - 8.3.6
101 102 103 104 101 105 106 107 108 109 110 102 111
preferences:
288 ms | 406 KiB | 460 Q