3v4l.org

run code in 300+ PHP versions simultaneously
<?php $keys = array(); $keys[0] = "1/7/95"; $keys[1] = "1/7/95"; $keys[2] = "1/7/95"; $keys[3] = "1/7/95"; $keys[4] = "22/7/95"; $keys[5] = "22/7/95"; $keys[6] = "22/7/95"; $keys[7] = "11/7/95"; $keys[8] = "11/7/95"; $keys[9] = "11/7/95"; $keys[10] = "11/7/95"; $keys[11] = "main page"; $arr = array_unique($keys); print_r($arr);
Output for 5.6.0 - 5.6.29, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.5 - 7.2.33, 7.3.16 - 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
Array ( [0] => 1/7/95 [4] => 22/7/95 [7] => 11/7/95 [11] => main page )
preferences:
114.42 ms | 404 KiB | 194 Q