3v4l.org

run code in 300+ PHP versions simultaneously
<?php $domains = array ( 0 => 'i1.wp.com', 1 => 'i1.wp.com', 2 => 'i2.wp.com', 3 => 'i0.wp.com', 4 => 'i2.wp.com', 5 => 'i2.wp.com', 6 => 'i0.wp.com', 7 => 'i2.wp.com', 8 => 'i0.wp.com', 9 => 'i0.wp.com' ); $tmp = array_count_values($domains); print_r ($tmp);
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Array ( [i1.wp.com] => 2 [i2.wp.com] => 4 [i0.wp.com] => 4 )
preferences:
122.59 ms | 402 KiB | 121 Q