3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $array = array( array( '1' => '2', '2' => '3' ), array( '1' => '3', '2' => '2' ) ); $letters = array(); foreach ($array as $value) { $letters = array_merge($letters, $value); } echo implode(', ', $letters);
based on eoPRI
Output for 4.3.0 - 7.2.0
2, 3, 3, 2