3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a= array('mela','mela' ,'pera','arancia','mela','mela','arancia'); $b= array_diff_key( $a , array_unique( $a ) ); foreach ($b as $c) { $row[]=$c; print_r($row); }

preferences:
37.97 ms | 402 KiB | 5 Q