Online PHP editor | refs for Fjdk2

<?php $ar = [ ["uid" => 1, "title" => "Title A", "tstamp" => "1580296755",], ["uid" => 2, "title" => "Title B", "tstamp" => "1580296755",], ["uid" => 3, "title" => "Title B", "tstamp" => "1580296755",], ["uid" => 4, "title" => "Title C", "tstamp" => "1580296755",], ]; $tmp = []; $res = []; foreach($ar as $ind=>$set){ $tmp[$set['title']] = $ind; } foreach($tmp as $title=>$ind){ $res[] = $ar[$ind]; } print_r($res);