<?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",], ]; $tmp = []; foreach($ar as $ind=>$set){ if(!in_array($set['title'],$tmp)){ $tmp[] = $set['title']; } else { unset($ar[$ind]); } } print_r($ar);
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Value for `_results` contains invalid data `array`