<?php $items = array( array( 'type' => 'desktop', 'visits' => 10 ), array( 'type' => 'desktop', 'visits' => 10 ), array( 'type' => 'desktop', 'visits' => 10 ), array( 'type' => 'desktop', 'visits' => 10 ) ); $sum = array_map('array_sum',array_column($items,'visits')); var_dump($sum);
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