<?php $productTitles = array( 'Super red Megaman T-shirt', 'Super Megaman blue T-shirt', 'Super black Megaman T-shirt', 'Super Megaman T-shirt - aquamarine', ); $productWords = explode(' ', array_pop($productTitles)); foreach ($productTitles as $productTitle) { $productWords = array_intersect($productWords, explode(' ', $productTitle)); } echo implode(' ', $productWords);
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