<?php $regex = '#<tag foo="bar">([\w\s]+[^\s]+)\s?</tag>#'; echo preg_replace($regex, '\1', '<tag foo="bar">Jacopo Nuzzi</tag>'); echo preg_replace($regex, '\1', '<tag foo="bar">Jacopo Nuzzi </tag>'); echo preg_replace($regex, '\1', '<tag foo="bar">Jacopo </tag>'); echo preg_replace($regex, '\1', '<tag foo="bar">Jacopo</tag>');
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