<?php $text = "blah blah blah\nhello\nblah blah blah\nclass=\"world\" \nblah blah blah\nhello \nblah blah\nhello\nblah blah blah\nhello\nblah blah blah"; echo preg_match_all('~(?:\G(?!^)|\bworld\b).*?\K\bhello\b~s', $text);
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