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<?php $re = '/(?<![^,])(?:rss-latest|listing-latest-no-category|category-128|page-9000)(?![^,])/m'; $str = 'page-9000,page-template,page-type,page-category-128,image-195,listing-latest,rss-latest,even-more-info,even-more-tags'; if (preg_match_all($re, $str, $matches)) { print_r($matches[0]); }
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => page-9000 [1] => rss-latest )

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