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<?php $utmStr = 'http://vk.com/?utm_source=yandex&utm_medium=cpc&utm_campaign={campaign_id}&utm_content={ad_id}&utm_term={keyword}'; $start = strpos($utmStr, 'medium') + 7; $end = stripos($utmStr, 'utm', $start); $my = substr($utmStr, $start, $end); var_dump($my);
Output for git.master, git.master_jit, rfc.property-hooks
string(48) "cpc&utm_campaign={campaign_id}&utm_content={ad_i"

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