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<?php $body = 'List-Unsubscribe: <http://a.mydomain.com/u/1/100/23/f0fd224f822a5af1498fa326d201c8c4/>'; $getCampListEmailid =preg_match("/^List-Unsubscribe: <http:\/\/a.mydomain.com\/u\/([0-9]+)[\/]([0-9]+)[\/]([0-9]+)[\/][a-f0-9]{32}[\/>]/",$body,$match); var_dump($getCampListEmailid); var_dump($match);
Output for git.master, git.master_jit, rfc.property-hooks
int(1) array(4) { [0]=> string(85) "List-Unsubscribe: <http://a.mydomain.com/u/1/100/23/f0fd224f822a5af1498fa326d201c8c4/" [1]=> string(1) "1" [2]=> string(3) "100" [3]=> string(2) "23" }

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