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<?php $main_string = "23/CSE/4/2014"; $sub_string = "CSE/4/2014"; echo trim(str_replace($sub_string, '', $main_string), '/'); echo "\n"; $main_string = "CSE/4/2014/23"; $sub_string = "CSE/4/2014"; echo trim(str_replace($sub_string, '', $main_string), '/');

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Output for git.master, git.master_jit, rfc.property-hooks
23 23

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