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<?php $getValue = '1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,5'; if (is_string($getValue)) { $result = max(array_count_values(array_filter(explode(',', $getValue)))); } if ($result > 1) { echo 'Duplicate items were found!'; } else { echo 'No Duplicate'; }
Output for git.master, git.master_jit, rfc.property-hooks
Duplicate items were found!

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