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<?php function flattened_array_intersect($array,$total_arrays){ return implode(', ',array_keys(array_intersect(array_count_values($array),[$total_arrays]))); } echo flattened_array_intersect(array_merge([1,2,3,4,5],[1,3,5],[1,3,4,5],[1,3,5,6,7,8,9]),4);
Output for git.master, git.master_jit, rfc.property-hooks
1, 3, 5

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