March 3rd, 2023
Remove duplicates in php with array_unique(). Now you get only unique values in array - no duplicates.
1$cities = ['Rio', 'London', 'London', 'Rome', 'NY']2 3$uniqueCities = array_unique($cities) // ['Rio', 'London', 'Rome', 'NY']If you want to find duplicates and then count them, use array_diff_key() and array_count_values():
1$duplicateCities = array_diff_key($cities, $uniqueCities) // [London]2 3array_count_values($duplicateCities); // 1