I am working with a one dimensional array in PHP. I would like to detect the presence of duplicate values, then count the number of duplicate values and out put the results. For example, given the following array:
$array = array('apple', 'orange', 'pear', 'banana', 'apple', 'pear', 'kiwi', 'kiwi', 'kiwi');
I would like to print:
apple (2) orange pear (2) banana kiwi (3)
Any advice on how to approach this problem?
Thanks.
Mike
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Answer
You can use array_count_values function
$array = array('apple', 'orange', 'pear', 'banana', 'apple', 'pear', 'kiwi', 'kiwi', 'kiwi'); print_r(array_count_values($array));
will output
Array ( [apple] => 2 [orange] => 1 [pear] => 2 etc... )