PHP statistics arrays and unique arrays

Statistical frequency of the occurrence of array elements

The Array_count_values () function returns an array containing the associated key/value pairs. In the form of Z

Array array_count_values (array array)

Each of these keys represents a value in Input_array, and the corresponding value indicates that the key appears in Input_array (as a value)

The frequency. Examples are as follows:

$states = Array ("Ohio", "Iowa", "Arizona", "Iowa", "Ohio");

$stateFrequency = Array_count_values ($states);

Print_r ($stateFrequency);

This will return:

Array ([Ohio] = 2 [Iowa] = 2 [Arizona] + 1)

Determining unique array elements

The Array_uniqueo function removes all duplicate values in the array and returns an array of unique values. The form is:

Array array_unique (array array)

Examples are as follows:

$states = Array ("Ohio", "Iowa", "Arizona", "Iowa Gate" Ohio ");

$uniqueStates = Array_unique ($states);

Print_r ($uniqueStates);

This will return:

Array ([0] = Ohio [1] = Iowa [2] = Arizona)

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