Frequency of values inside an array

$a1=array("first", "second", "third","fourth","fifth","second","third");
$new_array=array_count_values($a1);

while (list ($key, $val) = each ($new_array)) {
echo "$key -> $val <br>";
}

first -> 1
second -> 2
third -> 2
fourth -> 1
fifth -> 1

array_count_values ($input_array )

Example: Handling Mixed Data Types

$array = [1, "apple", "orange", "apple", 1, 2];
$result = array_count_values($array);
print_r($result);
// Output: Array ( [1] => 2 [apple] => 2 [orange] => 1 [2] => 1 )

Example: Counting Values in a Nested Array

function flatten_array($array) {
    $flat_array = [];
    foreach ($array as $item) {
        if (is_array($item)) {
            $flat_array = array_merge($flat_array, flatten_array($item));
        } else {
            $flat_array[] = $item;
        }
    }
    return $flat_array;
}

$array = [1, [1, 2], "apple", [1, "apple"]];
$flat_array = flatten_array($array);
$result = array_count_values($flat_array);
print_r($result);

// Output: Array ( [1] => 3 [2] => 1 [apple] => 2 )

Subhendu Mohapatra

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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