What is the purpose of the array_filter function in PHP?

The array_filter function in PHP is used to filter the elements of an array using a callback function. This can be useful when you want to remove certain elements from an array based on a specific condition. The callback function is applied to each element of the array, and only the elements for which the callback function returns true are kept in the resulting array.

// Example of using array_filter to remove empty strings from an array
$array = ["apple", "", "banana", "", "cherry"];
$filteredArray = array_filter($array, function($value) {
    return $value !== "";
});

print_r($filteredArray);