How to convert array to int in php

In PHP, if we need to convert an array into an integer, we can use the array_sum() function. This function can return the sum of all elements of the array. If the array contains non-numeric elements, they will be automatically converted to 0.

For example, if we have an array $numbers=array(1,2,'3',4,'five'), we can use the following code to convert it to an integer:

$numbers = array(1,2,'3',4,'five');
$sum = array_sum($numbers);
echo $sum;

The output result is: 10. This is because in this array, 1, 2, 3 and 4 are counted as 4 numbers, while the non-numeric element "five" is automatically converted to 0. Therefore, the sum is 10.

If we need to perform the same operation on a multi-dimensional array, we can use a recursive function to achieve it.

For example, if we have the following multidimensional array $arrays:

$arrays = array(
    array(1,2,3),
    array('four',5,6),
    array(7,8,'nine')
);

We can use the following code to convert it to an integer:

function recursiveArraySum($array) {
    $sum = 0;
    foreach($array as $value) {
        if(is_array($value)) {
            $sum += recursiveArraySum($value);
        } elseif(is_numeric($value)) {
            $sum += $value;
        } else {
            $sum += 0;
        }
    }
    return $sum;
}

$total = recursiveArraySum($arrays);
echo $total;

The output result is: 36. In this multidimensional array, 1, 2, 3, 5, 6, 7, and 8 are all evaluated as numbers, while the non-numeric elements "four" and "nine" are automatically converted to 0.

In short, using the array_sum() function can easily convert an array into an integer. For multi-dimensional arrays, we can use recursive functions to achieve the same operation.

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