Как посчитать сумму массива на php?

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<?php

$arr = [1, 5, 7, 10];

// Вывод: 23
echo array_sum($arr);

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$numbers = array(1, 2, 3, 4, 5);
$sum = array_sum($numbers);
echo $sum; // Output: 15

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$numbers = array(1, 2, 3, 4, 5);
$sum = 0;
foreach ($numbers as $number) {
    $sum += $number;
}
echo $sum; // Output: 15

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$numbers = array(1, 2, 3, 4, 5);
$sum = 0;
$size = count($numbers);
for ($i = 0; $i < $size; $i++) {
    $sum += $numbers[$i];
}
echo $sum; // Output: 15

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$numbers = array(1, 2, 3, 4, 5);
$sum = array_reduce($numbers, function($carry, $item){
    $carry += $item;
    return $carry;
});
echo $sum; // Output: 15