Set Empty Array Length in PHP

In PHP, the length of an array is determined by the number of elements it contains, so you cannot directly set the length of an empty array like in other programming languages. If you want to create an empty array with a specific length, you can use a loop to add a specified number of elements, or you can use the array_fill() function to create an array of a specified length with the same value in each element.

Example 1: Create an empty array of a specified length using a loop.

$length = 5;
$array = array();
for ($i = 0; $i < $length; $i++) {
    $array[] = null;
}

Example 2: Create an empty array of a specified length using the array_fill() function.

$length = 5;
$array = array_fill(0, $length, null);

By using the above method, you can create an empty array with a specified length and manipulate it as needed.