Find if an array is empty in PHP [duplicate]

Question

I have an array in PHP, which I have to check if it is empty.

    $length = count($array_new);
    if(empty($array_new)) 
        echo("Array is empty");
    else
        echo("Array is not empty");
    echo("\n");
    print_r($array_new);
    echo("Length of array is".$length);

The output is-

Array is not empty
Array
(
    [0] =>
    [1] =>
    [2] =>
    [3] =>
)
Length of array is 4

I know that the array is empty, then why does it show that the length of the array is 4? Can anyone tell me what is wrong here?

Answer 1

Your array is not empty, you have assigned 4 keys without value.

empty($array_new)    // false
empty($array_new[0]) // true

To remove empty values from array use:

$filtered = array_filter($array_new, function ($var) {
    return !is_null($var);
});

Documentation:

• empty()
• array_filter()