Question

For example, I have an array like this:

array(4) ( “a” => string(0) “” “b” => string(0) “” “c” => string(0) “” “d” => string(0) “” )

None of given values should be empty.

At the moment, I use this:

if (!empty($_POST['x']['a']) && !empty($_POST['x']['b']) && !empty($_POST['x']['c']) && !empty($_POST['x']['d']))

…and that sucks from readability aspect.

Note: Array is associative.

Answer 1

count(array_filter($_POST['x'])) === 4

Some Explanation: Empty() is the Opposite of a Boolean Variable, array_filter removes all elements that equal false (which is !empty()) and this count must match the expectation of 4 elements then.

If the number of elements is defined by the total of elements submitted (empty or not), use count() instead the magic number:

if (count(array_filter($_POST['x'])) === count($_POST['x']))
{
    echo 'No empty elements in $_POST["x"]!';
}