php-如何在多维数组中同时检查空数组和键没有值

Question

$marks=array( 
            "mohammad" => array (
               "physics" => array([0]=>35,[1]=>45)
               "maths" => 30,   
               "chemistry" => 39
            ),

            "qadir" => array (
               "physics" => array(),
               "maths" => 32,
               "chemistry" => 29
            ),

            "zara" => array (
               "physics" => array([0]=>),
               "maths" => 22,
               "chemistry" => 39
            )
         );

In the above array, "physics" element has array of values in "mohammad",empty array in "qadir" and in "Zara" it has index [0] with no value.

How can we check for "physics" is empty array or empty value for first index?

I have tried in if loop like below:

$name ='qadir'
if(!empty($marks[$name]['physics'])){//do here}

The above code working fine for 'qadir' but not for 'Zara'.I wish to check both cases at the same time.

Please suggest your thoughts.

Answer 1

Use array_filter(). This will remove any empty values from the array which will check the empty condition correctly. Something like:

$filteredArray = array_filter($marks[$name]['physics']);
if(!empty($filteredArray)) {//do here}