php-how to check both empty array and key without value at the same time in multidimensional array

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.

jitendrapurohit · Accepted Answer · 2016-09-19 10:10:27Z

3

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}

edited Sep 19, 2016 at 10:10

answered Sep 19, 2016 at 9:25

jitendrapurohit

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3 Comments

Nithya Over a year ago

,it is working fine..but in my php editor it showing error Arbitrary expressions in empty is allowed only in php 5.5..But my php version is 5.5.12

Nithya Over a year ago

Hi..It is working fine..I have question why it is not working out if filter with whole array like array_filter($marks).

jitendrapurohit Over a year ago

PHP manual says empty — Determine whether a **variable** is empty and array_filter is a function call not a variable - Kindly accept this answer if this resolved your issue

Juan Ignacio Pérez Sacristán · Accepted Answer · 2016-09-19 09:25:52Z

1

Try this:

if (!empty($marks[$name]['physics']) || !isset($marks[$name]['physics'][0])) {

answered Sep 19, 2016 at 9:25

Juan Ignacio Pérez Sacristán

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Comments

Vishal Khunt · Accepted Answer · 2016-09-19 09:26:14Z

0

Use bellow code for null check in array

if(!empty($marks[$name]['physics']){
   if(!in_array(null, $haystack, true)){
     //do here
   }
}

answered Sep 19, 2016 at 9:26

Vishal Khunt

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