CODEWITHSUNDEEP
phparraysmultidimensional-array
Kid Diamond
Kid Diamond

Reputation: 2301

Remove empty arrays from multidimensional array

I've got an array I use in a FormValidator class, but at some point I end up with an array sort of like the following. But I would like to remove all empty arrays from that array so that in my validation it's not gonna check for values inside the empty array, which is inefficient.

Is there a function to remove empty arrays from multidimensional arrays?

I know about array_filter() but that seems to only work with array element values.

array(2)
{
  ["recaptcha_response_field"]=>
  array(0) {
  }
  ["terms"]=>
  array(0) {
  }
}

Upvotes: 3

Views: 14028

Answers (4)

sunny
sunny

Reputation: 1166

try this- This will remove empty arrays as well inside array! 

$array['recaptcha_response_field'] = array(
   'name'=>'name1',
   'email'=>'email1',
   'empty'=>''
);
$array['terms'] = array(
   'name'=>'name2',
   'email'=>'email2',
   'empty'=>''
);

$array['terms2'] = array();


$array= array_filter(array_map('array_filter', $array));

print_r($array);

OUTPUT-Array
(
    [recaptcha_response_field] => Array
        (
            [name] => name1
            [email] => email1
        )

    [terms] => Array
        (
            [name] => name2
            [email] => email2
        )

)

Upvotes: 15

Hardik Thaker
Hardik Thaker

Reputation: 3078

Use array_filter function to remove an element from array. To identify the null elements fire recursive loop. hope it will work !

Upvotes: 0

Florian Doyen
Florian Doyen

Reputation: 160

$array = array(array('foo','bar'), array('hi',''), array('',''), array('','hello')); 
$array = array_filter(array_map('array_filter', $array));
print_r($array);

will show :

Array ( [0] => Array ( [0] => foo [1] => bar ) [1] => Array ( [0] => hi ) [3] => Array ( [1] => hello ) )

Upvotes: 2

Shankar Narayana Damodaran
Shankar Narayana Damodaran

Reputation: 68486

Use a simple foreach with array_filter and count as the call-back function.

foreach($arr as $k=>&$arr)
{
    array_filter($arr,'count');
}
print_r($arr);

Working Demo

Upvotes: 1

Related Questions