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up vote 7 down vote favorite
2

I've been looking a lot of answers, but, none of them are working for me:

I have this array under $quantities variable. If i print_r, i got this:

Array
(
    [10] => Array
        (
            [25.00] => 1
        )

    [9] => Array
        (
            [30.00] => 3
        )

    [8] => Array
        (
            [30.00] => 4
        )

    [12] => Array
        (
            [35.00] => 
        )

    [1] => Array
        (
            [30.00] => 
        )

    [2] => Array
        (
            [30.00] => 
        )
)

But, im looking for a way to remove those with empty values like [12] [1] and [2] and keep everything else.

Array
(
    [10] => Array
        (
            [25.00] => 1
        )

    [9] => Array
        (
            [30.00] => 3
        )

    [8] => Array
        (
            [30.00] => 4
        )

)

Thanks. Sorry if this looks kinda simple, im a newbie and i dont know how to do it. Tried a lot of the functions on the official php docs and none of them worked.

I've used this one:

function array_filter_recursive($array, $callback = null) {
    foreach ($array as $key => & $value) {
        if (is_array($value)) {
            $value = array_filter_recursive($value, $callback);
        }
        else {
            if ( ! is_null($callback)) {
                if ( ! $callback($value)) {
                    unset($array[$key]);
                }
            }
            else {
                if ( ! (bool) $value) {
                    unset($array[$key]);
                }
            }
        }
    }
    unset($value);

    return $array;
}

But i get this:

Array ( [10] => Array ( [25.00] => 1 )

[9] => Array
    (
        [30.00] => 3
    )

[8] => Array
    (
        [30.00] => 4
    )

[12] => Array
    (
    )

[1] => Array
    (
    )

[2] => Array
    (
    )

)

Is almost what i want, but, i would like to remove [12] [1] and [2] arrays.

share|improve this question
    
Consider using var_dump() instead to show us the array contents. – Ja͢ck May 14 '13 at 11:57
up vote 9 down vote

Bit late, but may help someone looking for same answer. I used this very simple approach to;

  1. remove all the keys from nested arrays that contain no value, then
  2. remove all the empty nested arrays.
$postArr = array_map('array_filter', $postArr);
$postArr = array_filter( $postArr );
share|improve this answer
    
Worked for me !!!! Thanks!!!! – TharinduLucky Dec 1 '15 at 14:41
up vote 4 down vote

Not sure if this is exactly what your looking for.

function array_remove_null($array) {
    foreach ($array as $key => $value)
    {
        if(is_null($value))
            unset($array[$key]);
        if(is_array($value))
            $array[$key] = array_remove_null($value);
    }
    return $array;
}
share|improve this answer
    
Hello Jason, thanks for your reply. Unfortunately, it doesn't work for what i need. As Paul answer, it returns the same as the original question. – Richard-MX Apr 18 '12 at 17:44
1  
Thank you this helped me – Mansoorkhan Cherupuzha Dec 10 '14 at 5:42
up vote 3 down vote

The following function worked for my case. We can use a simple recursive function to remove all empty elements from the multidimensional PHP array:

function array_filter_recursive($input){
    foreach ($input as &$value){
        if (is_array($value)){
            $value = array_filter_recursive($value);
        }
    }
    return array_filter($input);
}

Then we just need to call this function:

$myArray = array_filter_recursive($myArray);
share|improve this answer
up vote 2 down vote

use array_map() for filter every array in $array:

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

Here's demo

share|improve this answer
up vote 2 down vote 
$newArray = array_map('array_filter', $array);

This sintax it's work and very help full thank's guys ..

share|improve this answer
up vote 1 down vote

Just call array_filter one more time. That will filter out all the empty values from your result:

// $arr contains your multi dimensional array

$arr = array_filter_recursive($arr);
$arr = array_filter($arr);
share|improve this answer
    
Not working my friend. It returns the same result. – Richard-MX Apr 18 '12 at 17:40

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