Question

I have an array:

$array = array("1" => "", "2" => "" , "3" => "data1", "4" => "" , "5" => "data2", "6" => "" );

It’s declared with for leaving some empty values.Array can be too long. I want a method to find filled array numbers in PHP.

Answer 1

Check this, will give you all empty array keys

  <?php
      $array = array("1" => "", "2" => "" , "3" => "data1", "4" => "" , "5" => "data2", "6" => "" );
      $new = array_filter($array, 'strlen');
      $result = array_diff($array, $new);
       print_r($result);
    ?>

If you want to remove the empty value keys
use array_filter

    <?php
      $array = array("1" => "", "2" => "" , "3" => "data1", "4" => "" , "5" => "data2", "6" => "" );
      $new = array_filter($array, 'strlen');
      print_r($new);
    ?>