在php中关闭FIND数组[关闭]

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.

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);
    ?>

Something like this?

$newArray = array();

foreach($array as $key=> $value)
{
   if($value != '')
       $newArray[$key] = $value;
}

print_r($newArray);

I'm not 100% sure about what you want, but I think this might help you. Let me know if this isn't what you wanted.

foreach ($array as $v) {
  if ($v) {
    // this value is not empty
  }
}

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

$array_with_keys = array();


foreach($array as $key=> $value)
{
   if($value != '')
       $array_with_keys[] = $key;
}

print_r($array_with_keys);

Since you want only keys this would return you an array with keys which you can use to update the database using a foreach loop