Find empty array indexes function - php

Question

I am checking array values empty or not like following:
Long format:
$empty = array();
foreach($array as $value)
if(empty($value)) $empty[] = $value;
Expected Function:
$empty = array_empty_values($array);
Is there any function like array_empty_values() that find empty array indexes?

Answer 1

If you want to check and remove the empty array element you can check this function in php array_filter()
array_filter accepts an array as input and removes all elements which are equal to null / 0 / flase

Answer 2

Use array_filter php built-in function
function filter_empty($var) {
return empty($var);
}
$result_array = array_filter($your_array, "filter_empty");
$your_array = array(1,'2','3',false,'');
$result_array = array_filter($your_array, "filter_empty");
echo print_r($result_array, true);
will print
Array
(
[3] =>
[4] =>
)
If you need only indexes you can use array_keys built-in function
echo print_r(array_keys($result_array), true);
that will print
Array
(
[0] => 3
[1] => 4
)

Answer 3

You need an array with the keys, not with the values. because the values are empty.
/**
* Get keys of empty array values
* #param array $array The array to check.
* #return array The keys of the empty values.
*/
array_empty_values($array) {
$empty = array();
foreach($array as $key => $value) {
if(empty($value)) {
$empty[] = $key;
}
}
return $empty;
}