PHP array removal null value function sharing _php instance

For a one-dimensional PHP array, how do I erase an element whose value is empty? The direct method is a foreach loop, one judgment to exclude. But this approach is slightly more complicated, and here's a simple way to share what you see today.

Copy Code code as follows:

/**
* Method Library-array removal null value
* @param string $num numeric value
* @return String
*/
Public Function Array_remove_empty (& $arr, $trim = True) {
if (!is_array ($arr)) return false;
foreach ($arr as $key => $value) {
if (Is_array ($value)) {
Self::array_remove_empty ($arr [$key]);
} else {
$value = ($trim = = True)? Trim ($value): $value;
if ($value = = "") {
Unset ($arr [$key]);
} else {
$arr [$key] = $value;
}
}
}
}

is not a very useful function, I hope you can enjoy.