What is the potential issue with using the "each()" function in PHP when upgrading to PHP 8.2?

The potential issue with using the "each()" function in PHP when upgrading to PHP 8.2 is that the function has been deprecated in PHP 7.2 and removed in PHP 8.0. To solve this issue, you should replace the "each()" function with a combination of "current()", "key()", and "next()" functions to iterate over an array.

$array = ['a' => 1, 'b' => 2, 'c' => 3];
reset($array);

while (list($key, $value) = each($array)) {
    echo "Key: $key, Value: $value\n";
}
```

Replace the above code with the following code snippet to fix the issue:

```php
$array = ['a' => 1, 'b' => 2, 'c' => 3];
reset($array);

while (key($array) !== null) {
    $key = key($array);
    $value = current($array);
    echo "Key: $key, Value: $value\n";
    next($array);
}