What function in PHP can be used to separate individual numbers from a variable without a separator between them?

To separate individual numbers from a variable without a separator between them in PHP, you can use the `str_split()` function. This function will split a string into an array of individual characters, effectively separating the numbers. You can then loop through the array to access each individual number.

$number = 12345;
$numbersArray = str_split($number);

foreach ($numbersArray as $num) {
    echo $num . " ";
}