PHP拆分从函数返回的值

Question

I have this function I am calling in a class. It gets all the phone numbers assigned to a user or company.

foreach($obj as $file) {
$clean_number = preg_replace('/[^0-9]/','',$file['matchrule']);
$clean_number = substr($clean_number, 1);
echo $clean_number;
}

It returns all the values and I see them in this function calling the function above:

$get_numbers_from_domain = $api->_get_numbers($domain);
echo $get_numbers_from_domain;

So the question is, how do I split the values and treat each phone number returned as separate so that I can input them into another function instead of having a long run on of numbers?

The returned value string looks like this: (minus the x's)

8004xxx3048138xxx436

What I have been trying was something like this with no success by adding a "." at the end of my returned numbers.

$NumArray = explode('.', $get_numbers_from_domain);
foreach($NumArray as $num_Array){
    echo $num_Array.'<br>';  
}

Answer 1

$clean_number=array();
foreach($obj as $file) {
$clean_number = preg_replace('/[^0- 9]/','',$file['matchrule']);
$clean_number[]= substr($clean_number, 1);
}
return $clean_number;

So it return the numbers as an array