一个数字列表，同时剥离除数字之外的所有内容

I have a list of numbers like this:

123-4-5679 tha
546-5465-7 dsf
98-4564-64 ds8

I want to explode into it's own value while striping everything but the numbers. I am doing but it seems to keep everything but it does give me a value per line

$pn = preg_replace("//", "
", preg_replace("/
/", "
", $_POST['phone']));
$phone_numbers = explode("
", $pn);

You can also do it with one quick line in regex.

preg_match_all(":([0-9-]+):mi", $_POST["phone"], $match);

Here's an example

Edit: To remove hyphens iterate through the results and replace the hyphens with an empty string

preg_match_all(":([0-9-]+):mi", $_POST["phone"], $matches);

// remove extra match array
$matches = array_shift($matches);

foreach( $matches as & $match )
{
   $match = preg_replace(":-:", "", $match);
}

Updated example

Ok am i missing somethins?

$phone = explode(' ', $_POST['phone']);
$phone_number = $phone[0];

Isn't this working?

I'd strip everything but digits and newlines:

$cleaned = preg_replace("/[^0-9
]/", "", $_POST['phone']);

And then explode it:

$numbers = explode("
", $cleaned);

Keep all numbers, match everything else but the line-separators:

~(?![\d-]+).*~

Usage in PHP to replace each match with an empty string

$numbers = preg_replace("~(?![\d-]+).*~", '', $phone);

Result:

123-4-5679
546-5465-7
98-4564-64