一个数字列表，同时剥离除数字之外的所有内容

Question

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);

Answer 1

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