PHP PCRE的问题

Question

I'm having a problem with PHP PCRE, and I'm used to POSIX, so I'm not too sure about what I'm doing wrong. Basically, this function is matching up to 10 numbers separated by commas. However, it's also matching the string sdf (and probably many others), which I don't see the reason for. Can anyone help me?

$pattern='^\d{0,5},? ?\d{0,5},? ?\d{0,5},? ?\d{0,5},? ?\d{0,5},? ?\d{0,5},? ?\d{0,5},? ?\d{0,5},? ?\d{0,5},? ?\d{0,5},? ?^';

$leftcheck=preg_match($pattern, $leftmodules);
$centercheck=preg_match($pattern, $centermodules);
$rightcheck=preg_match($pattern, $rightmodules);

if(!$leftcheck OR !$centercheck OR !$rightcheck)
{
$editpage = $_SERVER['HTTP_REFERER'].'?&error=1';
die("Location:$editpage");
}

Answer 1

^\d{1,5}(, *\d{1,5}){0,9}$