Counting specific arrays?

[duckduckgoose]

If I have an array that looks like this:

Array ( [Name0] => Doe [Age0] => Array ( [0] => 23 [1] => 28 [2] => 32 [3] => 11 [4] => 9) 
	[Name1] => Smith [Age1] => Array ( [0] => 7 [1] => 8 [2] => 9 ) 
	[Name2] => Jones [Age2] => Array ( [0] => 54 [1] => 42 ) 
	[submit] => Submit 
)

And I want to count only the [Name(x)] arrays (so that the output would be 3), how would I do that?

I looked at count() but that counts the [Age] and [submit] also. Thanks.

[NogDog]

You could do something like:

$count = 0;
foreach($array as $key => $val)
{
   if(strpos($key, 'Name') === 0)  // must use ===, not ==
   {
      $count++;
   }
}