php - Regex to get value of a numeric URL parameter?

Question

In a url like the one below, I'd like to get the value of ProdId. The URL format will always be consistent, as will the parameter name, but the length of the value may change. It will always be numeric.

http://www.example.com/page.php?ProdId=2683322&xpage=2

Using PHP what's the fastest way to get it (I'll be processing 10,000's so speed is an issue)?

Answer 1

PHP has built-in functions for this. Use parse_url() and parse_str() together.

Pieced together from php.net:

$url = 'http://www.example.com/page.php?ProdId=2683322&xpage=2';

// Parse the url into an array
$url_parts = parse_url($url);

// Parse the query portion of the url into an assoc. array
parse_str($url_parts['query'], $path_parts);

echo $path_parts['ProdId']; // 2683322
echo $path_parts['xpage']; // 2