Break down a url string into variables?

I have created this form:

<form action="/import.php" method="post">
<p><input type="text" name="site_import" id="site_import" value="" /><input type="submit" value="Import" /></p>
</form>

Code (markup):

Now, if I enter a url into the box:

http://www.awebsite.com/?apples=1&oranges=2&pears=3

Code (markup):

I want the form to make a file that has this in it:

<?php
$apples = "1";
$oranges = "2";
$pears = "3"
?>

Code (markup):

How can I do this?

 

This is what I have so far, but it's not working out to good:

<?php
$pieces = explode('&', $_POST['site_import']);
  foreach ($pieces as $p) {
    list($name, $value) = explode('=', $p);
    $_POST['$name'] = $value;
		echo "\$".$name."=".$value."\n\n";
  }
?>

Code (markup):

 

$urlParts = explode('&', $_SERVER['QUERY_STRING']);

foreach ($urlParts as $urlPart)
{
    $parsedPart = explode('=', $urlPart);

    global $$parsedPart[0];

    $$parsedPart[0] = $parsedPart[1];
}

echo "Apples: $apples <br/>";

echo "Oranges: $oranges <br/>";

PHP:

index.php?oranges=1&apples=3

Code (markup):

Not one of the cleanest ways of doing it but you should get the idea.

 

There are a few built-in functions for this. One grabs the querystring from your URL, the other parses the querystring.

http://www.php.net/manual/en/function.parse-url.php
http://php.net/manual/en/function.parse-str.php