> I've been able to escape the 'space' character in a variable so it can
> be safely passed through a URL but I'm having trouble finding anything
> that works for escaping the '&' ampsand.
php.net/urlencode
as for your code:
> $topic = "Aerospace & Commercial Space";
>
> $link_value = str_replace("&", '%26', $topic);
> $link_value = str_replace(' ', '%20', $topic);
You are using $topic both times. Your second line should be:
$link_value = str_replace(' ', '%20', $link_value);
-Rasmus
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