So using SimpleXML in PHP is possibly one of the worst hells of typecasting and data extraction procedures one can encounter, or close to it 🙂 But more the point, you don’t need to walk down that road alone, enter JSON.
In the simplest of ways, this will typically get you something useful:
$pvar = json_decode ($xml);
(Where $xml is a SimpleXML-type object) This returns a “slightly easier to manage” PHP array.
If you want an associative array, do this:
$pvar = json_decode ($xml, true);
To get it back to JSON, you simply use:
$json = json_encode ($pvar).
You may need to handle XML data, but you don’t necessarily need to work with it in XML form inside your application. The above examples may not work fully for you if you have to deal with “foreign” files or clean the input data prior to conversion, but you get the idea.
This is, obviously, obvious to many. It’s a lifesaver for others 🙂
Using jQueryMobile for a fairly lightweight “mobile site”, I wonder what all you experts say about selection sets. A (long) list of countries for example. To prevent excessive delays, I now split country selection in two screens. The first one shows A-Ö (A-Z for you English-speaking people), if I tap on B, the next screen shows a list of countries starting with B. Hitting the back button brings me back to A-Ö (A-Z), selecting a country takes me to.
It feels right, and it doesn’t transfer massive amounts of data that a) isn’t used half of the time, and b) doesn’t take time to render on slower mobile devices.
I’m not too concerned with database performance on the server for this particular selection set since the SQL query is static and resides in the cache 99.5% of the time.
The Zortech C/C++ compiler was truly awesome when it first appeared, and it got better. When it was released for the OS/2 operating system, it was a welcome addition to the rather “skinny” collection of development tools available for that environment at the time.