I have been doing a lot of iPhone website development lately.  There are lots of tips and tricks I have found to making websites look proper on these devices.  I’ll separate some of these tricks into different articles.

The HTTP_USER_AGENT for an iPod Touch (my iPod Touch anyway) is:

Mozilla/5.0 (iPod; U; CPU iPhone OS 3_1_3 like Mac OS X; en-us) --->
AppleWebKit/528.18 (KHTML, like Gecko) Version/4.0 Mobile/7E18 Safari/528.16

ipad is:

Mozilla/5.0(iPad; U; CPU iPhone OS 3_2 like Mac OS X; en-us) --->
AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B314 Safari/531.21.10

so in PHP if you just search for “iPhone” in the HTTP_USER_AGENT you can see if it is indeed a small mobile device coming to your website:

if(stripos($_SERVER['HTTP_USER_AGENT'], "iphone") > 0) {
  echo "This is an iphone!";
}
else {
  echo "NOT an iphone!";
}
 

I am working on a project that involves converting video to play on any iPod or other mobile device.  This is a handy reference that tells you what video formats in what size and framerate are supported on which devices:http://www.ilounge.com/index.php/articles/comments/the-complete-guide-to-ipod-video-formats-and-display-resolutions/WinFF is a free video converter program based on FFMpeg for Linux:http://winff.org/html_new/It will convert just about any video format to any other video format.  And its free!

I needed to get an adapter to fit into the Apple Hi-Fi (discontinued) for my iPod Touch. This lists all of the universal adapters for iPod and iPhone:http://support.apple.com/kb/HT1380Hopefully I can get the adapter I need at any apple store.