How can I detect if an iPhone has a retina display or not? Is there a reliable way? Either pure PHP or preferably Zend Framework way of doing this.
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How can I detect if an iPhone has a retina display or not? Is there a reliable way? Either pure PHP or preferably Zend Framework way of doing this.
You must consider the fact that you are trying to get client side information on the server side.
It would seem that you are unable to detect the display with pure PHP or Zend framework.
It furthermore seems like the UserAgent information from the client, that you might access from PHP is based upon the OS, not the hardware, and thusly does not help you.
You might be interested in reading the following article which much more eloquently and thoroughly explains the issues.
http://www.bdoran.co.uk/2010/07/19/detecting-the-iphone4-and-resolution-with-javascript-or-php/
Good luck!