使用PHP检测已安装的iPhone App？
is this possible somehow?
I would like to redirect to different pages depending on whether the user already installed an app or not.
以某种方式可能吗？ p>
我想重定向到不同的页面 取决于用户是否已经安装了应用程序。 p> div>
It is completely impossible for your server to reliably tell whether an app is installed on the client.
(Unless you can associate app users with page viewers by user account)
Not really possible. You can launch the app using the custom URL scheme but the user will get a Safari error dialog if the app isn't installed.
I guess your app could ping the server with some unique session ID when it launched and you could send this back to the web page using Ajax as a success validation.. Seems like a lot of work and pretty fragile.
It may be possible to detect the safari error dialog with some clever JavaScript?
This would be a pretty significant privacy violation. A phishing site, for example, could determine which banks I use by looking for their iPhone apps on my phone. Apple's not going to permit that, let alone make the data available deliberately.