One of the first questions I receive when I'm doing courses about QT Creator is
After the last article about the iBeacons (iOS SDK and ibeacons, two simple tests), I passed the last couple of weeks studying the iBeacons and then I prepared my first demo to explore interior rooms of a building (like a museum).
While my CakePHP application was running, sometimes I got the following error:
Notice (8): session_start() [function.session-start]: ps_files_cleanup_dir: opendir(/var/lib/php5) failed: Permission denied (13) [CORE/Cake/Model/Datasource/CakeSession.php, line 629]
at first, I tought there was a mistake in my code, then, after studying php session, I noticed that this error was linked to the garbage collector.
After the two posts on how to draw a string into an image with php and PHP: How to draw a string on a transparent/translucent png the time to create a more complex script, to apply a watermark to an image, has come.
In a previous post (how to draw a string into an image with php) I explained how to draw a string on a opaque background image.
This time I want to add transparency to both background and text layers.
Three functions help us to do the work:
The indoor positioning system, that Apple Inc. calls "a new class of low-powered, low-cost transmitters that can notify nearby iOS 7 devices of their presence.", will be the next killer application built by Apple Inc…
These devices can also be used by the Android operating system.
Converting results from a SQL query to JSON format, is an important task if you are developing an iOS application which grab data from your web application.
For this tutorial I'm going to create a new database, named jsontest, in MySQL.