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Many successful programmers know more than just a computer language. They also know how to think about solving problems. They use "computational thinking": breaking a problem down into segments that lend themselves to technical solutions. Code Clinic is a series of six courses where lynda.com authors solve the same problems using different programming languages. Here, David Powers works with PHP.
Each month, David will introduce a new challenge and provide an overview of his solution in PHP, explaining how he broke the problem up into logical components, and revealing the difficulties he encountered. Challenges will include topics such as statistical analysis, searching directories for images, and accessing peripheral devices.
Visit other courses in the series to see how to solve the exact same challenge in languages like C#, C++, Java, Python, and Ruby. And check back every month for new challenges.
If you're a subscriber to the lynda.com online training library, you can download the exercise files for code clinic. I've got them here on my desktop, so if I open that folder, inside there is a folder for problem one, and inside problem one are separate folders to accompany each video. Each of these folders contains all the files that you need for that video. If I open one of them, there are three files in here. The first one, process_years.php, is the file that you'll need at the beginning of the video.
But when changes are made to a file during the video, a second version with end appended to the name, shows what it will look like at the end of the video. Sometimes, to save time, I provide snippets of code in text files for you to copy and paste into your working file. Because PHP code needs to be parsed by a web server, you'll need to copy the files into the root folder of a PHP enabled server. I'm using, a local-testing server. And I've created a folder called, phpclinic, inside the server root.
So, let's go and have a look at phpclinic and inside there, I'll create a separate folder for each problem. So, here is problem one. And I've created all of the files in the root of that folder. Occasionally, the exercise files will contain everything you need to follow along. For example, in problem one, you need to download the contents of the raw data folder directly from an external website. But that's the exception rather than the rule. And if you need help setting up a PHP testing environment, check out David Gassner's course, Installing Apache, MySQL, and PHP, here in the lynda.com online training library.
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