PHP Basics - conditions and loops Support
Conditional processing allows you to choose which parts of your code are run depending on certain conditions, such as data entered by a user or results from a database
In this tutorial we look at conditional processing and the different commands available in PHP to perform this. Conditional processing allows you to choose which parts of your code are run depending on certain conditions, such as data entered by a user or results from a database.
In the second part of this tutorial, we move on to look at loops in PHP. We first look at the PHP for loop, which enables you to repeat a section of code a certain number of times, to perform calculations or to display rows of dynamic output. We then look at the other types of loop such as the do loop and do … while loop which come in useful in a range of different situations.
Finally, we look at nested loops, which are loops within a loop. These are extremely useful for creating HTML tables, and have a number of different uses such as laying out photos in an online photo gallery.
Gareth Downes-Powell
Gareth has a range of skills, covering many computer and internet related subjects. He is proficient in many different languages including ASP and PHP, and is responsible for the setup and maintenance of both Windows and Linux servers on a daily basis.
In his daily web development work he uses the complete range of Macromedia software, including Dreamweaver MX, Flash MX, Fireworks MX and Director to build a number of websites and applications. Gareth has a close relationship with Macromedia, and as a member of Team Macromedia Dreamweaver, he has worked closely in the development of Dreamweaver, and was a beta tester for Dreamweaver MX.
On a daily basis he provides support for users in the Macromedia forums, answering questions and providing help on a range of different web related subjects. He has also written a number of free and commercial extensions for Dreamweaver MX, to further extend its capabilities using its native JavaScript API’s or C++.
As a web host, Gareth has worked with a range of different servers and operating systems, with the Linux OS as his personal favourite. Most of his development work is done using a combination of Linux, Apache and MySQL and he has written extensively about setting up this type of system, and also running Apache and MySQL under Windows.