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Core PHP Programming: Using PHP to Build Dynamic Web Sites by Leon Atkinson

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Algorithms

Whenever we interact with a computer, we are instructing it to perform some action. When you drag an icon into the waste basket on your desktop, you are asking the computer to remove the file from your hard disk. When you write an HTML file, you are instructing the computer in the proper way to display some information. There are usually many incremental steps to any process the computer performs. It may first clear the screen with the color you specified in the body tag. Then it may begin writing some text in a particular color and typeface. As you use a computer, you may not be entirely aware of each tiny step it takes, but you are giving it a list of ordered instructions that you expect it to follow.

Instructions for baking a cake ...

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