Understanding PHP Data Types
Variables can store data of different types, and different types of data can do different things. For example, you can add variables whose values are numbers [more…]
Building SQL Queries
SQL is almost English; it's made up largely of English words, put together into strings of words that sound similar to English sentences. In general (fortunately), you don't need to understand any arcane [more…]
Troubleshooting a PHP Script
You just can't write scripts without making certain mistakes. The trick is to train yourself to recognize them, roll your eyes, say, "Not again," and just fix them. One error message that you'll see many [more…]
Setting Up Your Computer for PHP and MySQL Web Site Development
To use your local computer to develop your Web site, you must install a Web server, PHP, and MySQL. PHP and MySQL are free to download and use. [more…]
Considering the Various Uses for the PHP Scripting Language
PHP is a general-purpose language that can be used to write general-purpose scripts. Scripts are computer files containing instructions in the PHP language that tell the computer to do things, such as [more…]
Keeping Up with PHP and MySQL Changes
PHP and MySQL are open source software. If you've used only software from major software publishers — such as Microsoft, Corel, or Adobe — you'll find that open source software is an entirely different [more…]
