Read e-book online Beginning PHP 6 PDF

By Matt Doyle

ISBN-10: 0470413964

ISBN-13: 9780470413968

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Read Online or Download Beginning PHP 6 PDF

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Additional resources for Beginning PHP 6

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Because of the low precedence of the and and or operators, it’s generally a good idea to stick with && and || unless you specifically need that low precedence. Constants You can also define value-containers called constants in PHP. The values of constants, as their name implies, can never be changed. Constants can be defined only once in a PHP program. Constants differ from variables in that their names do not start with the dollar sign, but other than that they can be named in the same way variables are.

Assignment) and xor or 47 Part II: Learning the Language PHP has many more operators than the ones listed here. net/operators. You can affect the order of execution of operators in an expression by using parentheses. Placing parentheses around an operator and its operands forces that operator to take highest precedence. So, for example, the following expression evaluates to 35: ( 3 + 4 ) * 5 As mentioned earlier, PHP has two logical “and” operators (&&, and) and two logical “or” operators (||, or).

It can be a tedious process, because you have to wait for the script to upload every time you want to test your changes, but it’s better than nothing! Cr eating Y our First Script Now that you have successfully installed PHP on your computer, or gained access to another computer running PHP, it’s time to start writing your first proper PHP script. ” in the browser window. Once you have this script working, you’ll learn how to enhance it in various ways. php. You should see something like Figure 2-12.

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Beginning PHP 6 by Matt Doyle

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