By Elizabeth Naramore

This replace to a Wrox bestseller dives in and publications the reader during the whole means of growing dynamic, data-driven websites utilizing the open resource "AMP" version: Apache internet server, the MySQL database method, and the personal home page scripting language. The group of professional authors covers Hypertext Preprocessor scripting, database administration, safety, integration, and e-commerce capabilities and springs whole with an invaluable syntax reference.

  • Showcases 3 absolutely practical website examples, with implementations for either home windows and Linux, that readers can contain into their very own initiatives
  • Updates comprise a brand new bankruptcy on PHP5 good points and capabilities, a brand new instance site software, and updates to PHP5 in the course of the textual content

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Extra info for Beginning PHP5, Apache, and MySQL Web Development

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Display_errors Determines whether or not errors will be printed. Leave this feature on while you develop your site and you learn PHP, but once the site is ready to go live, we recommend that this setting be switched to “off” for security purposes. log_errors Allows errors to be written into a log file for future reference. ” error_log Points to the name of your PHP error log file. variables_order Determines the order in which variables are registered. The default is EGPCS, which translates into Environment, GET, POST, COOKIE, and Built-in variables.

Php program. The text after the URL is called the query string. id=12345&lang=en This asks to retrieve the file with an ID of “12345” and the language presumably equal to “en,” for English. There are a few disadvantages to passing variables through a URL: ❑ Everyone can see the values of the variables, so passing sensitive information isn’t really very secure using this method. ❑ The user can change the variable value in the URL, leaving your site potentially open to showing something you’d rather not show.

Try It Out Using Constants In this exercise, you’ll see how you can use constants in your program. 1. > 2. php and open it in your browser. You should see the text shown in Figure 2-3. Figure 2-3 How It Works By defining the constant known as FAVMOVIE, you have set the value as “The Life of Brian,” which can be recalled and displayed later on. Although this constant can’t be changed or reset throughout your script, it is available for use by any part of your script. Overview of Variables Unlike constants, variables are obviously meant to be variable — they are meant to change or be changed at some point in your program.

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