Advanced PHP for Web Professionals by Christopher Cosentino

By Christopher Cosentino

Take your Hypertext Preprocessor programming abilities to the following point, with this hands-on, example-rich educational! In complicated personal home page for net pros, best-selling personal home page writer Christopher Cosentino brings jointly dozens of robust new strategies for development critical internet functions. find out how to deal with periods extra successfully, create higher kinds, improve customized errors handlers, construct database-independent net purposes with PEAR::DB, parse XML documents, authenticate clients through database question, construct cross-platform purchaser apps with PHP-GTK, and masses extra!

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Extra info for Advanced PHP for Web Professionals

Sample text

Body> 14.

View Your Settings

15. >, 16. > 17.

Your settings:

    18. $key: $value

    "); 26. } 27. > 28.

29. 30. Script 2-3. php Line-by-Line Explanation LINE DESCRIPTION 2 Start the session or continue an existing session. 4–13 Print out the beginning of the HTML page. 14–17 Greet the users and show some of their current settings.

Name = "Spike"; 10. } 11. } 12. > 13. > 14. > 15. php method=post> 16.
17. 18.

Script 2-4. php Line-by-Line Explanation LINE DESCRIPTION 2 Start the session or continue an existing session. 3–5 Check to see if the $destroy variable is set. If it is, then the user has pressed the "Destroy" button. 6–10 If $destroy has not been set, then register a session variable named $name and assign that variable the value "Spike".

If a $PHPSESSID is found by the function, either by a cookie or a GET variable, then the function resumes the current session and the page has access to any variables that have been registered to the session. Once you have started the session, you need to register some variables with it. The session will not track variables until they have been registered using the session_register() function: session_register(STRING); The STRING argument to session_register() should be the name of the variable that you want to register with the session so that it may be accessed across any session-enabled pages.

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