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The Definitive Guide to Drupal 7 by Károly Négyesi, Claudina Sarahe, Dani Nordin, Ed Carlevale, Benjamin Melançon, Amye Scavarda, Ryan Szrama, Kay VanValkenburgh, Brian Travis, Greg Anderson, Robert Douglass, Roy Scholten, Peter Wolanin, Susan Stewart, Mike Gifford, Forest Mars, Sam Boyer, Florian Lorétan, Allie Micka, Jake Strawn, Stefan Freudenberg, Dmitri Gaskin, Bojhan Somers, Albert Albala, George Cassie, Kasey Qynn Dolin, Jacine Luisi, Dan Hakimzadeh, Robin Monks, Nathaniel Catchpole, Stéphane Corlosquet, Mike Ryan, Michelle Lauer, Greg Stout

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C H A P T E R  30

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Under the Hood: Inside Drupal When It Displays a Page

by Stefan Freudenberg

The moment a web browser requests a page, Drupal begins running a complex series of steps that result in a fully rendered page being returned to the browser. With every page request, Drupal has to do those same calculations, so understanding them is key to making the best development decisions for your modules or sites.

In this chapter you will learn what happens when a Drupal URL is requested, for instance, http://definitivedrupal.org/node/84. Chapter 29 covered how the URL is sorted out by the web server to become index.php?q=node/84. In this chapter, ...

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