If the REQUEST_METHOD is not equal to POST, a redirect message is displayed to the user.If the REQUEST_METHOD contained in $_SERVER is equal to POST, processing passes to the addGuestBookEntry function on line 120.Lines 40 to 44 - Check for Valid Form Entry When you type the left parenthesis, Komodo displays a pop-up hint that describes parameters for the function GuestBook. Tip: On line 38, type function GuestBook(. $this->_getData variable calls the _getData function that begins on line 53 when the _getData function is complete, processing returns to line 40.data variable is cleared of any prior value.PHP Declaration and Datafile Line 9 - PHP Declaration You can adjust the display options for language elements in the Preferences dialog box. Tip: Syntax elements are displayed in different colors. A standard HTML header is written to the program output.Ensure that line numbers are enabled in Komodo ( View > View Line Numbers) and that the file guestbook.php is displayed in the Komodo editor. In this step, you will analyze the PHP program on a line-by-line basis. The file opens in the Editor Pane, and a tab at the top of the pane displays the filename. In the Places sidebar, double-click the guestbook.php file. guestbook.php: This PHP program writes data from an HTML form to a data file, then extracts the contents of the data file and formats it as HTML.The following components are included in the PHP Tutorial project file: The tutorial project opens and is displayed in the Places sidebar. Select Help > Tutorials > PHP Tutorial.See Debugging Programs for more information on this Komodo functionality. Debug the program using the Komodo debugger.Run the program and generate HTML output by running the program.Analyzing the PHP Tutorial File, the PHP program included in the PHP Tutorial Project.Open the PHP Tutorial Project and associated files.In addition to providing an overview and working example of PHP, the tutorial introduces Komodo’s CGI Debugging functionality. This tutorial examines a PHP program that implements a form on a website - in this case, a guest book where site visitors can log comments. The tutorial will walk you through a simple program and suggest some resources for further information. You don’t need previous knowledge of PHP.

See the Debugging PHP documentation for installation and configuration instructions. PHP 4.4 or greater is installed on your system.

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