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132 CHAPTER 4 ■ BUILD AN EVENTS CALENDAR ■ Note Initializing $C as an empty array is a safeguard against any tainted pieces of data being stored in $C and defined as constants. This is a good habit, especially when dealing with sensitive data. Save this file. If you’re not using XAMPP or if you’ve modified the default database credentials, you’ll need to substitute your own host, username, password, and database name in the code. Creating an Initialization File At this point, your database credentials still aren’t stored as constants. You’ll be using an initialization file to handle this. An initialization file collects data, loads files, and organizes information for an application. In this example, it will load and define all necessary constants, create a database object, and set up an automatic loading function for classes. Other functionality will be added later on as it becomes necessary. Create a file called init.inc.php, and place it in the core folder (/sys/core/init.inc.php). Inside, add the following:
} ?> } include_once $filename; CHAPTER 4 ■ BUILD AN EVENTS CALENDAR An automatic loading function is called when a script attempts to instantiate a class that hasn’t been loaded yet. It’s a convenient way to easily load classes into a script on demand. For more information on automatic loading, visit http://php.net/autoload. Creating an Index File to Pull It All Together To see everything in action, modify index.php in the public folder. Inside, simply include the initialization file and instantiate the Calendar class. Next, check if the class loaded properly, and output the object’s structure if so: Once you navigate to http://localhost/, the following message is output: object(Calendar)#2 (6) { ["_useDate:private"]=> NULL ["_m:private"]=> NULL 133
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THE EXPERT’S VOICE ® IN OPEN SOU
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ii Pro PHP and jQuery Copyright ©
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iv Contents at a Glance ■About th
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vi ■ CONTENTS Understanding jQuer
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viii ■ CONTENTS Summary .........
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x ■ CONTENTS ■Chapter 9: Perfor
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xii About the Author ■ Jason Leng
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xiv Acknowledgments I feel like I s
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C H A P T E R 1 ■ ■ ■ Introdu
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CHAPTER 1 ■ INTRODUCING JQUERY Th
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SETTING UP A LOCAL TESTING ENVIRONM
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google.load("jquery", "1.4.2");
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Basic Selectors CHAPTER 1 ■ INTRO
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Only one paragraph in our document
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$(".foo+p"); CHAPTER 1 ■ INTRODUC
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$("p:odd"); [ p.foo, p#bar ] Select
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$("p:parent"); [ p, p.foo, p, p#bar
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which returns the following in the
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Selecting Only Enabled or Disabled
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26 CHAPTER 2 ■ COMMON JQUERY ACTI
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182 CHAPTER 5 ■ ADD CONTROLS TO C
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200 CHAPTER 6 ■ PASSWORD PROTECTI
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P A R T 3 ■ ■ ■ Combining jQu
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236 CHAPTER 7 ■ ENHANCING THE USE
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264 CHAPTER 8 ■ EDITING THE CALEN
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P A R T 4 ■ ■ ■ Advancing jQu
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312 CHAPTER 9 ■ PERFORMING FORM V
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C H A P T E R 10 ■ ■ ■ Extend
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$.validDate = function(date, option
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Modifying the Initialization Script
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Adding Methods to jQuery CHAPTER 10
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over, then returns it to its origin
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CHAPTER 10■ EXTENDING JQUERY ■
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Defines default values for the plug
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}); // Loads the event data from th
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■ ■ ■ Index ■ Special Chara
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■ C Calendar app JavaScript initi
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saving new calendar events in addin
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:eq( ) method, 17, 20, 26-27 equals
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eginning of string, 324 character c
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asic selectors in by class name, 12
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.die( ) method, 75-76 .error( ) met
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.parents( ) method, 33 .parentsUnti
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overview, 328 regex pattern to vali
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