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98 CHAPTER 3 ■ OBJECT-ORIENTED PROGRAMMING } public function __destruct() { echo 'The class "', __CLASS__, '" was destroyed.'; } public function __toString() { echo "Using the toString method: "; return $this->getProperty(); } public function setProperty($newval) { $this->prop1 = $newval; } public function getProperty() { return $this->prop1 . ""; } // Create a new object $obj = new MyClass; // Output the object as a string echo $obj; // Destroy the object unset($obj); // Output a message at the end of the file echo "End of file."; ?> In this case, attempting to convert the object to a string results in a call to the getProperty() method. Load the test script in your browser to see the result: The class "MyClass" was initiated! Using the toString method: I'm a class property! The class "MyClass" was destroyed. End of file.
CHAPTER 3 ■ OBJECT-ORIENTED PROGRAMMING ■ Tip In addition to the magic methods discussed in this section, several others are available. For a complete list of magic methods, see the PHP manual page at http://us2.php.net/manual/en/language.oop5.magic.php. Using Class Inheritance Classes can inherit the methods and properties of another class using the extends keyword. For instance, to create a second class that extends MyClass and adds a method, you would add the following to your test file:
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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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Page 105 and 106: $obj = new MyClass; var_dump($obj);
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Page 111 and 112: $obj = new MyClass; // Get the valu
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Page 139 and 140: # # DocumentRoot: The directory out
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Page 143 and 144: } ?> } } } CHAPTER 4 ■ BUILD AN E
Page 145 and 146: ■ Note For the sake of brevity, D
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Page 149 and 150: } ?> } include_once $filename; CHAP
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148 CHAPTER 4 ■ BUILD AN EVENTS C
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168 CHAPTER 5 ■ ADD CONTROLS TO C
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200 CHAPTER 6 ■ PASSWORD PROTECTI
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P A R T 3 ■ ■ ■ Combining jQu
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236 CHAPTER 7 ■ ENHANCING THE USE
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264 CHAPTER 8 ■ EDITING THE CALEN
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P A R T 4 ■ ■ ■ Advancing jQu
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312 CHAPTER 9 ■ PERFORMING FORM V
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C H A P T E R 10 ■ ■ ■ Extend
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$.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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