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330 CHAPTER 9 ■ PERFORMING FORM VALIDATION WITH REGULAR EXPRESSIONS After saving the preceding code, reload http://localhost/regex.php in your browser to see all numeric characters highlighted (see Figure 9-15). Figure 9-15. Matching any numeric character Matching the Date Format To match the date format, start by matching exactly four digits at the beginning of the string to validate the year: /^(\d{4})/ (see Figure 9-16). Figure 9-16. Validating the year section of the date string Next, you need to validate the month by matching the hyphen and two more digits: /^(\d{4}(- \d{2}))/ (see Figure 9-17).
Figure 9-17. Expanding the validate month section of the date string CHAPTER 9 ■ PERFORMING FORM VALIDATION WITH REGULAR EXPRESSIONS Notice that the month and date sections are identical: a hyphen followed by two digits. This means you can simply repeat the month-matching pattern to validate the day using a repetition operator after the group: /^(\d{4}(-\d{2}){2})/ (see Figure 9-18). Figure 9-18. Adding the day part of the date string to the pattern Now match a single space and the hour section: /^(\d{4}(-\d{2}){2} (\d{2}))/ (see Figure 9-19). ■ Note Make sure that you include the space character. The shorthand class (\s) shouldn’t be used because new lines and tabs should not match in this instance. 331
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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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$("p:parent"); [ p, p.foo, p, p#bar
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which returns the following in the
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Selecting Only Enabled or Disabled
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26 CHAPTER 2 ■ COMMON JQUERY ACTI
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C H A P T E R 3 ■ ■ ■ Object-
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$obj = new MyClass; var_dump($obj);
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CHAPTER 3 ■ OBJECT-ORIENTED PROGR
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$obj = new MyClass; // Get the valu
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} public function setProperty($newv
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} } return $this->getProperty(); pu
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Create a new object $newobj = new M
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} } // Create a new object $newobj
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Private Properties and Methods CHAP
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} public function __construct() { e
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*/ CHAPTER 3 ■ OBJECT-ORIENTED PR
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Ease of Implementation CHAPTER 3
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C H A P T E R 4 ■ ■ ■ Build a
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CHAPTER 4 ■ BUILD AN EVENTS CALEN
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# # DocumentRoot: The directory out
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CHAPTER 4 ■ BUILD AN EVENTS CALEN
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} ?> } } } CHAPTER 4 ■ BUILD AN E
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■ Note For the sake of brevity, D
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} ?> CHAPTER 4 ■ BUILD AN EVENTS
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} ?> } include_once $filename; CHAP
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private $_startDay; public function
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138 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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Page 325: P A R T 4 ■ ■ ■ Advancing jQu
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Page 361 and 362: C H A P T E R 10 ■ ■ ■ Extend
Page 363 and 364: $.validDate = function(date, option
Page 365 and 366: Modifying the Initialization Script
Page 367 and 368: Adding Methods to jQuery CHAPTER 10
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Page 371 and 372: CHAPTER 10■ EXTENDING JQUERY ■
Page 373 and 374: Defines default values for the plug
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Page 377 and 378: ■ ■ ■ Index ■ Special Chara
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Page 389 and 390: .die( ) method, 75-76 .error( ) met
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