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332 CHAPTER 9 ■ PERFORMING FORM VALIDATION WITH REGULAR EXPRESSIONS Figure 9-19. Validating the hour section of the date string To validate the minutes, you match a colon and exactly two digits: /^(\d{4}(-\d{2}){2} (\d{2})(:\d{2}))/ (see Figure 9-20). Figure 9-20. Validating the minutes section of the date string Finally, repeat the pattern for the minutes to match the seconds, and then use the dollar sign modifier to match the end of the string: /^(\d{4}(-\d{2}){2} (\d{2})(:\d{2}){2})$/ (see Figure 9-21). Figure 9-21. Validating the seconds section of the date string and completing the pattern
CHAPTER 9 ■ PERFORMING FORM VALIDATION WITH REGULAR EXPRESSIONS Armed with this regex pattern, you can now validate the date input in your application. Adding a Validation Method to the Calendar Class To validate the date string, you will add a new private method to the Calendar class called _validDate(). This method will accept the date string to be validated, then compare it to the validation pattern using preg_match(), which returns the number of matches found in the given string. Because this particular pattern will only match if the entire string conforms to the pattern, a valid date will return 1, while an invalid date will return 0. If the date is valid, the method will return TRUE; otherwise, it will return FALSE. Add this method to the Calendar class by inserting the following bold code into class.calendar.inc.php:
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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
Page 369 and 370: over, then returns it to its origin
Page 371 and 372: CHAPTER 10■ EXTENDING JQUERY ■
Page 373 and 374: Defines default values for the plug
Page 375 and 376: }); // Loads the event data from th
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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