Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com PHP jQuery Cookbook Over 60 simple but highly effective recipes to create interactive web applications using PHP with jQuery Vijay Joshi BIRMINGHAM - MUMBAI Do wn lo ad f ro m Wo w! e Bo ok < ww w. wo we bo ok .c om > Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com PHP jQuery Cookbook Copyright © 2010 Packt Publishing All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews. Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book. Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information. First published: December 2010 Production Reference: 1081210 Published by Packt Publishing Ltd. 32 Lincoln Road Olton Birmingham, B27 6PA, UK. ISBN 978-1-849512-74-9 www.packtpub.com Cover Image by Vinayak Chittar (vinayak.chittar@gmail.com) Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Credits Author Vijay Joshi Reviewers Anis Ahmad Md. Mahmud Ahsan Joe Wu Shameemah Kurzawa Acquisition Editor Chaitanya Apte Development Editor Neha Mallik Technical Editors Mohd. Sahil Hithesh Uchil Editorial Team Leader Aanchal Kumar Project Team Leader Ashwin Shetty Project Coordinator Michelle Quadros Proofreader Mario Cecere Indexer Hemangini Bari Production Coordinator Aparna Bhagat Cover Work Aparna Bhagat Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com About the Author Vijay Joshi is a programmer with over six years of experience on various platforms. He discovered his passion for open source four years ago when he started playing with PHP on a hobby project after completing his Masters in Computer Applications. Vijay is a professional web developer now and prefers writing code ONLY in open source (but that does not always happen, unfortunately!). He switches hats as needed—he is full-time lead programmer at Philogy, independent consultant for a few selected companies where he advises them on a variety of Internet-based initiatives, and still remains an active blogger at http://vijayjoshi.org. Besides his work, he enjoys reading, trekking, and sometimes getting obsessed with tness. Writing a book is a long and complicated task which requires the support and coordination of many people. I am thankful to the entire team at Packt, especially Michelle, Chaitanya, and Neha for being so cooperative and patient with me. This book is dedicated to all open source developers, contributors, and enthusiasts around the world who have made PHP and jQuery the leading programming tools in their niche. A big thank you to you guys. I am feeling both proud and excited to be able to contribute to the community that gave me so much to learn. On a personal note, I would like to thank my parents, my brother Ajay, and Sheethal for their support and encouragement. A special thanks to Ravindra Vikram Singh for helping me get started on this project. Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com About the Reviewers Md. Mahmud Ahsan graduated in Computer Science & Engineering from the International Islamic University Chittagong (IIUC) in Bangladesh. He is a Zend Certied Engineer and expert in developing web applications, Facebook applications, Mashup applications, and iPhone-native applications. Besides his full time job, he blogs at http://thinkdiff.net and writes articles on different technologies, especially Facebook applications development. He lives in Bangladesh with his wife Jinat. Currently, Mahmud works as a Software Engineer (remote developer) in i2we inc. (867 Avalon, Lafayette, CA) where he develops social web applications using PHP, MySQL, JavaScript, Zend Framework, CodeIgniter, jQuery, and Mashup APIs. He also leads various small to medium level projects. Mahmud is also an Indie iPhone application developer and publishes his own applications at http://ithinkdiff.net. He was a technical reviewer of the Zend Framework 1.8 Web Application Development book by Packt Publishing. I’m very grateful to my father who bought a computer for me in 2001. Since then, I have loved programming and working with various technologies. Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Joe Wu is a full-time Senior PHP Web Developer, and has been in the industry since 2005. He has worked on various projects of all sizes and is familiar with most of the open source technologies surrounding PHP web development. Joe is always enthusiastic about new and upcoming technologies and is keen to learn and pick up new skill-sets wherever possible and utilize them in his current or future projects. He is also keen to learn about new opportunities and innovative ideas out there, and believes that the market is always wide open for new and upcoming innovations to improve our way of living. Aside from all the technological computer work, Joe is a professional badminton player and manages to somehow t a near full-time training schedule together with his full-time job. Joe's best ranking of 59th in the world in singles and the attendance of the Commonwealth Games Delhi 2010 means that he has equally as much experience in badminton and web developing. Aside from all the endeavors, Joe also works for his own company (with his business partner) to put his skills and experience to good use and to help anyone who needs assistance with web development. Wackyinnovation (www.wackyinnovation.com) promotes the concept of always moving forward and coming up with and utilizing new technologies and ideas. Their always enthusiastic and can-do attitude ensures jobs are done to perfection with an innovative edge on their competitors. Shameemah Kurzawa has been programming since she was at high school. Being motivated to be a Systems Analyst, she pursued both undergraduate and postgraduate studies in Business Information System and Software Engineering, respectively. She has been working as a Web Developer/Analyst for the past ve years, for a renowned company SBS (Special Broadcasting Service) in Australia. Besides work, she enjoys spending her time with her family (she is the mum of a little two year old baby boy) and enjoys travelling as well as investigating new technologies. I would like to thank my husband, my son, and the Packt Publishing team for their support and understanding in reviewing this book. Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com www.PacktPub.com Support les, eBooks, discount offers, and more You might want to visit www.PacktPub.com for support les and downloads related to your book. Did you know that Packt offers eBook versions of every book published, with PDF and ePub les available? You can upgrade to the eBook version at www.PacktPub.com and as a print book customer, you are entitled to a discount on the eBook copy. Get in touch with us at service@packtpub.com for more details. 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Simply use your login credentials for immediate access.    Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Table of Contents Preface 1 Chapter 1: Handling Events with jQuery 7 Introduction 7 Executing functions when page has loaded 8 Binding and unbinding elements 9 Adding events to elements that will be created later 14 Submitting a form with jQuery 16 Checking for missing images 18 Creating the select/unselect all checkboxes functionality 21 Capturing mouse events 25 Creating keyboard shortcuts 28 Displaying user selected text 31 Dragging elements on a page 36 Chapter 2: Combining PHP and jQuery 41 Introduction 41 Fetching data from PHP using jQuery 43 Creating a query string automatically for all form elements 47 Detecting an AJAX request in PHP 50 Sending data to PHP 52 Aborting AJAX requests 56 Creating an empty page and loading it in parts 59 Handling errors in AJAX requests 63 Preventing browser from caching AJAX requests 67 Loading JavaScript on demand to reduce page load time 68 Chapter 3: Working with XML Documents 73 Introduction 73 Loading XML from les and strings using SimpleXML 76 Accessing elements and attributes using SimpleXML 79 Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com [...]... removing tabs on the fly Chapter 8, Data Binding with PHP and jQuery, explains, in detail, how a database can be used along with PHP and jQuery Examples included in this chapter will explain how to fetch data from the database and use it in web forms Chapter 9, Enhancing your Site with PHP and jQuery, teaches you some advanced techniques of PHP and jQuery It will show how to overcome browser restrictions... Chapter 1, Handling Events with jQuery, helps you understand jQuery' s cross-browser event handling methods You will learn to work with keyboard and mouse events Advance event handling topics, such as dragging and keyboard shortcuts are also discussed Chapter 2, Combining PHP and jQuery, lists several ways of sending AJAX requests using jQuery and also describes how PHP responds to such requests This... with XML Documents, explains working with XML files in PHP as well as jQuery Recipes will describe how to read, write, and modify XMLs using DOM and SimpleXML extensions of PHP Parsing XML with jQuery is also discussed Chapter 4, Working with JSON, discusses JSON in detail You will be shown how to read and write JSON data in PHP, and also explore jQuery' s inbuilt capabilities of parsing JSON Chapter... a new meaning to web applications PHP on the server side and jQuery on the client side (browser) are a killer combination for developing interactive web applications PHP is the leading language of choice among web developers and jQuery is now used on more than one-third of the top 1000 sites on the internet and is the most widely-used library One thing that PHP and jQuery have in common is that they... book is for This book is for PHP and jQuery developers who just know the basics of these two and want to use PHP and jQuery together to create rich internet applications It provides a large number of examples in each chapter that will take you from being a basic developer to a pro by giving step-by-step instructions for each task in developing web applications using PHP and jQuery Conventions In this... auto-suggest functionality to a textbox Creating a tag cloud Introduction Sending cross-domain requests using server proxy Making cross-domain requests with jQuery Creating an endless scrolling page Creating a jQuery plugin Displaying RSS feeds with jQuery and PHP Introduction Inspecting elements Editing HTML and CSS Debugging JavaScript 229 230 236 241 247 252 258 266 273 274 280 286 291 296 301 303 305 307... Modifying an XML using DOM extension Parsing XML with jQuery 83 88 92 94 98 Chapter 4: Working with JSON 103 Chapter 5: Working with Forms 119 Chapter 6: Adding Visual Effects to Forms 159 Chapter 7: Creating Cool Navigation Menus 193 Introduction Creating JSON in PHP Reading JSON in PHP Catching JSON parsing errors Accessing data from a JSON in jQuery Introduction Adding input fields dynamically in... (or another web server), PHP (version 5.0 or above), and MySQL installed on your system to be able to run the examples in this book You can install them all at once using software such as WampServer or you can install them separately jQuery (version 1.3.2 or higher) will also be required In terms of technical proficiency, this book assumes that you have working knowledge of PHP, jQuery, HTML, and CSS... 216 221 Download from Wow! eBook Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Table of Contents Chapter 8: Data Binding with PHP and jQuery 229 Chapter 9: Enhancing your Site with PHP and jQuery 273 Appendix: Firebug 301 Index 311 Introduction Fetching data from a database and displaying it in a table format Collecting data from a form and saving to a database... dynamically in a form Searching for user-inputted string in a page Checking for empty fields using jQuery Validating numbers using jQuery Validating e-mail and website addresses using regular expressions Displaying errors as user types: Performing live validation Strengthening validation: validating again in PHP Creating a voting system Allowing HTML inside text areas and limiting HTML tags that can be . Combining PHP and jQuery 41 Introduction 41 Fetching data from PHP using jQuery 43 Creating a query string automatically for all form elements 47 Detecting an AJAX request in PHP 50 Sending data to PHP. Unregistered Version - http://www.simpopdf.com PHP jQuery Cookbook Over 60 simple but highly effective recipes to create interactive web applications using PHP with jQuery Vijay Joshi BIRMINGHAM - MUMBAI Do. Site with PHP and jQuery, teaches you some advanced techniques of PHP and jQuery. It will show how to overcome browser restrictions like cross-domain requests. You will learn to create a jQuery