Download Safari Books Online apps: Apple iOS | Android

Entire Site

Safari Books Online

    Free Trial

    Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.


    Head First jQuery
    Dedication
    A Note Regarding Supplemental Files
    Advance Praise for Head First jQuery
    Praise for other Head First books
     
    How to use this book: Intro
    1. Getting Started with jQuery: Web Page Action
    2. Selectors and Methods: Grab and Go
    3. jQuery Events and Functions: Making Things Happen on Your Page
    4. jQuery Web Page Manipulation: Mod the DOM
    5. jQuery Effects and Animation: A Little Glide in Your Stride
    6. jQuery and JavaScript: Luke jQuery, I Am Your Father!
    7. Custom Functions for Custom Effects: What Have You Done for Me Lately?
    8. jQuery and Ajax: Please Pass the Data
    9. Handling JSON Data: Client, Meet Server
    Webville MegaCorp’s Marketing Department doesn’t know XML
    XML errors break the page
    Collect data from a web page
    What to do with the data
    Format the data before you send it
    Send the data to the server
    Store your data in a MySQL database
    Create your database to store runner info
    Anatomy of an insert statement
    Use PHP to access the data
    Handle POST data on the server
    Connect to a database with PHP
    Use select to read data from a database
    Get data with PHP
    JSON to the rescue!
    jQuery + JSON = Awesome
    A few PHP rules...
    A few (more) PHP rules...
    Format the output using PHP
    Access data in the JSON object
    Data sanitization and validation in PHP
    Your jQuery/Ajax/PHP/MySQL Toolbox
    10. jQuery UI: Extreme Form Makeover
    11. jQuery and APIs: Objects, Objects Everywhere
    A. Leftovers: The Top Ten Things (We Didn’t Cover)
    B. Set Up a Development Environment: Get Ready for the Big Times
    Index
    About the Authors
    Copyright
    • Create BookmarkCreate Bookmark
    • Create Note or TagCreate Note or Tag
    • DownloadDownload
    • PrintPrint
    Share this Page URL
    Help

    9. Handling JSON Data: Client, Meet Server > A few (more) PHP rules...

    A few (more) PHP rules...

    There are a few more rules that will help us get the data we need, format it correctly, and get it onto our web pages.

    Rules for arrays

    1. You can create new arrays using the array keyword, similar to JavaScript.

    2. You can access the array values using the index of the item, in square brackets [ ], like JavaScript. They are also zero-indexed, like JavaScript.

    3. Arrays can also be associative, which means you can use a key to access the item in the array, instead of the index. These are called key/value pairs.

    4. To assign a value to a key in an associative array, you use the => operator.

    <?php
$my_arr2 = array('USA', 'China',
'Ireland');
echo $my_arr2[2]; // Prints "Ireland"

$arr = array("foo" => "bar", 12 => true);
echo $arr["foo"]; // Prints "bar"
echo $arr[12]; // Prints true
?>

      

    You are currently reading a PREVIEW of this book.

                                                                                            

    Get instant access to over
    $1 million worth of books and videos.

      

    Start a Free Trial