Computer Science

Download Beginning Google Maps Applications with PHP and Ajax: From by Michael Purvis, Jeffrey Sambells, Cameron Turner PDF

By Michael Purvis, Jeffrey Sambells, Cameron Turner

Until lately, construction interactive web-based mapping functions has been a bulky affair. This replaced whilst Google published its strong Maps API. Beginning Google Maps functions with Hypertext Preprocessor and Ajax used to be written that can assist you benefit from this know-how on your personal endeavorswhether you’re an fanatic enjoying for enjoyable or a certified construction for revenue. This booklet covers model 2 of the API, together with Google’s new Geocoding service.

Authors Jeffrey Sambells, Cameron Turner, and Michael Purvis get rolling with examples that require not often any code in any respect, yet you’ll quick turn into conversant in many aspects of the Maps API. They exhibit robust equipment for concurrently plotting huge information units, growing your individual map overlays, and harvesting and geocoding units of addresses. You’ll see find out how to organize replacement tile units and the place to entry imagery to take advantage of for them. The authors even enable you construct your individual geocoder from scratch, for these high-volume batch jobs.

As good as delivering hands-on examples of actual mapping tasks, this e-book offers an entire reference for the Maps API, besides the appropriate points of JavaScript, CSS, personal home page, and SQL. stopover at the authors' web site for extra counsel and advice.

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Extra info for Beginning Google Maps Applications with PHP and Ajax: From Novice to Professional

Sample text

Separating these out not only increases loading speeds, as the browser can cache the JavaScript independently of the XHTML, but their removal also helps prevent the messy and unreadable code that results from mixing XHTML with other programming languages. Your eyes and your text editor will love you if they don’t have to deal with mixed XHTML and JavaScript at the same time. In this case, you’ll actually take it one step further and also separate the marker data file from the map functions file.

Note In this book, you’ll see primarily MySQL used for storing data permanently. Some people however, have proposed the exact format in Figure 2-5 as an alternative to XML, calling it JSON, for JavaScript Object Notation. While there are some advantages, JSON’s plethora of punctuation can be intimidating to a less technical person. org. We’ll still be using a lot of JSON-like structures for communicating data from the server to the browser. qxd 28 7/25/06 1:26 PM Page 28 CHAPTER 2 ■ GETTING STARTED Iterating JavaScript, like many languages, provides a for loop—a way of repeating a block of code for so many iterations, using a counter.

Longitude. Most likely, for your application you’ll want more than one marker on the map. qxd 7/25/06 1:26 PM Page 27 CHAPTER 2 ■ GETTING STARTED Then you can cycle through the array, accessing the members of each object and plotting a marker for each entity. When the nesting is combined into one step (Figure 2-5), it becomes a surprisingly elegant data structure, as in Listing 2-7. Listing 2-7. 035307, 'name': 'Washington Monument' } ]; Figure 2-5. A series of objects stored inside an array As you’ll see in the next section, JavaScript provides some terrific methods for working with data in this type of format.

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