Download Beginning Ajax with PHP: From Novice to Professional by Lee Babin PDF

By Lee Babin

PHP is the world's hottest internet scripting language, with an set up base of just about 24 million web pages. Ajax (Asynchronous JavaScript and XML) breathes new lifestyles into internet functions by way of transparently speaking and manipulating info along with a server-based know-how, and is well essentially the most said subject matters in internet improvement circles this day. Of all of the applied sciences in a position to operating along side Ajax, possibly none are more desirable than PHP.

Pro Ajax and Hypertext Preprocessor: construction hugely Interactive purposes is the 1st e-book to introduce how those renowned applied sciences can interact to create subsequent new release functions. overlaying a number of the such a lot average issues builders come across in day-by-day internet program improvement initiatives, Babin courses readers via themes equivalent to greater varieties validation, information reveal and manipulation, JavaScript debugging, and safeguard issues. the result's a e-book that not just discusses how of the world's such a lot said applied sciences can come jointly to create remarkable purposes, yet is additionally established upon a real-world context, permitting builders to right away start making use of what they've discovered to their very own situation.

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Php for ($i = 0; $i < count ($outputarr); $i++){ echo $outputarr[$i] . > As you can see, the system runs through the associative array (this would normally be a database query) and then loads any matches into the outputarr array variable. Then, if any matches are found, it displays them within a div that you create on the fly. The result is a very dynamic task listing, as shown in Figure 3-4. Figure 3-4. Displaying tasks through the magic of the Ajax tool tip Summary Well, how was that for a crash course on some rather complicated, but basic client/server Ajax/PHP examples?

Qxd 9/27/06 2:49 PM Page 41 CHAPTER 3 ■ PHP AND AJAX Figure 3-2. Auto-complete makes data entry seamless and effective. Form Validation I won’t get too far into form validation until Chapter 5, when I discuss forms in their entirety. However, it would be prudent to show a rather nice trick that can be done using Ajax to validate what used to be a difficult set of information to error check. Most fields could be validated on the client side by using JavaScript to determine empty fields, bad information, and so on.

Send(null); } else { //Hide the calendar. innerHTML = ""; } } This looks fairly basic, right? js file. A function called showHideCalendar is created, which will either show or hide the calendar module based upon the condition of the showCalendar variable. php script. The results from said script are then displayed within the calendar page element. You could obviously modify this to load into whatever element you prefer. The script also changes the state of your plus-and-minus image to show true open-and-close functionality.

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