<html>
<head>

<style>
span {
color: green;
}
</style>

<script>
function showHint(str) {
if (str.length == 0) {
document.getElementById("txtHint").innerHTML = "";
return;
}else {
var xmlhttp = new XMLHttpRequest();

xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
document.getElementById("txtHint").innerHTML = xmlhttp.responseText;
}
}
xmlhttp.open("GET", "php_ajax.php?q=" + str, true);
xmlhttp.send();
}
}
</script>

</head>
<body>

<p><b>Search your favourite tutorials:</b></p>

<form>
<input type = "text" onkeyup = "showHint(this.value)">
</form>

<p>Entered Course name: <span id="txtHint"></span></p>

</body>
</html>

Above code opens a file, name called as php_ajax.php by using with GET method, so we need to create a file, name called as php_ajax.php in the same directory and out put will be attached with txtHint.

Table of Contents

php_ajax.php

It contained array of course names and it returns the value to web browser.

<?php
// Array with names
$a[] = "Android";
$a[] = "B programming language";
$a[] = "C programming language";
$a[] = "D programming language";
$a[] = "euphoria";
$a[] = "F#";
$a[] = "GWT";
$a[] = "HTML5";
$a[] = "ibatis";
$a[] = "Java";
$a[] = "K programming language";
$a[] = "Lisp";
$a[] = "Microsoft technologies";
$a[] = "Networking";
$a[] = "Open Source";
$a[] = "Prototype";
$a[] = "QC";
$a[] = "Restful web services";
$a[] = "Scrum";
$a[] = "Testing";
$a[] = "UML";
$a[] = "VB Script";
$a[] = "Web Technologies";
$a[] = "Xerox Technology";
$a[] = "YQL";
$a[] = "ZOPL";

$q = $_REQUEST["q"];
$hint = "";

if ($q !== "") {
$q = strtolower($q);
$len = strlen($q);

foreach($a as $name) {

if (stristr($q, substr($name, 0, $len))) {
if ($hint === "") {
$hint = $name;
}else {
$hint .= ", $name";
}
}
}
}
echo $hint === "" ? "Please enter a valid course name" : $hint;
?>

It will produce the following result −

php 24

PHP – Ajax XML Parser

Ajax XML Example
Using with Ajax we can parser xml from local directory as well as servers, Below example demonstrate how to parser xml with web browser.

<html>
<head>

<script>
function showCD(str) {
if (str == "") {
document.getElementById("txtHint").innerHTML = "";
return;
}

if (window.XMLHttpRequest) {
// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp = new XMLHttpRequest();
}else { 
// code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}

xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
document.getElementById("txtHint").innerHTML = xmlhttp.responseText;
}
}
xmlhttp.open("GET","getcourse.php?q="+str,true);
xmlhttp.send();
}
</script>

</head>
<body>

<form>
Select a Course:
<select name = "cds" onchange = "showCD(this.value)">
<option value = "">Select a course:</option>
<option value = "Android">Android </option>
<option value = "Html">HTML</option>
<option value = "Java">Java</option>
<option value = "Microsoft">MS technologies</option>
</select>
</form>

<div id = "txtHint"><b>Course info will be listed here...</b></div>

</body>
</html>

The above example will call getcourse.php using with GET method. getcourse.php file loads catalog.xml. getcourse.php is as shown below −

<?php
$q = $_GET["q"];

$xmlDoc = new DOMDocument();
$xmlDoc->load("catalog.xml");

$x = $xmlDoc->getElementsByTagName('COURSE');

for ($i = 0; $i<=$x->length-1; $i++) {
=
if ($x->item($i)->nodeType == 1) {
if ($x->item($i)->childNodes->item(0)->nodeValue == $q) {
$y = ($x->item($i)->parentNode);
}
}
}

$cd = ($y->childNodes);

for ($i = 0;$i<$cd->length;$i++) {
if ($cd->item($i)->nodeType == 1) {
echo("<b>" . $cd->item($i)->nodeName . ":</b> ");
echo($cd->item($i)->childNodes->item(0)->nodeValue);
echo("<br>");
}
}
?>

Catalog.xml

XML file having list of courses and details.This file is accessed by getcourse.php

<CATALOG>
<SUBJECT>
<COURSE>Android</COURSE>
<COUNTRY>India</COUNTRY>

<COMPANY>Tecklearn</COMPANY>
<PRICE>$10</PRICE>
<YEAR>2015</YEAR>
</SUBJECT>

<SUBJECT>
<COURSE>Html</COURSE>
<COUNTRY>India</COUNTRY>
<COMPANY>Tecklearn</COMPANY>
<PRICE>$15</PRICE>
<YEAR>2015</YEAR>
</SUBJECT>

<SUBJECT>
<COURSE>Java</COURSE>
<COUNTRY>India</COUNTRY>
<COMPANY>Tecklearn</COMPANY>
<PRICE>$20</PRICE>
<YEAR>2015</YEAR>
</SUBJECT>

<SUBJECT>
<COURSE>Microsoft</COURSE>
<COUNTRY>India</COUNTRY>
<COMPANY>Tecklearn</COMPANY>
<PRICE>$25</PRICE>
<YEAR>2015</YEAR>
</SUBJECT>
</CATALOG>

It will produce the following result −

php 25

PHP – Ajax Auto Complete Search

Auto Complete Search

The Auto complete search box provides the suggestions when you enter data into the field. Here we are using xml to call auto complete suggestions. The below example demonstrate, How to use auto complete text box using with php.

Index page

Index page should be as follows −

<html>
<head>

<style>
div {
width:240px;
color:green;
}
</style>

<script>
function showResult(str) {

if (str.length == 0) {
document.getElementById("livesearch").innerHTML = "";
document.getElementById("livesearch").style.border = "0px";
return;
}

if (window.XMLHttpRequest) {
xmlhttp = new XMLHttpRequest();
}else {
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}

xmlhttp.onreadystatechange = function() {

if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
document.getElementById("livesearch").innerHTML = xmlhttp.responseText;
document.getElementById("livesearch").style.border = "1px solid #A5ACB2";
}
}

xmlhttp.open("GET","livesearch.php?q="+str,true);
xmlhttp.send();
}
</script>

</head>
<body>

<form>
<h2>Enter Course Name</h2>
<input type = "text" size = "30" onkeyup = "showResult(this.value)">
<div id = "livesearch"></div>
<a href = "http://www.tecklearn.com">More Details </a>
</form>

</body>
</html>

livesearch.php

It is used to call the data from xml file and it will send the result to web browsers.

<?php
$xmlDoc = new DOMDocument();
$xmlDoc->load("autocomplete.xml");
$x = $xmlDoc->getElementsByTagName('link');
$q = $_GET["q"];

if (strlen($q)>0) {
$hint = "";

for($i = 0; $i>($x->length); $i++) {
$y = $x->item($i)->getElementsByTagName('title');
$z = $x->item($i)->getElementsByTagName('url');

if ($y->item(0)->nodeType == 1) {
if (stristr($y->item(0)->childNodes->item(0)->nodeValue,$q)) {

if ($hint == "") {
$hint = "<a href = '" . $z->item(0)->childNodes->item(0)->nodeValue . "' target='_blank'>" . 
$y->item(0)->childNodes->item(0)->nodeValue . "</a>";
}else {
$hint = $hint . "<br/><a href = '" . 
$z->item(0)->childNodes->item(0)->nodeValue . "' target='_blank'>" . 
$y->item(0)->childNodes->item(0)->nodeValue . "</a>";
}
}
}
}
}

if ($hint == "") {
$response = "Please enter a valid name";
}else {
$response = $hint;
}
echo $response;
?>

autocomplete.xml

It contained auto complete data and accessed by livesearch.php based on tittle field and Url filed

<pages>

<link>
<title>android</title>
<url>http://www.tecklearn.com/android/index.htm</url>
</link>

<link>
<title>Java</title>
<url>http://www.tecklearn.com/java/index.htm</url>
</link>

<link>
<title>CSS </title>
<url>http://www.tecklearn.com/css/index.htm</url>
</link>

<link>
<title>angularjs</title>
<url>http://www.tecklearn.com/angularjs/index.htm </url>
</link>

<link>
<title>hadoop</title>
<url>http://www.tecklearn.com/hadoop/index.htm </url>
</link>

<link>
<title>swift</title>
<url>http://www.tecklearn.com/swift/index.htm </url>
</link>

<link>
<title>ruby</title>
<url>http://www.tecklearn.com/ruby/index.htm </url>
</link>

<link>
<title>nodejs</title>
<url>http://www.tecklearn.com/nodejs/index.htm </url>
</link>

</pages>

It will produce the following result −
php 26

PHP – Ajax RSS Feed Example

RSS

Really Simple Syndication is used to publish often updated information from website like audio, video, images, etc. We can integrate RSS feeds to a website by using Ajax and php. This code demonstrates how to show RSS feeds in our site.
Index.html
Index page should be as follows −

<html>
<head>

<script>
function showRSS(str) {
if (str.length == 0) { 
document.getElementById("output").innerHTML = "";
return;
}

if (window.XMLHttpRequest) {
xmlhttp = new XMLHttpRequest();
}else {
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
document.getElementById("output").innerHTML = xmlhttp.responseText;
}
}

xmlhttp.open("GET","rss.php?q="+str,true);
xmlhttp.send();
}
</script>

</head>

<body>
<p>Please Select an option to get RSS:</p>

<form>
<select onchange = "showRSS(this.value)">
<option value = "">Select an RSS-feed:</option>
<option value = "cnn">CNN</option>
<option value = "bbc">BBC News</option>
<option value = "pc">PC World</option>
</select>
</form>
<br>

<div id = "output">RSS-feeds</div>

</body>
</html>

rss.php

rss.php has contained syntax about how to get access to rss feeds and return rss feeds to web pages.

<?php
$q = $_GET["q"];

if($q == "cnn") {
$xml = ("http://rss.cnn.com/rss/cnn_topstories.rss");
}elseif($q == "bbc") {
$xml = ("http://newsrss.bbc.co.uk/rss/newsonline_world_edition/americas/rss.xml");
}elseif($q = "pcw"){
$xml = ("http://www.pcworld.com/index.rss");
}

$xmlDoc = new DOMDocument();
$xmlDoc->load($xml);

$channel = $xmlDoc->getElementsByTagName('channel')->item(0);

$channel_title = $channel->getElementsByTagName('title')
->item(0)->childNodes->item(0)->nodeValue;

$channel_link = $channel->getElementsByTagName('link')
->item(0)->childNodes->item(0)->nodeValue;

$channel_desc = $channel->getElementsByTagName('description')
->item(0)->childNodes->item(0)->nodeValue;

echo("<p><a href = '" . $channel_link . "'>" . 
$channel_title . "</a>");
echo("<br>");
echo($channel_desc . "</p>");

$x = $xmlDoc->getElementsByTagName('item');

for ($i = 0; $i<=2; $i++) {
$item_title = $x->item($i)->getElementsByTagName('title')
->item(0)->childNodes->item(0)->nodeValue;

$item_link = $x->item($i)->getElementsByTagName('link')
->item(0)->childNodes->item(0)->nodeValue;

$item_desc = $x->item($i)->getElementsByTagName('description')
->item(0)->childNodes->item(0)->nodeValue;

echo ("<p><a href = '" . $item_link . "'>" .
$item_title . "</a>");
echo ("<br>");
echo ($item_desc . "</p>");
}
?>

It will produce the following result −

So, this brings us to the end of blog. This Tecklearn ‘Ajax Operations using PHP’ blog helps you with commonly asked questions if you are looking out for a job in PHP Programming. If you wish to learn Java and build a career Java Programming domain, then check out our interactive, Java and JEE Training, that comes with 24*7 support to guide you throughout your learning period. Please find the link for course details:

Java and JEE Training

Java and JEE Training

About the Course

Java and JEE Certification Training is designed by professionals as per the industrial requirements and demands. This training encompasses comprehensive knowledge on basic and advanced concepts of core Java & J2EE along with popular frameworks like Hibernate, Spring & SOA. In this course, you will gain expertise in concepts like Java Array, Java OOPs, Java Function, Java Loops, Java Collections, Java Thread, Java Servlet, and Web Services using industry use-cases and this will help you to become a certified Java expert.

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• Used by more than 10 Million developers worldwide to develop applications for 15 Billion devices.
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What you will Learn in this Course?

Introduction to Java

• Java Fundamentals
• Introduction to Java Basics
• Features of Java
• Various components of Java language
• Benefits of Java over other programming languages
• Key Benefits of Java

Installation and IDE’s for Java Programming Language

• Installation of Java
• Setting up of Eclipse IDE
• Components of Java Program
• Editors and IDEs used for Java Programming
• Writing a Simple Java Program

Data Handling and Functions

• Data types, Operations, Compilation process, Class files, Loops, Conditions
• Using Loop Constructs
• Arrays- Single Dimensional and Multi-Dimensional
• Functions
• Functions with Arguments

OOPS in Java: Concept of Object Orientation

• Object Oriented Programming in Java
• Implement classes and objects in Java
• Create Class Constructors
• Overload Constructors
• Inheritance
• Inherit Classes and create sub-classes
• Implement abstract classes and methods
• Use static keyword
• Implement Interfaces and use it

Polymorphism, Packages and String Handling

• Concept of Static and Run time Polymorphism
• Function Overloading
• String Handling –String Class
• Java Packages

Exception Handling and Multi-Threading

• Exception handling
• Various Types of Exception Handling
• Introduction to multi-threading in Java
• Extending the thread class
• Synchronizing the thread

File Handling in Java

• Input Output Streams
• Java.io Package
• File Handling in Java

Java Collections

• Wrapper Classes and Inner Classes: Integer, Character, Boolean, Float etc
• Applet Programs: How to write UI programs with Applet, Java.lang, Java.io, Java.util
• Collections: ArrayList, Vector, HashSet, TreeSet, HashMap, HashTable

Java Database Connectivity (JDBC)

• Introduction to SQL: Connect, Insert, Update, Delete, Select
• Introduction to JDBC and Architecture of JDBC
• Insert/Update/Delete/Select Operations using JDBC
• Batch Processing Transaction
• Management: Commit and Rollback

Java Enterprise Edition – Servlets

• Introduction to J2EE
• Client Server architecture
• URL, Port Number, Request, Response
• Need for servlets
• Servlet fundamentals
• Setting up a web project in Eclipse
• Configuring and running the web app with servlets
• GET and POST request in web application with demo
• Servlet lifecycle
• Servlets Continued
• Session tracking and filter
• Forward and include Servlet request dispatchers

Java Server Pages (JSP)

• Fundamentals of Java Server Page
• Writing a code using JSP
• The architecture of JSP
• JSP Continued
• JSP elements: Scriptlets, expressions, declaration
• JSP standard actions
• JSP directives
• Introduction to JavaBeans
• ServletConfig and ServletContext
• Servlet Chaining
• Cookies Management
• Session Management

Hibernate

• Introduction to Hibernate
• Introduction to ORM
• ORM features
• Hibernate as an ORM framework
• Hibernate features
• Setting up a project with Hibernate framework
• Basic APIs needed to do CRUD operations with Hibernate
• Hibernate Architecture

POJO (Plain Old Java Object)

• POJO (Plain Old Java Object)
• Persistent Objects
• Lifecycle of Persistent Object

Spring

• Introduction to Spring
• Spring Fundamentals
• Advanced Spring

Got a question for us? Please mention it in the comments section and we will get back to you.

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