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Getting Started with Php, Ajax, Jquery

Basic php

Lets set the php development environment LAMP, Install WampServer2.0i.exe
Once you install WampServer2, you are ready to run a php file on browser,
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  Also read
Basic php | Oops in php | Php custom object | Php API | Php Webservice
Once you are ready with php-mysql envionment you might have few basic questions, Here i am trying to put all questions and answers together.

Php is simply fun ! easy ..but yes more you do ..more you become expert.

How to include file?
Include file in php
<?php include("header.php"); ?>
1:
2:<?php include("footer.php"); ?>
3:
How to deal with cookie & session in php ?
Cookie and Session in php
<?php
1:// Setting and Reading Cookie
2:$value = 'Here i am setting my cookie values';
3:
4:setcookie("TestCookie", $value, time()+3600);
5:
6:echo $_COOKIE["TestCookie"];
7:
8:?>
9:
10:Now we see how to use session in php.
11:
12:Wherever you want to use session, you need to place the following line before <html> tag start.
13:
14:<?php session_start(); ?>
15:
16:Now setting value in session
17:
18:<?php
19:$_SESSION['username']=$_POST['username'];
20:?>
21:
22:Reading value from session
23:<?php
24:echo "<b>".$_SESSION['username'] . "</b>";
25:?>
26:
How to use ajax in php ?
How to use jquery in php ?
How to open database connection and read data in php ?
Read data from mysql in php
<?php
1:$con = mysql_connect("localhost","peter","abc123");
2:if (!$con)
3: {
4: die('Could not connect: ' . mysql_error());
5: }
6:
7:mysql_select_db("my_db", $con);
8:
9:$result = mysql_query("SELECT * FROM Persons");
10:
11:echo "<table border='1'>
12:<tr>
13:<th>Firstname</th>
14:<th>Lastname</th>
15:</tr>";
16:
17:while($row = mysql_fetch_array($result))
18: {
19: echo "<tr>";
20: echo "<td>" . $row['FirstName'] . "</td>";
21: echo "<td>" . $row['LastName'] . "</td>";
22: echo "</tr>";
23: }
24:echo "</table>";
25:
26:mysql_close($con);
27:?>
28:
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