Question 2
(b) What is an HTML form? How can you access the form data in php page? Explain with suitable example.index.html(b) Explain the use of HTML table element for designing the web page layouts with appropriate examples.
<html>
<head><title>HTML Form</title>
</head>
<body>
<form action="submit.php" method="post">
Name : <input type="text" name="name" /> <br />
Branch : <input type="text" name="branch" /><br />
Semester : <input type="text" name="semester" /><br />
<input type="submit" value="Submit">
</form>
</body>
</html>
submit.php
<?php
echo "We can access form data with $_POST variable.";
echo "<br />";
echo "Student Details :- ";
echo "<br />";
echo "Name : ".$_POST['name'];
echo "<br />";
echo "Branch : ".$_POST['branch'];
echo "<br />";
echo "Semester : ".$_POST['semester'];
?>
<html>
<head>
<title>Table example</title>
</head>
<body>
<table style="width:100%; float:left; height:auto;" border="1" bordercolor="#000000">
<tr> <td colspan="3" style="width:100%; float:left; height:100px; text-align:center;">Header</td> </tr>
<tr> <td style="width:20%; float:left; height:400px; text-align:center;">Left side bar</td> <td style="width:60%; float:left; height:400px; text-align:center;">Main content</td> <td style="width:20%; float:left; height:400px; text-align:center;">Right side bar</td> </tr>
<tr> <td colspan="3" style="width:100%; float:left; height:50px; text-align:center;">Footer</td> </tr>
</table>
</body>
</html>
Question 3
(a) How can you perform validation using JavaScript? Show the validation using JavaScript with simple form having name, phone number and email field.<html>(b) Show the use of window object for controlling your browser.
<head>
<title>Javascript Validation</title>
<script type="text/javascript">
function validate(){
var name = document.getElementById("name").value;
var phone = document.getElementById("phone").value;
var email = document.getElementById("email").value;
var phoneRegex = /^\d{10}$/;
if(name == "" && phone == "" || email == ""){
alert("Please fill all fields!");
return false;
}
else if(!phone.match(phoneRegex)){
alert("Please enter 10 digit number!");
return false;
}
else{
var atpos=email.indexOf("@");
var dotpos=email.lastIndexOf(".");
if (atpos<1 || dotpos<atpos+2 || dotpos+2>=email.length){
alert("Please enter valid e-mail address");
return false;
}
else{
alert("All fields are correct!");
return true;
}
}
}
</script>
</head>
<body>
<form action="#" method="post" onSubmit="return validate()">
Name : <input type="text" id="name" /> <br />
Phone : <input type="text" id="phone" /><br />
Email : <input type="text" id="email" /><br />
<input type="submit" value="Submit">
</form> </body>
</html>
<html>(a) What is document object? Show its use in accessing the form elements with example.
<head>
<title>window object example</title>
<script>
function openWin()
{
myWindow=window.open("","","width=200,height=100");
myWindow.document.write("<p>This is 'myWindow'</p>");
}
function closeWin()
{
myWindow.close();
}
function moveWin()
{
myWindow.moveBy(250,250);
myWindow.focus();
}
function printpage()
{
myWindow.print();
}
function myFunction()
{
myWindow.resizeTo(500,500);
myWindow.focus();
}
</script>
</head>
<body>
<input type="button" value="Open 'myWindow'" onclick="openWin()" />
<input type="button" value="Move 'myWindow'" onclick="moveWin()" />
<input type="button" value="Resize 'myWindow'" onclick="myFunction()" />
<input type="button" value="Print 'myWindow'" onclick="printpage()" />
<input type="button" value="Close 'myWindow'" onclick="closeWin()" />
</body>
</html>
Document Object : When an HTML document is loaded into a web browser, it becomes a document object.
<html>
<head><title>Document Object</title>
<script type="text/javascript">
function countFields(){
alert(document.forms[0].length);
}
function getFields(str){
alert(document.forms[0].elements[str].value);
}
</script>
</head>
<body>
<form action="#">
Name : <input type="text" name="name" /> <br />
Branch : <input type="text" name="branch" /><br />
Semester : <input type="text" name="semester" /><br />
<input type="submit" value="Submit" />
</form>
<input type="button" value="Count form fields" onClick="countFields()" />
<input type="button" value="Value of Name field" onClick="getFields('name')"/>
<input type="button" value="Value of Branch field" onClick="getFields('branch')"/>
<input type="button" value="Value of Semester field" onClick="getFields('semester')" />
</body>
</html>
Question 4
(a) Write a PHP program that receives the value of N using HTML form and displays the first N Fibonacci numbers as HTML list.index.html <html>(b) Explain the PHP arrays with example.
<head><title>Fibonacci Numbers</title>
</head>
<body>
<form action="generate-fibonacci-series.php" method="post">
Number : <input type="text" name="number" /><br />
<input type="submit" value="Submit" />
</form>
</body>
</html> generate-fibonacci-series.php <?php
$a = -1;
$b = 1;
$number = $_POST['number'];
for($i=0;$i<$number;$i++){
$c = $a + $b;
echo $c." ";
$a = $b; $b = $c;
}
?>
Numeric Array
<?php
$numbers = array( 1, 2, 3, 4, 5);
foreach( $numbers as $value )
{
echo "Value is $value <br />";
}
?>
Associative Arrays <?php
$studentData = array(
"name" => "Jaydip Panchal",
"branch" => "Information Technology",
"semester" => 8
);
echo "Students Data : <br />";
foreach($studentData as $key=>$value )
{
echo "$key : $value <br />";
}
?>
Multidimensional Arrays
<?php
$marks = array(
"Jaydip Panchal" => array
(
"physics" => 35,
"maths" => 30,
"chemistry" => 39
),
"Arpan Patel" => array
(
"physics" => 30,
"maths" => 32,
"chemistry" => 29
)
); foreach($marks as $key=>$val){
echo "Marks for ".$key."<br />";
foreach($val as $k=>$v){
echo $k.":".$v."<br />";
}
}
?>
(a) What is session? How do php manage the sessions? Give an example to store and retrieve, your age as session variable
session : A session variable is used to store information about, or change settings for a user session. Session variables hold information about one single user, and are available to all pages in one application.
<?php session_start(); ?>
<html>
<head><title>Session management Example</title></head>
<body>
<?php
if(isset($_POST['submit'])){
$_SESSION['age'] = $_POST['age'];
}
if(isset($_SESSION['age']))
{
echo "Your age = ". $_SESSION['age'];
}
else
{
echo "Your age is not set";
}
?>
<form action="#" method="post">
Enter your age <input type="text" name="age" />
<input type="submit" value="Submit" name="submit" />
</form>
</body>
</html>
Question 5
(b) What is cookie? Explain the setcookie() function in PHP with meaning of all the arguments.bool setcookie ( string $name [, string $value [, int $expire = 0 [, string $path [, string $domain [, bool $secure = false [, bool $httponly = false ]]]]]] )
| name | The name of the cookie. |
| value | The value of the cookie. This value is stored on the clients computer |
| expire | The time the cookie expires.you'll most likely set this with the time() function plus the number of seconds before you want it to expire. |
| path | The path on the server in which the cookie will be available on. |
| domain | The domain that the cookie is available to. |
| secure | Indicates that the cookie should only be transmitted over a secure HTTPS connection from the client. When set to TRUE, the cookie will only be set if a secure connection exists. |
| httponly | When TRUE the cookie will be made accessible only through the HTTP protocol. This means that the cookie won't be accessible by scripting languages, such as JavaScript. |
