Q4) Attempt any four of the following : [4 × 4 = 16]
1)What is Inheritance? Explain
with suitable example.
o It is a concept of accessing the
features of one class from another class. If we inherit the class features into
another class, we can access both class properties. We can extends the features
of a class by using 'extends' keyword.
o It supports the concept of hierarchical
classification.
o Inheritance has three
types, single, multiple and multilevel Inheritance.
o PHP supports only single
inheritance, where only one class can be derived from single parent class.
o We can simulate multiple
inheritance by using interfaces.
<?php
class a
{
function fun1()
{
echo "javatpoint";
}
}
class b extends a
{
function fun2()
{
echo "SSSIT";
}
}
$obj= new b();
$obj->fun1();
?>
2)
Create a XML file which gives details of books availabel in "ABC
Bookstore" from following. Categories i) Technical ii) Cooking iii) YOGA
https://bcapractical2017.blogspot.com/2017/12/awt-slip18.html
3)
Define class Employee having private members id, name department, Salary.
Define parameterized constructor. Create a Subclass called "Manager"
with private member bonus. Create 6 objects of the Manager class and display
the details of the Manager having the maximum total salary. (Salary + bonus)
https://bcapractical2017.blogspot.com/2017/12/awt-slip5.html
4) Explain setting Response
Headers.
The superglobal $http_response_header array is
populated by HTTP response headers as is the case with get_headers() functions.
This array is created in local space of PHP
<?phpfile_get_contents("http://localhost");$arr=$http_response_header;foreach ($arr as $key=>$val)echo "<p>$key=>$val </p>";?>5) Explain
the structure of WSDL.
|
Element |
Description |
|
<types> |
Defines the (XML Schema) data types used by
the web service |
|
<message> |
Defines the data elements for each
operation |
|
<portType> |
Describes the operations that can be
performed and the messages involved. |
|
<binding> |
Defines the protocol and data format for
each port type |
The main structure of a WSDL document looks
like this:
<definitions>
<types>
data type definitions........
</types>
<message>
definition of the data being communicated....
</message>
<portType>
set of operations......
</portType>
<binding>
protocol and data format specification....
</binding>
</definitions>
WSDL Example
This is a simplified fraction of a WSDL
document:
<message name="getTermRequest">
<part name="term" type="xs:string"/>
</message>
<message name="getTermResponse">
<part name="value" type="xs:string"/>
</message>
<portType name="glossaryTerms">
<operation name="getTerm">
<input message="getTermRequest"/>
<output message="getTermResponse"/>
</operation>
</portType>
6) What are
the advantages of AJAX?
Ajax is a set of web
development techniques using many web technologies on the client-side to create
asynchronous web applications. With Ajax, web applications can send and
retrieve data from a server asynchronously without interfering with the display
and behavior of the existing page.
Any other technology Ajax also has its own pros and cons.
Let's look at some of those.
Pros −
·
Allows applications to render without data and fill data as
the application gets it from the server.
·
Gives platform independence to application developers
·
Faster page renders
·
More responsive applications
·
No rerenders of whole pages are needed to update only a
single area.
Cons−
·
Any user whose browser does not support JavaScript or
XMLHttpRequest, or has this functionality disabled, will not be able to
properly use pages that depend on Ajax.
·
Multiple server requests need more data consumed at the
client-side.
·
Failure of any one request can fail the load of the whole
page.
·
Browsers with JS disabled will not be able to use pages
using ajax.
7) Write a
PHP Script to read book. XML and print book details in tabular format using
simple XML. (Content of book. XML are (bookcode, bookname, author, year,
price).
https://bcapractical2017.blogspot.com/2017/12/awt-slip18.html
8) Write
PHP script to demonstrate the concept of introspection for examining object.
https://bcapractical2017.blogspot.com/2017/12/awt-slip3.html
9)Create student table as follows : Student
(Sno, Sname, Per). Write Ajax program to select the student name and print the
selected student’s details.
https://bcapractical2017.blogspot.com/2017/12/awt-slip12.html
10)Write Ajax Program to Print Movie details
by selecting and Actor’s name. Create table MOVIE and ACTOR as follows with 1:M
cardinality. MOVIE (mno, mname, release_) and ACTOR (ano, aname)
https://bcapractical2017.blogspot.com/2022/05/advance-php-slip21b-write-ajax-program.html
