St. Name: ……………………………….
St. #: ………………………………….
Philadelphia University
Lecturer(s):
Faculty of IT Department of MIS
Internal examiner:
Examination Paper
---------------------------------------------------------------------------------------
(731213) Introduction to Web Programming
Time: 50 min
Information for Candidates
This examination paper contains 4 questions totaling 20 marks.
Advices to Candidates
 Attempt all questions.
 Read all questions carefully before answering.
 Allocate the available exam time to given questions properly
 Write your answers clearly.
-------------------------------------------------------
I. Basic Notions
Objectives: the aim of the following question is to evaluate your basic knowledge.
Q1: Select the correct answer from the choices given for the following questions:
1) The output of the following code is:
<?php
function f($x)
{
$x=1;
$x++;
return ($x);
}
echo f(1);
echo f(2);
?>
a) 12
b) 23
c) 22
d) 1122
2) The output of the following code is:
<?php
function f()
{
static $var=10;
$var++;
return ($var);
}
echo f();
echo f();
?>
a) 1112
b) 1010
3) The output of the following code is:
c) 12
Page 1 of 6
d) 1211
[5 marks]
<?php
$x=6;
do {
echo "The number is: $x <br>";
$x++;
} while ($x<=5);
?>
a) 10
b) 6
c) 2
d) 5
4) The output of the following code is:
<?php
$s = ‘ali’;
function fun()
{
$s=’ola’;
}
echo ($s);
fun();
echo ($s);
?>
a) aliola
b) aliali
c) olaola
d) olaali
5) The output of the following code is:
<?php
$s = ‘ali’;
function fun()
{
global $s;
$s=’ola’;
}
echo ($s);
fun();
echo ($s);
?>
a) aliola
b) olaali
c) aliali
Q2. Find the output of the following code:
Page 2 of 6
d) olaola
A)
[2 marks]
<?php
for($j=3; $j>0; $j--)
switch($j-1)
{ case 2: echo "HI<br>"; break;
case 1: echo "BYE<br>"; break;
default: echo "Chow<br>";
}
HI
BYE
Chow
?>
B)
[2 marks]
<?
function test(&$b)
{ $b++;
echo ++$b;
$b = $b++ + 4;
echo $b;
}
$y=2;
test($y);
echo $y;
?>
488
[3 marks]
C)
Page 3 of 6
<?
define("X", "0");
define("Y", "1");
define("Z", "2");
$a = "";
$b = "ABC";
$c = 5;
if(empty($a))
echo "X";
else echo "Y";
if($a++-1==5 xor $b==Y)
echo "A";
else echo "B";
if(X==empty($a))
echo "X";
else echo "Y";
if(isset($a))
echo "A";
else echo "B";
if($a++-1==5 xor $b=Y)
echo "A";
else echo "B";
XBXAAB
if(empty($a)==isset($a))
echo "A";
else echo "B";
?>
Page 4 of 6
II. Familiar problem solving
Objectives: the aim of the following question is to evaluate your capabilities in solving familiar
cases.
Q3: Write a function that receives a number and returns 1 if the received number is perfect.
Otherwise, the function returns 0.
[5 marks]
Hint: A perfect number is a positive integer that is equal to the sum of it’s positive integral factors
including 1 but excluding itself .
<?
function isP($x)
{
$c = 0;
for($i=1; $i<$x; $i++)
if($x%$i==0)
$c=$c+$i;
if($c==$x) return 1;
else return 0;
}
echo isP(6);
?>
Page 5 of 6
III. Unfamiliar problem solving
Objectives: the aim of the following question is to evaluate your capabilities in solving unfamiliar
cases.
Q4: Write a function that calculates and returns the average of the numbers between 1 and 100 that
are a multiple of five and even.
[3 marks]
<?
function fun1()
{
$c = 0;
$sum = 0;
for($i=1; $i<=1000; $i++)
if($i%5==0 and $i%2==0)
{ $c++;
$sum+=$i;
}
return $sum/$c;
}
echo fun1();
?>
GOOD LUCK 
Page 6 of 6