Basic PHP Quiz 1

A quiz covering fundamental PHP concepts including syntax, variables, functions, arrays, operators, and control structures

10 Questions Published

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Questions

Question 1 Multiple Choice (Single Answer)

What PHP stands for?

Hypertext Preprocessor
Pre Hypertext Processor
Pre Hyper Processor
Pre Hypertext Process

Question 2 Multiple Choice (Single Answer)

How does the identity operator === compare two values?

It converts them to a common compatible data type and then compares the resulting values
It returns True only if they are both of the same type and value
If the two values are strings, it performs a lexical comparison
It bases its comparison on the C strcmp function exclusively

Question 3 Multiple Choice (Single Answer)

Under what circumstance is it impossible to assign a default value to a parameter while declaring a function?

When the parameter is Boolean
When the function is being declared as a member of a class
When the parameter is being declared as passed by reference
When the function contains only one parameter

Question 4 Multiple Choice (Single Answer)

Variables always start with a ........ in PHP

Pond-sign
Yen-sign
Dollar-sign
Euro-sign

Question 5 Multiple Choice (Single Answer)

What is the value displayed when the following is executed? Assume that the code was executed using the following URL:

testscript.php?c=25

25
10
-5
0

Question 6 Multiple Choice (Single Answer)

Choose the appropriate function declaration for the user-defined function is_leap(). Assume that, if not otherwise defined, the is_leap function uses the year 2000 as a default value:

{
$is_leap = (!($year %4) && (($year % 100) ||
!($year % 400)));
return $is_leap;
}
var_dump(is_leap(1987)); /* Displays false /
var_dump(is_leap()); / Displays true */

function is_leap($year = 2000)
function is_leap($year default 2000)
function is_leap($year)
is_leap($year default 2000)

Question 7 Multiple Choice (Single Answer)

What is the best way to iterate through the $myarray array, assuming you want to modify the value of each element as you do?

$myarray = array ("My String","Another String","Hi, Mom!");

Using a for loop
Using a foreach loop
Using a while loop
Using a do..while loop

Question 8 Multiple Choice (Single Answer)

Which language construct can best represent the following series of if conditionals?

if($a == 'a') {
  somefunction();
} else if ($a == 'b') {
  anotherfunction();
} else if ($a == 'c') {
  dosomething();
} else {
  donothing();
}

A switch statement without a default case
A recursive function call
A switch statement using a default case
A while statement

Question 9 Multiple Choice (Single Answer)

What will the following script output?

$array = '0123456789ABCDEFG';
  $s = '';
  for ($i = 1; $i < 50; $i++) {
     $s .= $array[rand(0,strlen ($array) - 1)];
  }
echo $s;

A string of 50 random characters
A string of 49 copies of the same character, because the random number generator
A string of 49 random characters
has not been initialized

Question 10 Multiple Choice (Single Answer)

What is the output of the following script?

$a = 10;
$b = 20;
$c = 4;
$d = 8;
$e = 1.0;
$f = $c + $d * 2;
$g = $f % 20;
$h = $b - $a + $c + 2;
$i = $h << $c;
$j = $i * $e;
print $j;

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