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Basic PHP Quiz 1

Description: Basic PHP Quiz 1
Number of Questions: 10
Created by:
Tags: php
Attempted 0/10 Correct 0 Score 0

What PHP stands for?

php
  1. Hypertext Preprocessor

  2. Pre Hypertext Processor

  3. Pre Hyper Processor

  4. Pre Hypertext Process


Correct Option: A

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

php
  1. It converts them to a common compatible data type and then compares the resulting values

  2. It returns True only if they are both of the same type and value

  3. If the two values are strings, it performs a lexical comparison

  4. It bases its comparison on the C strcmp function exclusively


Correct Option: B

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

php
  1. When the parameter is Boolean

  2. When the function is being declared as a member of a class

  3. When the parameter is being declared as passed by reference

  4. When the function contains only one parameter


Correct Option: C

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

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  1. Pond-sign

  2. Yen-sign

  3. Dollar-sign

  4. Euro-sign


Correct Option: C

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

testscript.php?c=25

php
  1. 25

  2. 10

  3. -5

  4. 0


Correct Option: C

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 */

php
  1. function is_leap($year = 2000)

  2. function is_leap($year default 2000)

  3. function is_leap($year)

  4. is_leap($year default 2000)


Correct Option: A

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!");

php
  1. Using a for loop

  2. Using a foreach loop

  3. Using a while loop

  4. Using a do..while loop


Correct Option: A

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();
}

php
  1. A switch statement without a default case

  2. A recursive function call

  3. A switch statement using a default case

  4. A while statement


Correct Option: C
Explanation:

A series of if…else if code blocks checking for a single condition as above is a perfect place to use a switch statement

What will the following script output?

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

echo $s;

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  1. A string of 50 random characters

  2. A string of 49 copies of the same character, because the random number generator

  3. A string of 49 random characters

  4. has not been initialized


Correct Option: C

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;

php
  1. 128

  2. 42

  3. 256

  4. 342


Correct Option: C
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