Deck 17: PHP Array Functions and Basics

Question 1

What function computes the difference of arrays?

A)array_diff
B)diff_array
C)arrays_diff
D)diff_arrays

Answer 1

array_diff

Question 2

What functions count elements in an array?

A)Count
B)Size
C)Array_Count
D)Count_array

Answer 2

Count

Question 3

There are three different kind of arrays:

A)Numeric array, String array, Multidimensional array
B)Numeric array, Associative array, Dimensional array
C)Numeric array, Associative array, Multidimensional array
D)Const array, Associative array, Multidimensional array

Answer 3

Numeric array, Associative array, Multidimensional array

Question 4

Which array function checks if the specified key exists in the array

A)array_key_exist()
B)array_key_exists()
C)array_keys_exists()
D)arrays_key_exists()

Question 5

Which of the following DBMSs do not have a native PHP extension?

A)MySQL
B)IBM DB/2
C)Microsoft SQL Server
D)None of the above

Question 6

In PHP in order to access MySQL database you will use:

A)mysqlconnect() function
B)mysql-connect() function
C)mysql_connect() function
D)sql_connect() function

Question 7

PHP files have a default file extension of..

A).html
B).xml
C).php
D).ph

Question 8

Which of the following is/are a PHP code editor?
i. Notepad
ii. Notepad++
iii. Adobe Dreamweaver
iv. PDT

A)Only iv)
B)Only iii)
C)i), ii) and iii)
D)All of the above

Question 9

Which version of PHP introduced Try/catch Exception?

A)PHP 4
B)PHP 5
C)PHP 5.3
D)PHP 6

Question 10

We can use ___ to comment a single line?
i. /?
ii. //
iii. #
iv. /* */

A)Only ii)
B)i), iii) and iv)
C)ii), iii) and iv)
D)Both ii) and iv)

Question 11

Which of the below statements is equivalent to $add += $add ?

A)$add = $add
B)$add = $add +$add
C)$add = $add + 1
D)$add = $add + $add + 1

Question 12

Which of the conditional statements is/are supported by PHP?
i. if statements
ii. if-else statements
iii. if-elseif statements
iv. switch statements

A)Only i)
B)i), ii) and iv)
C)ii), iii) and iv)
D)All of the above

Question 13

Which of the looping statements is/are supported by PHP?
i. for loop
ii. while loop
iii. do-while loop
iv. foreach loop

A)i) and ii)
B)i), ii) and iii)
C)All of the above
D)None of the above

Question 14

If $a = 12 what will be returned when ($a == 12)? 5: 1 is executed?

A)12
B)1
C)Error
D)5

Question 15

Who is the father of PHP?

A)Rasmus Lerdorf
B)Willam Makepiece
C)Drek Kolkevi
D)List Barely

Question 16

What will be the output of the following php code?
<?php $num = "1"; $num1 = "2"; print $num+$num1; ?>

A)3
B)1+2
C)Error
D)12

Question 17

Which of following variables can be assigned a value to it?
i. $3hello
ii. $_hello
iii. $this
iv. $This

A)All of the above
B)Only ii)
C)ii), iii) and iv)
D)ii) and iv)

Question 18

What will be the output of the following PHP code?
<?php $a = "clue"; $a .= "get"; echo "$a"; ?>

A)get
B)true
C)false
D)clueget