Question 1

___ is used to aggregate a series of similar items together, arranging and dereferencing them in some specific way.

A. Function
B. Array
C. Index
D. Variable

Accepted Answer

Array 

(An array groups similar items and allows indexed access to each element.)

Question 2

foreach($arr as ___ => $value){
   //do something
}

A. $set
B. $get
C. $var
D. $key

Accepted Answer

$key 

(The foreach key-value syntax uses $key => $value to access both the key and value of each element.)

Question 3

Functions are designed to allow you to reuse the same code in different locations.

Accepted Answer

True 

(Code reuse is one of the core purposes of functions in any programming language.)

Question 4

Local Variables is one that declared outside a function and is available to all parts of the program.

Accepted Answer

False 

(That describes a Global variable. A local variable is declared inside a function and only accessible within it.)

Question 5

$fruit = array("orange","apple","grape","banana");
What is the value of index 3?

Accepted Answer

banana 

(Arrays are 0-indexed: index 0=orange, 1=apple, 2=grape, 3=banana.)

Question 6

$g = 200;
function a(){echo "5";}
function b(){echo "4";}
a();b();
What is the output of the code?

A. 45
B. 200
C. 54
D. Error

Accepted Answer

54 

(a() echoes "5" then b() echoes "4", so the combined output is 54.)

Question 7

Functions are limited to 1 per code only.

Accepted Answer

False (PHP allows you to define as many functions as needed in a single script.)

Question 8

8. function count($val){
   static $c = 0;
   $c += $val;
   echo $c;
}
Count(4);
Count(3);
What is the output of the code?

A. 47
B. 43
C. Error
D. 7

Accepted Answer

47 

(The static keyword retains the value between calls. First call: 0+4=4 (echoes 4). Second call: 4+3=7 (echoes 7). Output = 47.)

Question 9

$a[]="mango";
$a[]="apple";
$a[]="banana";
Check the code if valid or invalid?

A. Invalid
B. Valid

Accepted Answer

Valid 

(Using $a[] without specifying an index is valid PHP shorthand for appending to an array.)

Question 10

$g = 200;
function a(){echo "5";}
function b(){echo "4";}
a();
What is the value of the $g?

A. 4
B. 200
C. Error
D. 5

Accepted Answer

200  

(Function a() only echoes "5" — it does not modify $g. The variable remains 200.)

Question 11

var_dump function is same as print_r function except it adds additional information about the data of each element.

Accepted Answer

True 

(var_dump() shows the type and value of each element, while print_r() only shows the value.)

Question 12

___ references a corresponding value.

A. Array number
B. Array collection
C. Array index
D. Array setting

Accepted Answer

Array index 

(An array index (key) references/points to its corresponding value in the array.)

Question 13

$t = 100;
function one(){
   echo "1000";
}
one();
What is the value of the $t after executing the code?

A. 1000
B. 100
C. 1
D. Error

Accepted Answer

100 

(The function only echoes "1000" but does not modify $t. Its value stays 100.)

Question 14

___ functions that are provided by the user of the program.

A. Predefined function
B. User function
C. Program function
D. User defined function

Accepted Answer

User defined function

 (Functions written by the programmer/user of the program are called user defined functions.)

Question 15

$s = "variable";
function f(){
   echo "function called ";
   echo "$s";
}
f();
What is the output of the code?

A. function called variable
B. function called
C. function called undefined variable: s
D. function variable

Accepted Answer

function called undefined variable: s

Question 16

Array can be used as ordinary array same as in C and C++ arrays.

Accepted Answer

True 

(PHP arrays support numeric (integer) indexing just like arrays in C and C++.)

Question 17

___ functions that are built-in into PHP to perform some standard operations.

A. Predefined functions
B. User defined functions
C. Program functions
D. User function

Accepted Answer

Predefined functions 

(Built-in PHP functions (like strlen, array_push, etc.) are called predefined functions.)

Question 18

Functions can only have 1 parameter.

Accepted Answer

False

PHP functions can accept zero, one, or multiple parameters.

Question 19

Syntax for foreach

A. foreach($arr as $value){}
B. foreach($arr){}
C. foreach($value){}
D. foreach{}($arr as $value)

Accepted Answer

foreach($arr as $value){}
The correct foreach syntax is: foreach(array as $value){ } or foreach(array as $key => $value){ }

Question 20

What is the keyword used to gain access to a variable that is outside of the function?

A. Global
B. Overall
C. Default
D. Call

Accepted Answer

Global

The global keyword lets a function access a variable from the outer (global) scope.

Question 21

Most of the developers used include functions for their ___

A. Footer
B. Titles
C. Content
D. Body

Accepted Answer

Footer

 (Footer and header files contain standard layout code that is identical on every page, making them the primary use case for include functions.)

Question 22

Format character for day of the month without leading zeros

A. d
B. m
C. j
D. z

Accepted Answer

j (day without leading zeros (1–31). d = with leading zeros (01–31). m = month with leading zeros. z = day of the year.)

Question 23

$x = ceil(10.01);
echo $x;
What is the output?

A. Blank
B. Error
C. 10
D. 11

Accepted Answer

11

 (ceil() always rounds a fractional number UP to the next highest integer. Even 10.01 becomes 11.)

Question 24

In some scripts, a file might be included more than once, causing function redefinitions, variable reassignments, and other possible problems.

Accepted Answer

True 

(Using include/require multiple times can cause fatal errors like "Cannot redeclare function." Use include_once or require_once to prevent this.)

Question 25

Same as require function except it includes the file only once.

A. require
B. include_once
C. include
D. require_once

Accepted Answer

require_once

 (require_once behaves like require (halts on failure) but ensures the file is only loaded once, preventing redefinition errors.)

Question 26

$x = rand(5,10);
echo $x;
What is the maximum value of the output?

A. Error
B. 5
C. 10
D. 0

Accepted Answer

10 

(rand(min, max) is inclusive of both bounds. The highest possible value is 10.)

Question 27

___ returns the next lowest integer by rounding the value downwards

A. round()
B. floor()
C. down()
D. bottom()

Accepted Answer

floor() 

(floor() rounds down to the next lowest integer (e.g., floor(10.99) = 10). down() and bottom() are not valid PHP functions.
)

Question 28

___ converts string to lowercase

A. lowerstr
B. strtolower
C. stringtolow
D. strlow

Accepted Answer

strtolower 

(strtolower() is the built-in PHP function to convert all characters in a string to lowercase. The other options are not valid PHP functions.)

Question 29

___ Split a string by string

A. Unset
B. Destroy
C. Explode
D. Implode

Accepted Answer

Explode 

(explode() breaks a string into an array based on a delimiter. Implode() does the opposite — joins array elements into a string.)

Question 30

Syntax for include once

A. filename("include_once");
B. Include_once(filename.php);
C. Include_once(filename.inc);
D. Include_once("filename.inc");

Accepted Answer

Include_once("filename.inc"); 

(The filename must be a quoted string. Without quotes, PHP treats it as a constant and throws an error.)

Question 31

Key word to declare a define function

A. define
B. defined
C. def
D. dfn

Accepted Answer

define 

(define() creates a constant (e.g., define("MIN_AGE", 18)). defined() checks if a constant exists. def and dfn are not valid PHP keywords.)

Question 32

A constant's value cannot be changed.

Accepted Answer

True 

(Once defined using define() or const, a constant's value stays fixed throughout the entire script execution.)

Question 33

___ converts the first character of each word in a string to uppercase

A. wordsuc()
B. ucwords()
C. uwords()
D. cwords()

Accepted Answer

ucwords()

ucwords() stands for "uppercase words." Example: ucwords("hello world") returns "Hello World". The others are not valid PHP functions.

Question 34

Syntax to get a part of a given string

Accepted Answer

string substr

 ( string $string , int $start [, int $length ] )
substr() is the built-in PHP function to extract a part of a string. strpart, partstr, and strsub do not exist in PHP.

Question 35

There will be a warning text if the include file not found

Accepted Answer

True

include issues an E_WARNING and allows the script to continue. This differs from require, which throws a fatal error and halts execution.

Question 36

$val=234123.456;
echo number_format($val);
What is the output?

A. 234,123.46
B. 234123.46
C. 234,123
D. 234,123.4560

Accepted Answer

234,123

number_format() with one argument defaults to 0 decimal places and adds a comma as the thousands separator. .456 rounds down to 0.

Question 37

___ can only be assigned a scalar value, like a string or a number.

A. Contrast
B. Construct
C. Constant
D. Define

Accepted Answer

Constant

A constant can only hold scalar values (int, float, string, bool) or arrays (in newer PHP versions). Its value cannot be changed once set.

Question 38

___ Return the smallest value
Choices
A. small()
B. tiny()
C. low()
D. min()

Accepted Answer

min()

min() returns the lowest value from a set of numbers or an array. Example: min(2,3,1,6,8) returns 1. The others are not valid PHP functions.

Question 39

Syntax to strip white spaces or other characters from the beginning and end of a string.

Accepted Answer

string trim(string $str [, string $charlist ])

trim() strips whitespace (or specified characters) from both ends of a string. ltrim() trims the left only; rtrim() trims the right only.

Question 40

Format character for English ordinal suffix for the day of the month, 2 characters

A. D
B. E
C. S
D. C

Accepted Answer

S

S in PHP's date() function returns the ordinal suffix: st, nd, rd, or th — depending on the day (e.g., 1st, 2nd, 3rd, 4th).

Question 41

What is the result of the code?

function c1($n,$m){ echo $n+$n; }
function c2($n,$m){ echo $n-$m; }
function c3($n,$m){ echo $n*$m; }

$v=15;  
if ($v<15) {  
    c1($v,7);  
} elseif($v<20) {  
    c2($v,5);  
} else {  
    c3($v,3);  
}

Accepted Answer

10

Question 42

What is the result of the code?

function mf($n){
    echo "program";
}
echo "number";
mf(5);

programnumber

number

program

numberprogram

Accepted Answer

numberprogram

Question 43

What is the array index of the value gold?

$ranks = array("bronze","silver","gold","platinum");

1

2

3

gold

Accepted Answer

2

Question 44

What is the result of the code?

function m($n){ echo $n*2; }
function n($n){ echo $n*3; }

$v=2;
if($v>5) {
    m($v); 
} else { 
    n($v);
}

4

6

2

5

Accepted Answer

6

Question 45

How many indexes/elements are in the array item?
$item = array("card", "pen", "paper", "scissor");
PHP
$item = array("card", "pen", "paper", "scissor"); 
Choices:

1

2

3

4

Accepted Answer

4

Question 46

What is the output of the code?

PHP
function mf(){
    echo "my code";
}
echo "call function";
mf();
Choices:

my code

call function

call functionmy code

my codecall function

Accepted Answer

call functionmy code

Question 47

A group of statements that performs a specific task:

Choices:

variables

arrays

functions

constants

Accepted Answer

functions

Question 48

What is the result of the code?

PHP
function r($m){ echo $m + $m; } 
$b = 5;
r($b);
Choices:

5

25

10

Error

Accepted Answer

10

Question 49

Sorts array by value:

Choices:

ksort()

asort()

sort()

rsort()

Accepted Answer

sort()

Question 50

What is the result of the code?

PHP
function mf($n){ echo "prog".$n; }
echo "space";
mf(5);
Choices:

prog5

space

spaceprog5

prog5space

Accepted Answer

spaceprog5

Question 51

A statement used to iterate or loop through the elements in an array?

Choices:

for

while

do...while

foreach

Accepted Answer

foreach

Question 52

What is the result of the code?

PHP
$item=array("card","pen","paper","scissor");
echo $item[1];
Choices:

card

pen

paper

scissor

Accepted Answer

pen

Question 53

What is the output of the code?

PHP
function mf(){
    echo "mycode";
}
echo "call function";
Choices:

mycode

call function

call functionmycode

Blank

Accepted Answer

call function

Question 54

To create a function you always need a parameter.

Accepted Answer

False

Question 55

What is the result of the code?

PHP
$color = array("white","green","red");
echo $color[3];
Choices:

red

white

error

null

Accepted Answer

error

Question 56

What is the result of the code if the variable v is equal to 10?

PHP
function m($n){ echo $n*2; }
function n($n){ echo $n*3; }

$v=10;
if($v>5) {
    m($v); 
} else { 
    n($v);
}
Choices:

20

30

10

5

Accepted Answer

20

Question 57

What is the result of the code?

PHP
$color = array("white","green","red");
echo $color[0];
Choices:

white

green

red

error

Accepted Answer

white

Question 58

What is the result of the code if the condition of $v>5$ changed into $v<5$?PHPfunction m($n){ echo $n*2; }
function n($n){ echo $n*3; }

$v=2;
if($v<5) {
    m($v); 
} else { 
    n($v);
}
Choices:6 4 2 10

Accepted Answer

4

Question 59

What is the output of the code?

PHP
function disp(){
    function disp2(){
        echo "hello";
    }
}
disp();
disp2();
Choices:

hello

error

disp

blank

Accepted Answer

hello

Question 60

You can use functions in different ways.

Accepted Answer

True

Question 61

Question:

PHP
$f = array('102' => "red", '101' => "blue", '100' => "yellow");
ksort($f);
print_r($f);
What is the key of "yellow"?

Choices:

102

101

100

0

Accepted Answer

100

Question 62

Question:
Functions can be user-defined (generally defined by the user of the program) and predefined (that are built-in using libraries).

Accepted Answer

True

Question 63

You can create a function inside of a function.

Accepted Answer

True

Question 64

Global Variables are declared inside a function and are only available within the function in which they are declared.

Accepted Answer

False

FA3 & FA4 Appdev

FA3 Appdev

"Know" box contains:
Time elapsed:
Retries: