Elance PHP Test Answers 2015 ( Part - 1 )
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Which of the following would be accepted as an
argument parameter in the following function: function getEmotion(Emotion
$emotion) { ... }
All of these
A class called Emotion
A class called Sad, which implements an Emotion
interface
A class called Happy, which extends Emotion
"virtual()" in PHP
makes the final method overrideable again
is equivalent to the keyword "abstract"
marks the method as virtual, so it could be
overridden
is an Apache-specific function
Which PHP function checks a month, day, and
year number to determine if they form a valid Gregorian date?
check_date()
checkdate()
verify_date()
verifydate()
Which function exchanges all keys with their
associated values in an array?
array_flip(array)
array_combine(array)
array_compare(array)
array_reverse(array)
Which PHP functions generate random numbers
following algorithms known as Mersenne Twister?
mt() and smt()
mt_alg() and mt_salg()
rand() and srand()
mt_rand() and mt_srand()
What does the return code E_ERROR indicate?
Compile-time parse error
User-generated error message
Fatal run-time error
Run-time notice
Which of the following functions would allow
you to convert a string to an array?
st2arr()
expand()
explode()
to_array()
implode()
Which variable name is incorrect?
$first
$1first
None of the above.
$_1FIRST
What is a collection of characters that is
treated as one entity called?
Element
Parameters
Function
String
What is output to the screen when executing
code: $> php -r 'echo echo "a";'
a
truea
aa
PHP Parse error
How can we increase the execution time of a
PHP script from setting php.ini?
By setting max_script_execution_time
By setting max_execution_time
By setting max_script_time
By setting script_execution_time
What type of statements tell your PHP script
to execute a section of code only if certain criteria are met?
Class
Function
Exception
Conditional
What is the result of the following code?
<?php $hello ="HELLO"; $hello=lcfirst($hello); echo $hello; ?>
hellO
None of these
hello
hELLO
HELLO
Which PHP math function would you use to
return the number with the lowest value of two specified numbers?
ceil()
min()
bottom()
max()
PHP requires that instruction statements be
terminated with a:
semicolon
underscore
curly brackets
period
Which of these does not represent a single,
valid PHP variable
$myVar
$my-Var
$my_Var
$myvar
Which function tests a string for an exact
match of the argument?
preg_match()
str()
test()
regex()
How do you inherit the methods from BaseClass
in MyClass?
class MyClass parent BaseClass {
class MyClass includes BaseClass {
class MyClass extends BaseClass {
class MyClass inherits BaseClass {
class MyClass using BaseClass {
Which statement returns the number of
characters in the string variable $a?
count($a)
strlen($a)
chr($a)
len($a)
sizeof($a)
Which of the following is a string operator?
plus(+)
minus(-)
decrement(--)
dot(.)
Which of the following variables does PHP make
automatically available to you?
$_UPLOADED_FILES
$_DIR
$_SERVER
The concatenation operator in PHP is
.
+
->
Which PHP function do you call to begin a PHP
session?
start_session();
open_session();
session_start();
session();
session_active();
Which of the following are examples of PHP
comments?
/* */
None of these
//
All of these
How is the following statement interpreted in
PHP? $i = 1;
$i is being compared to 1
$i is assigned a value of 1
None of these
$i is assigned a value of "one"
Which of the following are PHP comparison
operators?
===
All of these
!=
==
Which PHP math function would you use to
generate a random integer?
int()
rand()
random()
next()
Which of the following HTML form submission
methods is suitable when you need to send large amounts of form data?
Get
Post
Email
Send
How do you define a constant in PHP?
defined("CONSTANT", "Hello
world.");
define("CONSTANT", "Hello
world.");
eval("CONSTANT", "Hello
world.");
constant("CONSTANT", "Hello
world.");
Which statement allows you to add new records
to a MySQL database table?
All of these
PUT INTO
INSERT INTO
ADD INTO
Which of the following function libraries are
supported in PHP?
All of these
JSON
MySQL
GD
Which of the following variables is not a
predefined variable?
$_REQUEST
$_GET
$_POST
$_ASK
How do you combine multiple arrays into one
single PHP array?
array_pop()
array_merge()
array_compare()
array_shift()
Which of the following PHP language constructs
allows you to combine code from one file into another?
require()
All of the these
include()
require_once()
Which PHP function sorts an array?
array_alpha()
combine()
array_walk()
sort()
Which variable is not predefined by PHP?
$_GET
$_FILES
$_POST
$_ASK
An example of a PHP string is:
$a
"test"
&&
10
In PHP, how would you determine if a variable
is set?
isset()
unset()
combined()
isinit()
Variables in PHP start with a
dollar sign($)
underscore(_)
ampersand(&)
dot(.)
In PHP, functions using global variables must
declare the variables by using
the STATIC keyword.
the LOCAL keyword.
the GLOBAL keyword.
Which variable is used to collect values of a
form sent via the HTTP POST method?
$POST
_POST_
$_POST
POST
Choose the statement which produces this
output: This is an example.
<?php echo "This is an example.";
?>
<? "This is an example."; ?>
<p="This is an example."; ?>
<script language="php"> print
"This is an example.";</script>
Which of the following is a valid PHP function
modifier?
private
All of these
public
final
strpos() stands for
straight position.
strap OS.
string position.
string positive.
If the allow_url_fopen configuration setting
is enabled, which of the following functions will be able to open remote urls?
All of these
require_once()
require()
include()
One way to output a string in PHP is:
output()
str()
display()
echo()
Which function checks for a specific PHP data
type?
is_float()
All of these
is_int()
is_numeric()
What does MVC stand for?
Many Variable Classes
Maximum Visitor Connections
Model View Controller
Model Variable Container
How do you retrieve the value of a variable
called "name" which has been passed from a submitted form?
Request.Form;
Request.QueryString;
$_GET["name"];
$_GetParameter[];
Which function will generate random integers?
rad2deg()
search()
rand()
find()
What types of arrays are supported in PHP?
Multi-dimensional
Associative
Numeric
All of these
What's the output? $name = 'John'; echo 'Hi
there '.$name;
Hi there
Hi there John
Nothing. There is a syntax error
How do you write "Hello World" in
PHP
"Hello World";
echo "Hello World";
document.print("Hello World");
out << "Hello World";
Which is a valid loop method in PHP?
Do
For
All of these
While
PHP variables always begin with
a letter.
a dollar sign($).
underscore(_).
a number.
The PHP language can be used on the following
operating systems:
Mac OS X
All of these
Windows NT
Linux
The function mysql_connect( ) takes following
parameter(s):
server
username
All of these
password
What are int, float, string and boolean
examples of in PHP?
integers
pointers
classes
data types
Which construct includes an external PHP file?
include
require
All of these
require_once
What is the correct way to create a function
in PHP?
create myFunction(){ echo "Example
function.\n";};
function myFunction(){ echo "Example
function.\n";};
createFunction myFunction(){ echo "Example
function.\n";};
new_function myFunction(){ echo "Example
function.\n";};
What should you do in advance, to get and set
session variable
session_start()
session_start_func()
sessionstart_func()
sessionstart()
_session_start()
The logical operator OR is similar to:
!=
&&
!==
||
Which PHP function completely destroys all
data relevant to the session?
session_end();
session_destroy();
session_close();
destroy();
Which function would you use to check for data
type?
is_int()
is_numeric()
is_float()
All of these
Which function creates a directory on the FTP
server?
ftp_makekdir()
ftp_mkdirectory()
ftp_mkdir()
ftp_makedirectory()
Which is a characteristic of the PHP language?
scripting language
open source
All of these
embedded into HTML
CakePHP, Zend, and CodeIgniter are popular
_________ used on many PHP servers.
unit testing packages
development frameworks
cacheing tools
image processing libraries
version control software
How do you add a multi-line comment in PHP?
<!-- This is a comment -->
/* This is a comment */
*\ This is a comment \*
<comment> This is a comment </comment>
All variables in PHP start with which symbol?
!
$
@
%
PHP supports which of the following features?
associative arrays
include files
All of these
mathematical functions
Placing ++ in front of variable:
creates a fatal error
will cause a syntax error
preincrements the variable by one
will print as a string
What PHP function calculates the sum of the
values in an array?
array_pop()
array_math()
array_sum()
array_add()
Which operator is used to concatenate strings
in PHP?
ampersand (&)
plus (+)
logical and (and)
dot (.)
Which function is used to perform a regular
expression match in PHP?
match()
preg_match()
combine()
parse()
The statement header('Location:
http://www.somesite.com'); will
displays the IP address of somesite.com.
redirects the browser to www.somesite.com.
creates a hyperlink.
displays the header of somesite.com.
Which PHP function opens a file for reading
only?
open("c:\\test\\time.txt");
fopen("c:\\test\\time.txt" ,
"w");
fopenr("c:\\test\\time.txt" ,
"r");
fopen("c:\\test\\time.txt" ,
"r");
HTML form input needs to be validated in order
to avoid:
SQL Injections.
hacking.
All of these
database intrusions.
What do you need to call in order for your
session variables to work?
session_start()
session_begin()
$_SESSION_BEGIN
ob_start()
session()
A string literal in PHP can be specified in
the following way(s):
'this is a string'
"this is a string"
All of these
<<<EOT this is a string EOT;
Which of the following variables is expected
to contain information about the user's browser?
$_SERVER['HTTP_VARIANT']
$_SERVER['SERVER_NAME']
$_SERVER['PHP_SELF']
$_SERVER['HTTP_USER_AGENT'];
Which of the following returns information
passed via HTTP forms?
$_GET
$_POST
All of these
$_REQUEST
Which PHP language construct sends output to a
browser window?
return
echo
output
display
Which PHP function would you use to display
the value of an array in a readable format?
display()
print()
print_r()
return()
An example of a float in PHP is:
All of these
7E-10
1.2E3
12.678
Which of the following checks if a value
exists in an array?
exists_list
exists
PHP does not provide any inbuilt way of doing this.
in_array
In the following PHP script, $arr = array(1,2,3);,
1, 2, and 3 are the array
index
keys
subscript
values
What kind of error causes the termination of
the script?
None of them
Fatal Errors
Notices
Warnings
Which PHP function finds the position of the
last occurrence of a substring within a string?
pos()
strrpos()
split()
haystack()
$var = (10 % 2 == 0) ? true:false; What is the
output of $var?
false
true
Include files must have the file extension
".inc"
True
False
To modify the default PHP settings such as
whether to accept the short form open tag (<?), you need to change the
htaccess file.
php.inc file.
php.ini file.
machine.config file.
Which function gives you the current PHP
version information?
phpversion()
version()
version_compare()
phpcredits()
Which PHP function returns part of a string?
ctrl alt delete
strpos()
All of these
substr()
Which function can be used to convert 'ff' to
255?
octdec()
bindec()
dechex()
hexdec()
The practice of combining strings and
variables into one string is called:
joining
connecting
combination
concatenation
What is meant by nl2br()?
Inserts HTML line breaks (<BR />) before all
newlines in a string.
Inserts HTML line breaks (<P />) before all
newlines in a string.
Inserts HTML line breaks (<HR />) before all
newlines in a string.
Inserts HTML line breaks (<NL/>) before all
newlines in a string.
If a string is enclosed in double-quotes, PHP
will interpret more escape sequences for special characters such as
\n
\"
\r
All of these
Which of the following is NOT a command for
sending output to the standard output?
send
print
printf
echo
Which of the following stores PHP values, such
as strings, numbers or arrays?
variables
ID's
attributes
classes
Which PHP function would you use to display
information about variables in a simple, readable format?
display()
infp()
dump()
var_dump()
mysqli_num_rows() function is used to:
Get all rows contain numbers.
Count number of columns in MySql Table.
Get all columns with numeric data.
Count number of characters in single row of MySql
Query result.
Count number of rows in result of MySql Query.
Which statements start a session and end a
session?
begin_session(); end_session();
session_start(); unset_session();
start_session(); session_explode();
session_start(); session_destroy();
start_session(); end_session();
What does the acronym LAMP stand for?
Linux And MySQL PHP
Linux Apache MySQL PHP (or Perl/Python)
Linux Apache Monitoring Program
Linux Application in MySQL PHP
How to call a method from within a class?
$this( my_function() );
public my_function();
$this.my_function();
$this->my_function();
private my_function();
Which construct is typically used for
exception handling in PHP?
E_STRICT
try / catch
session();
modify()
In PHP, which statement is used to retrieve
browser properties?
$_SERVER['PHP_SELF']
$_SERVER['SERVER_NAME']
$_SERVER['HTTP_USER_AGENT'];
$_SERVER['HTTP_HOST']
Which statement is true regarding the XML
support in PHP?
XML validation is not provided
XML parsing is provided
All of these
the PHP XML extension implements xpath
How do you perform a strict comparison of
variables for type and value?
$a === $b
$a = $b
$a == $b
None of these
Which function returns information on the PHP
configuration you are using?
phpsearch();
phpconfig();
phpNotice();
phpAll();
phpinfo();
Which PHP function creates a directory on an
FTP server?
ftp_mkdir()
ftp_create_dir()
ftp_chdir()
ftp_make_dir()
__construct is a
class for the object.
pseudo element for an object.
constructor for an object.
regex method for an object.
What is the right way to set a value on an
object stdClass?
$variable.['value'] = 'value';
$variable['value'] = 'value';
$variable.value = 'value';
$variable->value = 'value';
$variable[value] = 'value';
Which of these assigns a value of type string
to variable $x?
$x[] = "true";
$x = "true";
$x = true;
How do you specify a string literal in PHP?
'Hello there'
<<<EOD Hello there EOD;
"Hello there"
All of these
Which function allows you to split a string
into an array of substrings by a string delimiter?
str(" ", $str)
explode(" ", $str)
None of these
split("", string)
Choose the correct value for $i. $i = 2; $i++;
5
4
2
3
Which control statement indicates a block of
code to be repeated a number of times?
if
include
for
switch
Which function returns one or more randomly
selected keys from an array?
array_rchunk()
array_rshuffle()
array_rand_pop()
array_diff_key()
array_rand()
What is the correct way to require the file
"time.inc" in a manner which will halt the script upon failure?
<?php include_file("time.inc"); ?>
<?php require('time.inc'); ?>
<!--require file="time.inc"-->
<% include file="time.inc" %>
Which type is not supported by PHP?
boolean
string
array
time
integer
PHP requires instructions to be terminated at
the end of each statement with a
;
</php>
}
?>
Which PHP function randomizes the order of the
elements in an array?
combine()
reverse()
mix()
shuffle()
Which statement correctly declares a float
variable in PHP?
$a = 1.234;
$a = 7E-10;
$a = 4.5e3;
All of these
Which function allows you to specify a start
position of a string and length arguments to retrieve part of a string?
str()
substr()
parse_str()
chunk_split()
True or False : list — Assign variables as if
they were an array
No
Yes
Given, the following: <?php $business =
array("retail", "advertising", "computer"); echo
current($business)."\n"; echo next($business)."\n"; echo
$business[2]."\n"; ?> What is the output?
retail retail computer
retail computer computer
retail advertising computer
retail retail retail
The FTP functions can be used to perform the
following actions on file servers:
Open a connection
Login to a connection
All of these
None of these.
Upload files
Which of the following is NOT used to specify
PHP comments?
#
<!-- -->
//
/* */
What is the output of flowing code? <?php
$cars=array("Volvo","BMW","Toyota"); sort($cars);
$clength=count($cars); for($x=0;$x<$clength;$x++) { echo $cars[$x]; echo
" "; } ?>
Volvo Toyota BMW
BMW Toyota Volvo
Volvo BMW Toyota
Which variable contains values of $_GET,
$_POST, and $_COOKIE?
$_REQUEST
$_INCLUDE
$_MERGE
$_ALL
Can PHP be run on a Windows IIS server?
true
false
Only if installed on a separate partition.
Select the type of variable scope which is not
supported by PHP:
Global variables
Hidden variables
Local variables
Function parameters
Which of the following is the recommended
standard (short_opentag=Off) for opening and closing a PHP code block?
'<!php' to open and '!>' to close
'<%php' to open and '%>' to close
'</=' to open and '/>' to close
'<?' to open and '?>' to close
'<?php' to open and '?>' to close
An array in PHP is:
a data file.
a series of variables.
None of these
a collection of key value pairs.
What type of operator is && in PHP?
assignment operator
comparison operator
logical operator
arithmetic operator
The setcookie() function must appear _____ the
<html> tag.
after
before
Can PHP scripts be embedded directly into
XHTML documents?
Yes
Depends on the Operating System
No
What is the result of the following code?
<?php $test =array("five", "six", 3, 4); $hold=
count($test); echo $test; ?>
Array
0
2
3
True or false? We can include
("sandy.php") two times in one PHP page "my.php".
False
True
Which PHP math function would you use to round
a number upwards to the nearest integer?
max()
up()
ceil()
top()
In PHP in order to access MySQL database, use
the:
sql_connect() function
mysql-connect() function
mysqlconnect() function
mysqli_connect() function
Which is an example of a statement using a
combined operator?
$a--
$a != $b
$a == $b
$a++
$a += $b
Which of the following is the correct way to
add comments to PHP?
All listed methods are valid
/* Comment code here */
# Comment code here
// Comment code here
Which following function is used to count
total number of characters in a string?
strlen();
total_chars();
num_chars();
count();
str_count();
What function is used to check if a variable
is an array?
in_array()
array()
array_check()
array_exists()
is_array()
Which statement is true about PHP constants?
All of these.
They cannot contain an array.
They cannot be changed.
They are case-sensitive by default.
What will it output? <?php $var =
"pontus, patrik, felix"; $var = explode(", ", $var); echo
count($var); ?>
A error message.
1
3
2
4
To output information about a variable use the
function
print_var()
output()
var_dump()
display_var()
When using the POST method, variables are
displayed in the URL:
True
Only when posted by a form
False
Only when posted with AJAX
What is the output? <?php $boolean= true;
while ($boolean) { $boolean =false; echo "false"; }
syntax error
falsefalse
false
true
None of the these
What will be the result of this code: <?php
$text1 = "Test"; $text2 = "Test"; if($text1 == md5($text2))
{ echo "Yes"; } else { echo "No"; }
Yes
No
PHP ERROR
If you would like to check to see if a PHP
variable has data, which of the following language constructs would you use?
null().
data().
none().
empty().
Variables in PHP are represented by a dollar
sign followed by the name of the variable. A valid name must NEVER start with
a...
underscore.
Any of these.
number.
letter.
Which of the following displays the browser
properties using PHP?
$_SERVER['HTTP_USER_AGENT']
$_SERVER['HTTP_AGENT']
$_SERVER['BROWSER_DETAIL']
$_SERVER['BROWSER_NAME']
What does the following PHP statement create?
define("FIRST-NAME","John");
special characters
a variable
a definition
a constant
The PHP operator, %, which returns the
remainder of an equation is called the:
floating integer
remainder
modulus
pre-increment
Which keyword causes a conditional loop to
skip to the start of the next iteration?
begin
continue
return
end
What PHP function counts elements in an array,
or properties in an object?
count()
add()
digits()
array_count()
Which of the following is valid PHP syntax?
None of these
if($a == 5) echo "a = 5";
if($a == 5) then echo "a = 5"; endif
if($a == 5) echo "a = 5"; endif
In PHP, you can use both single quotes ( ' ' )
and double quotes ( " " ) for strings.
False
True, but double quotes will expand PHP variables
and escape sequences inside it.
True, they are the same thing.
What is a large binary data object called in
PHP?
lib
blurb
bin
blob
What operator is used to test if two values
are identical in every way
!==
=
==
instanceof
===
To suppress error messages to the user,
preface the PHP statement with
@
%
#
!
What are the default header request protocols
defined in PHP?
HTML
XML
XHTML
application
All of these
What is the output from this example? $str =
"My name is O\'Connor."; echo stripslashes($str);
My name is O\'Connor.
None of these
My name is OConnor.
My name is O'Connor.
Which function converts a string to all
uppercase characters?
upper()
ucase()
uppercase()
strtoupper()
Which of the following statement best
describes: $panther = new Animal();
Invocation of a function
Declaration of a string
Constructor
Access modifier
Instantiation of a class
Which PHP extension provides an abstract
method for database retrieval?
POP
PDO
STMP
TRC
A fatal run-time error would be caught by
ERROR
E_NOTICE
E_ERROR
E_WARNING
Include files can have which file extensions?
.php
.txt
Any of these
.inc
What function converts 'Hatfields &
McCoys' into 'Hatfields & McCoys'?
htmlentities()
convert()
transform()
ampersand()
Which of the following is NOT a function of
PHP session support?
session_pw
session_decode
session_id
session_destroy
Which function removes all HTML and PHP tags?
remove_html_php()
tag_remove()
strip_tags()
remove_tags()
Which of the following language constructs is
used to terminate a running script?
eval()
kill()
exit()
break()
halt()
Choose the correct output. <?php $data =
"98.8degrees"; $data = (double)$data; echo $data; ?>
98.8degrees
degrees
98
98.8
True or False? Arrays in PHP can only hold the
same data type.
False
True
What is the value of $var when the following
line is executed in a PHP function? unset($var);
" "
NULL
Neither of these.
Which statement would produce the output,
"I love summer"?
All of these
<?php print ("I love summer"); ?>
<?php $message="I love summer"; echo
$message; ?>
<?php $season="summer"; echo "I
love $season" ; ?>
<?="I love summer"?>
Which function allows you to delete a file?
clearfile
remove
unlink
delete
Which function checks for the existence of a
particular key?
isset()
for_each()
element()
array_key_exists()
Which PHP function will combine two arrays?
array_push()
array_merge()
array_combine()
array_sum()
Which PHP function returns an array with
elements in reverse order?
array_descend()
array_reverse()
None of these
reverse()
Which of the following is false?
PHP applications must be compiled.
PHP code is embedded into HTML source code.
PHP can be used to develop web applications.
PHP can be deployed on most web servers.
In the date() function what does the 'm'
format character do?
Insert month as Jan through Dec
Insert month as 01 through 12
Insert minute as 0 through 59
Insert minute as 00 through 59
Which PHP function creates an array by using
one array for keys and another for its values?
array2()
$array()
combine()
array_combine()
Which of the following functions changes
directory on ftp-connection?
ftp_chmod()
ftp_login()
ftp_mkdir()
ftp_connect()
ftp_chdir()
In this example code, $result = print_r($a);
$a is the
property
function
argument
element
Which function sets the internal pointer of an
array back to its first element?
loop()
reset()
current()
next()
The comparison $a <> $b means
$a is less than $b
$a is equal to $b
$a is greater than or less than $b
$a is not equal to $b
Which datatypes are treated as arrays?
float
integer
strings
double
In PHP the error control operator is _______
!
@
*
&
HTTP cookies can be used to:
check for SQL injections.
create client side scripts.
identify a user.
validate input fields.
What does the following output? echo (5 % 3);
None of these
15
2
1
What is the GD Library?
it's add a dozen of special new $_GLOBAL variables
that gives principally informations on the user (localization, common social
media cookies, etc...) - (Global iDentification)
It is a library that gives the PHP the capability
to create and manipulate image files. - (Gif Draw)
It is a library that gives the PHP the capability
to access and create virtual domains. - (Generated Domain)
Which function displays a formatted string?
printf()
dump()
print()
echo
Which of the following outputs a formatted
string?
print("Hello %s", $name);
echo("Hello %s", $name);
printf("Hello %s", $name);
output("Hello %s", $name);
What function can be used to help prevent
MySQL injection?
mysql_escape()
mysqlescapethisstring()
mysql_real_escape_string()
escape_mysql_string()
None of the above
OCI8, PostgreSQL, and SQLSRV are all examples
of
All of these
database extensions available in PHP.
queries available in PHP.
form extensions available in PHP
Which function advances the internal array
pointer of an array?
skip()
next()
move()
current()
What is the scope of a PHP constant?
global
variable
local
None of these
What does this function do: function
my_func($variable) { return (is_numeric($variable) && $variable % 2 ==
0); }
Tests whether $variable is an even number
Tests whether $variable ends in 2
Tests whether $variable is a number and contains 2
Tests whether $variable is a number and ends in 2
The only code construct allowed before a
namespace declaration is the declare statement, for defining encoding of a
source file
false
true
True or False: There is no difference in using
the following 2 examples: echo('string'); echo 'string';
True
False
It depends on the server environment
Choose the output of the following code. Assume
that today is 2009-3-19:2:45:32 pm <?php $today = date("F j, Y");
?>
March 19, 2009
Mar 19, 09
03 19, 2009
Mar 19, 2009
Which rule determines which sections of script
are able to access which variables?
Parameters
Variable Scope
Functions
Arrays
What is the difference between the include()
and require() language constructs?
They handle failure differently.
There is no difference.
They handle file paths differently.
None of these.
The PHP mail() function allows you to...
send mail messages directly from a script.
send a mail message according to the IMAP protocol
directly from a script.
send a mail message according to the POP3 protocol
directy from a script.
None of these
Is $_SERVER['PHP_SELF'] subject to injection
vulnerabilities?
No, it's safe. It can only contain paths and
filenames specified by the web master.
Yes, it's vulnerable. On most servers PATH_INFO is
supported, which is part of PHP_SELF
Which PHP function can be used to generate a
unique ID for members of your site?
mt_random()
php_create_user()
uniqid()
unpack()
What function converts newlines to HTML line
breaks in a string?
nl2br()
insert_br()
line_break()
html_line_break()
newlines()
What is meaning of PEAR?
PHP Extension and Application Register
PHP Extension and Application Repository
PHP Execution and Application Repository
How do I typecast a variable to boolean?
Both are valid statements.
$var = ($var == $var);
It's not possible to typecast variables like this.
$var = (bool)$var;
Which PHP string function is used to convert
the first letter of a string to uppercase?
strtoupper()
strUpperCase()
ucfirst()
strUpperFirst()
Which type of array allows you to use textual
keys so that array indices can be more descriptive?
Associative
All of these
Textual
Key
How do you create a non-public method, which
can be used in a child-class?
nonpublic function Something() {
private function Something() {
protected function Something() {
parent function Something() {
preserved function Something() {
The case expression is used as part of a PHP
____.
switch statement.
try / catch condition.
All of these
if statement.
Which of the following is the scope resolution
operator in PHP?
->
All of these
::
&
.=
Choose the word(s) that describe the
fundamental style of programming for PHP.
procedural
object-oriented
imperative
All of these
You can call a parent class' implementation of
a method which is overridden by a child class using:
parent::
This is not possible
$this->
self::
above::
What will be the result of the following: echo
ucwords(strtoupper('aAaA bBbB'));
aAAA bBBB
aAaA bBbB
Aaaa Bbbb
aaaa bbbb
AAAA BBBB
Choose the output of the following script.
<?php $rest = substr("abcdef", -1); echo $rest; ?>
f
a
e
0
Which function returns the contents of the
output buffer and empties the buffer?
ob_get_clean();
ob_return_clean();
ob_own_clean();
ob_ret_clean();
What is output by the following: $c = 1; ++$c;
echo $c++;
2
3
1
4
Choose the variable assignment which is
performed 'by value' in PHP.
$value1= %$value
$value1= &$value
None of these
$value1= $value
Which PHP function sorts an array and
maintains index association?
array_alpha()
sort()
awalk()
asort()
Which PHP function returns "true" if
a value already exists in an array?
in_array()
array_search()
is_array()
array_found()
array_key_exists()
What is returned by array_product( array( 2,
3) )?
array( array( 2 ) )
2
3
6
array( 2 )
How would you create a numeric array from the
following string that did not include "-test" and where each digit
had its own array key? $str = '6.1.4.2.6-test';
$arr = implode('-', $str); $arr = implode('.',
$arr[0]);
$arr = str_replace('-', '', $str);
You can't
$arr = explode('-', $str); $arr = explode('.',
$arr[0]);
The interpreter executes one PHP command which
ends in a semi-colon. This is referred to as a
All of these
PHP array.
PHP statement.
PHP function.
Which PHP function checks to see if a file
exists and is writable?
is_writable()
write()
if_exists()
isset()
The web server sets a cookie on the web client
by sending the name/value pair as part of
java protocol.
an HTTP header.
a session.
a database object.
Which PHP function sends a raw HTTP header to
a client?
raw()
$_REQUEST
$_HTTP
header()
$val = ""; What will isset($val)
return?
false
true
0
echo substr("Hello world",-4); the
right output is?
orld
hell
world
hello
What is the default execution time for a PHP
script?
60 secs
30 secs
20 secs
10 secs
After a file is successfully opened in PHP,
how do you retrieve a line from the file?
!feof
line_number
fpointer
fgets
What will range('a', 'z') return?
This function call will throw an exception
An alphabetically ordered array of letters from 'a'
to 'z'
Distance between letters 'a' and 'z' on an
alphabetically ordered list
False
Which of the following is not a valid key type
for arrays in PHP?
strings
integers
All of these
objects
natsort( array( "i10",
"i1", "i20" ) ) = ?
array( "i20", "i10",
"i1" )
array( "i10", "i1",
"i20" )
array( "i1", "i10",
"i20" )
array( "i10", "i20",
"i1" )
false
What separates a sequence of one or more
characters used to specify the boundary between separate text regions?
separater
delimiter
extended value
parser
What is the value of $start after exiting the
for loop? <?php $start=5; for ($i=0; $i !=1; $i++) { $start= $start - 2; }
?>
2
4
3
5
1
The following code will produce: var_dump(5
=== "5");
bool(true)
string(1) "5"
bool(false)
int(5)
What variable scope would you use if you
wanted a function variable which does not discard it's value when the function
has completed execution?
None of these
local
function parameter
static
The break statement ends execution of which of
the following structures?
switch
while
All of these
for
Which PHP function tells whether a file exists
and is readable?
if_exists()
isset()
is_readable()
read()
Choose the string for which the POSIX regular
expression ^[A-Za-z]$ matches.
2I
P
&
67
function foo($bar) { if($bar['soap'] !=
'Zest') { return $bar['soap']; } } Which best describes the function foo()?
It is an anonymous function
It will return an error
It is syntactically incorrect
It opens an infinite loop
The parameter(s) passed to it is/are an associative
array
What is default session time in PHP ?
3036 Seconds
1436 Seconds
2000 Seconds
1440 Seconds
In this example code, $result = print_r ($a);
$result is the
argument.
variable.
expression.
property.
Given the following code, the Atom class can
access which variables? class Flash { public $fast; private $superSpeed;
private $ultraSonic; protected $warp; } class Atom extends Flash { }
$superSpeed, $ultraSonic
$fast, $superSpeed, $ultraSonic, $warp
$fast, $warp
$fast, $superSpeed, $ultraSonic
$fast
Which PHP function or variable will return the
value of current session id?
$_SESSION['ID']
session_id()
$_SESSION['CURRENT_ID']
curr_session_id()
What's the MIME type for images with correct
extension "jpg"?
mime/.jpg
jpg
image/jpeg
mime/jpg
image/jpg
How would you delete a cookie?
use session_destroy()
use cookie_destroy()
do not set an expiration
eat it warmed with milk
set the expiration date in the past
What will be displayed? <?php $var =
"6"; var_dump($var); $var++; var_dump($var); ?>
string(1) "6"
string(1) "6" int(7)
string(1) int(7)
int(7)
Which PHP function removes the last value of
an array and returns it?
array_pop()
array_last()
array_unshift()
array_shift()
Which of the following string delimiting
methods is known as the heredoc syntax?
delimited by single quote
delimited by <<< identifier
delimited by double quote
All of above
Self-contained collections of functions AND properties
are referred to as
objects.
elements.
references.
collections.
Given the statement,
mysqli_connect(“happy.com”, “hot24”, “015A#”, “ABC”); “happy.com” and “hot24”
respectively refer to ?
Host, database
Password, username
Database, host
Server, client
Host, username
Error reporting constants are used to adjust
error reporting settings. Which of the following is NOT a valid error reporting
constant?
E_CONSTANT
E_NOTICE
E_STRICT
E_WARNING
E_ALL
What is the result of the following code:
$array[]="value";
adds new element to the array with null as a key
is illegal, will throw an fatal error
adds new element at the end of the array
creates new array of chars from the given string
Which compound type is supported by PHP?
boolean
array
integer
float
In PHP, the die() and exit() language
constructs perform the same function.
True
False: They produce different return codes
False: They are actually MySQL functions
False: They are not part of the PHP language
To access functions of an instantiated class,
you use the following:
class::function
class.function()
class->function()
$class::function()
$class->function()
What is one of the difference between the use
of single quotes and double quotes in PHP syntax?
variables names will not be expanded in double
quotes
double quoted strings cannot contain line breaks
variable names will be expanded in double quotes
single quoted strings cannot contain line breaks
<?php $array1= array(“fast”,
"faster”); $array1[0] = “faster”; if ($array1[1] == “faster”) { $array1[1]=
“fastest”; } foreach($array1 as $output) { echo $output . " "; }
?>
fastest faster
faster fastest
faster faster
none of these
fastest fastest
Which one removes a cookie from client's
browser?
setcookie('mycookie', '', time()-3600);
removecookie('mycookie', 0, time()-3600);
deletecookie($_COOKIE['mycookie']);
unsetcookie('mycookie', 0, 1);
The PHP instruction header("Content-Type:
text/plain") should be sent:
after the page is loaded.
inside of a function.
in the HTML header.
before any output is sent
What do anonymous functions do in PHP?
None of these
provide functions which run at the end of a
script's execution
allow the creation of functions with no name
allow the creation of global functions
Which PHP function closes an open SQLite database?
close();
sqlite_close($dbhandle);
SQLite3Stmt::close();
All of these
Which function sorts an array in descending
order?
ksort()
rsort()
usort()
sort()
Which type of control structure should NOT be
used to check for a condition being met?
switch
try / catch
None of these
if /else
The PHP statement: $i[2] = "orange";
is an example of
a numeric array.
None of these
an associative array.
a distributive array.
Which of the following is not a valid PHP
variable declaration?
$_10
$10_var
${“MyVar”}
$aVaR
Upon completion of a file upload in PHP, the
UPLOAD_ERR_OK error code is returned. What does this indicate?
The file uploaded with success.
The uploaded file was only partially uploaded.
Failed to write file to disk.
No file was uploaded.
Which statement will NOT combine strings $s1
and $s2 into a single string?
$s1 + $s2
implode(' ',array($s1,$s2))
$s1.$s2
"{$s1} {$s2}"
Which is a valid character for starting a PHP
function name?
dollar sign($)
All of these
percent(%)
underscore(_)
Which of the following functions allows you to
split a string by a regular expression and put the results into an array?
preg_split()
explode()
implode()
join()
dirname(__FILE__) will return what?
the current directory
The relative location of the server root
the same thing as $_SERVER['DOCUMENT_ROOT']
The URL of the file it's placed in
The directory in which the currently invoked file
is located
Which libraries are available for using
regular expressions in PHP?
Neither of these.
Perl-Compatible (PCRE)
POSIX Regex
Both of these.
What is the result of casting the integer 1 to
an array: (array) 1
An associative array with a key of 1 and a value of
1
A numerically indexed array with one element who's
value is 1
Casting an integer to an array has no effect
An associative array with a key of 1 and a value of
NULL
Variable $a has not been declared. With error
reporting turned off, what is the result of: $a[1][2]=3;?
Syntax error
A multi-level array structure is created with 3 as
a value.
Error: Undeclared variable $a
Error: Uninitialized array $a[1]
What is default session time in PHP?
900 seconds or 15 minutes.
1800 seconds or 30 minutes.
infinity
3600 seconds or 60 minutes.
1440 seconds or 24 minutes.
What is input sanitization?
Converting input into a format that PHP supports.
All of these
The automatic process that creates the $_GET, and
$_POST superglobals.
Removing or cleaning potentially malicious user
input.
How can we set the default time zone using
PHP?
default_timezone(timezone_identifier);
timezone_set(timezone_identifier);
date_default_timezone_set(timezone_identifier);
What function creates a cookie?
setcookie()
cookie()
establishcookie()
set_cookie()
create_cookie()
Which PHP function checks to see if HTTP
headers have been sent?
header()
http_response_code()
headers_sent()
sent()
What will be the value of $result? <?php
$myArr = array( 'val1' => 1, 'val2' => array('val21' => 21, 'val22'
=> 22), 'val3' => 3 ); $result = array_key_exists('val22', $myArr); ?>
an error
false
" "
true
Which methods are available in PHP to read a
remote file?
curl_exec()
file_get_contents()
fopen()
All of these
What function can you use to create your own
streams using the PHP stream wrappers and register them within PHP?
wrapper_register
stream_wrapper_register
stream_wrapper_reg
Which character is used to separate namespaces
in PHP?
Arrow(->)
Backslash (\)
Double colon (::)
Period(.)
The function checkdate() returns what data
type?
Timestamp
String
Boolean
Integer
Date
How to capture exception message of a try /
catch? Note: consider Exception $e
$e->getMessage();
$e->error();
$e->getException();
$e->getExceptions();
$e->getErrors();
The following code does what? <?php
$textfile = "my_file.txt"; $file = fopen("$textfile",
'r+'); ?>
opens the file, "my_file.txt" for reading
only
reads the entire file, "my_file.txt" into
an array
opens the file, “my_file.txt” for reading and
writing
$table = array("old_value");
foreach($table as $row) { $row="new_value"; } echo $table[0]; will
produce:
"old_value"
Fatal error, as the variable used in foreach is
read-only
"new_value"
What function sets the default timezone used
by all date and time functions in a script?
date_default_set('Region');
date_set('Region');
default_timezone_set('Region');
timezone_set('Region');
date_default_timezone_set('Region');
Choose the correct output for:
$x=array(2=>"mouse",7=>"keyboard");
$y=array_keys($x); echo $y[1];
7
2
mouse
keyboard
How can you call this function? $greet =
function($name) { printf("Hello %s\r\n", $name); };
$greet $World;
$greet('World');
PHP does not support this syntax.
$_SERVER, $_COOKIE, $_FILES, $_ENV are
examples of PHP built-in variables called:
superglobals
$_GLOBALS
global functions
global arrays
print_r( 2 ) outputs:
int(2)
Throws an exception
Nothing, but returns false
Array { [0] => 2 }
2
In PHP5, your "construct" method
must be named the exact same thing as your "class".
False
Only on Nginx
Only on Lighttpd
When your class extends a parent class
True
What is the way to use the magic method
'__toString()' of this Class ? class exampleClass { protected $a= 1; protected
$b= 2; function __toString() { return 'a= '. $this->a . ',b= '. $this->b;
} }
All of the these.
$c = new exampleClass(); $c->__toString();
$c = new exampleClass(); (string) $c;
$c = new exampleClass(); strval($c);
The comparison $a xor $b evaluates to...
TRUE if either $a or $b is FALSE
FALSE if either $a or $b is TRUE, but not both.
TRUE if either $a or $b is TRUE, but not both.
TRUE if either $a or $b is TRUE
Which of the following functions is used to
format a number ?
num_format();
format_number();
format_num();
number_format();
format($number,$format_style);
To determine if the file pointer is at the end
of a successfully opened file, use the...
$file_end variable.
feof() function.
eof() function.
$end variable.
Which of the following will return TRUE?
is_null(3.14)
is_numeric(M_PI)
is_string(M_PI)
is_numeric("three point one four")
Which of the following functions can be used
to execute a shell command?
passthru();
exec();
system();
All of these
If one wants to convert all double quotes
(") to a backslash followed by a double quote (\") which of the
following can be used?
addslashes()
htmlspecialchars()
escape_quotes()
addbackslash()
None of these
Which PHP function will return an array of
values from $start to $end.
array_list( $start, $end);
range( $start, $end);
list( $start, $end);
numbers( $start, $end);
The PHP function which capitalizes the first
letter of each word in a string
ucfirst()
strtoupper()
caps()
ucwords()
PHP scripts can be saved, and included later,
under which allowed file extensions?
.php ONLY
.inc, .common and .php
Any File Extension
.inc and .php
The function setcookie( ) is used to
All of these.
enable or disable cookie support.
create, update, or delete a cookie header in the
HTTP response
send a cookie without url-encoding the cookie
value.
When using php cli how can you return the same
info as phpinfo()
php -c 'phpinfo();'
php -i
php -a
php -I
What is the correct way to assign a class
constant?
constant MY_CONSTANT = 'value';
private MY_CONST = 'value';
const MY_CONSTANT = 'value';
const $myConstant = 'value';
Which of these is correct usage of the chmod()
function?
chmod('/path/to/file', 755);
chmod('/path/to/file', 0755);
chmod('/path/to/file', '-rwxr-xr-x');
chmod('/path/to/file', 0x755);
Which of the following is true about the
"touch" function in PHP? Signature: touch($filename, $time) : boolean
$time is a required parameter of this function.
If the file does not exist, it will be created.
Modification timestamp is not modified, only access
time (in the filesystem)
What is the recommendation regarding PHP
closing tags in a document?
There is no recommendation.
Omit the closing tag when the file contains only
PHP code.
Only use the closing tag when short tags are
enabled.
End all PHP files with '?>'.
Which of the following functions does not have
a resource for a return type?
None of these
strrpos()
mysql_connect()
fopen()
What is PHAR?
The PHP official application and extensions
repository ("PHP Application Repository")
The PHP way to distribute entire applications
within a single file ("PHP Archive")
The PHP official reference on advanced topics
("PHP Advanced Reference")
What is the primary difference between interfaces
and abstract classes in PHP?
Abstract classes cannot have function
implementations.
Multiple Inheritance is available for an Abstract
class.
Interfaces can contain variables,
Interfaces cannot have function implementations.
Which function removes the first element from
an array, and returns the value of the removed element?
array_flip()
array_pop()
array_shift()
array_compare()
what is array_column?
Return the values from a single column in the input
array
Return the key from a single column in the input
array
Return the values from a multi column in the input
array
get the values from a single column in the input
obj
How do you get the number of arguments passed
to a PHP function?
count() function
None of these
$argc variable
$argv variable
Which PHP function is used to replace a
string?
str_replace()
substr_replace()
str_ireplace()
All of these
PHP variable $hello is set to “HELLO
WORLD". Which statement would return "Hello World" instead?
echo ucwords($hello);
echo ucfirst($hello);
echo ucwords(strtolower($hello));
echo ucfirst(strtolower($hello));
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