PHP Online Model Test3

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1. Whether One-line comment begin with pound sing(#) in php?
True	False

2. In PHP, during error handling include() generates______.
a fatal error, and the script will stop	a warning, but the script will continue execution
Both of the above	None of the above

3. What is the output of the below code: <?php $qpt = 'Eat to live, but not live to eat'; echo preg_match("/^to/", $qpt); ?>
0	1
to	Null

4. What is the Output of the below Code: <?php $x=array("aaa","","ccc","ddd",""); $y=array_unique($x); echo count($x) . "," . count($y); ?>
3,1	3,3
5,5	5,4

5. PHP is a _____ . It means you do not have to tell PHP which data type the variable is.PHP automatically converts the variable to the correct data type, depending on its value.
client side language	local language
global language	loosely typed language

6. Which of the following is not a valid variable name?
$number-in-class	$nic
$NumberInClass	$number_in_class

7. Which of the following function is used to change the root directory in PHP?
choot()	change_root()
cd_root()	cd_r()

8. PHP is _____ .
client side script language	server side script language
event-driven language	None

9. What is the Output of the below Code: <?php $father="mother"; $mother="son"; echo $$father; ?>
son	mother
motherson	error

10. What is the Output of the below Code: <?php $x=array(4,2,5,1,4,5,3,4); $y=array_count_values($x); echo count($y); ?>
8	5
7	28

11. The PHP syntax is most similar to:
PERL and C	Java script
VB Script	Visual Basic

12. what will be the output of below code ? <?php $arr = array(5 => 1, 12 => 2); $arr[] = 56; $arr["x"] = 42; echo var_dump($arr); ?>
42	int(42) } "/> array(3) { [12]=> int(2) [13]=> int(56) ["x"]=> int(42) }
int(42) } "/> array(4) { [5]=>int(1) [12]=> int(2) [13]=> int(56) ["x"]=> int(42) }	1,2,56,42

13. what will the ouptut of below date() function ? <?php $date="2009-5-19"; $time="14:31:38"; $datetime=$date.$time; echo date("Y-m-d:H:i:s",strtotime($datetime)); ?>
2009-5-19:14:31:38	2009-5-19:2:31:38
19-5-2009:2:31:38	19/5/2009:14:31:38

14. What is the Output of the below Code: <?php $color=array("red","yellow","white"); $x=in_array("black",$color); if($x==0) echo "good bye"; if($x==1) echo "Hello"; ?>
Hello	Error
good bye	None of the above

15. Trace the odd data type ______.
floats	integer
doubles	Real number

16. Which of the folowing are valid float values?
4.5678	4.0
7e4	All of above

17. In php string data are ______.
delimited by single quote	delimited by double quote
delimited by <<< identifier	All of above

18. Which of the following delimiting method is known as string Interpolation.
delimited by single quote	delimited by double quote
delimited by <<< identifier	All of above

19. Which datatypes are treaded as arrays.
Integer	Float
String	Booleans

20. Which of following are compound data type?
Array	Objects
Both of the above	None of the above