Web Development With PHP

1.		Which PHP function is used to encode data in JSON format?

json_encode()

encode_json()

json()

json_format()

2.		Which of the following is NOT a valid way to access an element in an array in PHP?

$array[0]

$array{"key"}

$array["key"]

$array->key

3.		Which PHP function is used to convert a string to all uppercase letters?

strtoupper()

upper()

toUpper()

caseUpper()

4.		Which of the following is NOT a web development language?

PHP

HTML

CSS

Java

5.		Which of the following is NOT a valid way to declare a variable in PHP?

$variable = "value";

var $variable = "value";

$variable = array("value1", "value2");

$variable = 123;

6.		Which of the following is NOT a valid way to declare a variable in PHP?

$variable = "value";

var $variable = "value";

$variable = array("value1", "value2");

$variable = 123;

7.		Which PHP function is used to remove whitespace from the beginning and end of a string?

trim()

rtrim()

ltrim()

strip()

8.		Which PHP function is used to get the current date and time?

time()

date()

datetime()

now()

9.		Which PHP function is used to retrieve the length of a string?

length()

size()

strlen()

count()

10.		Which of the following is NOT a valid loop in PHP?

for

while

do-while

repeat-until