PHP REGULAR EXPRESSIONS QUIZ

What will be the output of the following PHP code? $line = "You like dogs. I hate dogs. We should marry." $sen = preg_split('/./', $line); print_r($sen);

Array([0]=>You like dogs. [1]=>I hate dogs. [2]=>We should marry.)

Error

Array([0]=>You like dogs. I hate dogs. We should marry.)

You like dogs. I hate dogs. We should marry.

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the following functions is used to search a string?

preg_search

preg_find

preg_match

preg_found

TRUE ANSWER : ?
YOUR ANSWER : ?

Which among the following is/are not a metacharacter? 1. /a 2. /A 3. /b 4. /B

1 and 3

Only 1

2, 3 and 4

2 and 4

TRUE ANSWER : ?
YOUR ANSWER : ?

What will be the output of the following PHP code? $url = "contact@examians.com"; echo ltrim(strstr($url, "@"),"@");

contact@

contact

examians.com

contact@examians.com

TRUE ANSWER : ?
YOUR ANSWER : ?

What will be the output of the following PHP code? $foods = array("pasta", "steak", "fish", "potatoes"); $food = preg_grep("/^s/", $foods); print_r($food);

Array ( [0] => pasta [1] => steak [2] => fish [3] => potatoes )

Array ( [3] => potatoes )

Array ( [1] => steak )

Array ( [0] => potatoes )

TRUE ANSWER : ?
YOUR ANSWER : ?

Say we have two compare two strings which of the following function/functions can you use? 1. strcmp() 2. strcasecmp() 3. strspn() 4. strcspn()

1 and 2

All of the mentioned

3 and 4

None of the mentioned

TRUE ANSWER : ?
YOUR ANSWER : ?

What will be the output of the following PHP code? $text = "this istsome text thatnwe might like to parse."; print_r(split("[nt]",$text));

Array ( [0] => this is [1] => some text that [2] => we might like to parse. )

[0] => this is [1] => some text that [2] => we might like to parse.

Array ( [0] => some text that [1] => we might like to parse. )

this is some text that we might like to parse.

TRUE ANSWER : ?
YOUR ANSWER : ?

What will be the output of the following PHP code? $username = "jasoN"; if (ereg("([^a-z])",$username)) echo "Username must be all lowercase!"; else echo "Username is all lowercase!";

Username is all lowercase!

Username must be all lowercase!

No Output is returned

Error

TRUE ANSWER : ?
YOUR ANSWER : ?

What will be the output if we replace the line $num = preg_grep(“/[0-5]/”, $number); with $num = preg_grep(“/[0-5]/”, $number, PREG_GREP_INVERT);?

Array([0]=>0 [5]=>5)

Array([2]=>two [3]=>three [4]=>four)

Array([1]=> 1)

Array([0]=>0 [1]=>1 [2]=>two [3]=>three [4]=>four [5]=>5)

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the following regular expression matches any string containing zero or one p?

p+

p#

P?

p*

TRUE ANSWER : ?
YOUR ANSWER : ?

What will be the output of the following PHP code?<br/>$line = "You like dogs. I hate dogs. We should marry."<br/>$sen = preg_split('/./', $line);<br/>print_r($sen);

Which one of the following functions is used to search a string?

Which among the following is/are not a metacharacter?<br/>1. /a<br/>2. /A<br/>3. /b<br/>4. /B

What will be the output of the following PHP code?<br/>$url = "contact@examians.com";<br/>echo ltrim(strstr($url, "@"),"@");

What will be the output of the following PHP code?<br/>$foods = array("pasta", "steak", "fish", "potatoes");<br/>$food = preg_grep("/^s/", $foods);<br/>print_r($food);

Say we have two compare two strings which of the following function/functions can you use?<br/>1. strcmp()<br/>2. strcasecmp()<br/>3. strspn()<br/>4. strcspn()

What will be the output of the following PHP code?<br/>$text = "this istsome text thatnwe might like to parse.";<br/>print_r(split("[nt]",$text));

What will be the output of the following PHP code?<br/>$username = "jasoN";<br/>if (ereg("([^a-z])",$username))<br/>echo "Username must be all lowercase!";<br/>else<br/>echo "Username is all lowercase!";

What will be the output if we replace the line $num = preg_grep(“/[0-5]/”, $number); with $num = preg_grep(“/[0-5]/”, $number, PREG_GREP_INVERT);?

Which one of the following regular expression matches any string containing zero or one p?