PHP REGULAR EXPRESSIONS QUIZ

Which one of the following preg PHP function is used to do a find and replace on a string or an array?

preg_find()

preg_replace()

preg_findre()

preg_find_replace()

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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 ( [3] => potatoes )

Array ( [1] => steak )

Array ( [0] => potatoes )

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

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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. )

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

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

this is some text that we might like to parse.

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How many functions does PHP offer for searching strings using POSIX style regular expression?

8

10

9

7

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

All of the mentioned

3 and 4

None of the mentioned

1 and 2

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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([1]=> 1)

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

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

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

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What will be the output of the following PHP code? $name = "What is your name?"; if (preg_match("/name/"),$name) echo "My name is Will Pitt "; else echo "My name is not Will Pitt "; if (preg_match("/are/")) echo "I am great"else echo "I am not great";

My name is not Will Pitt I am not great

My name is not Will Pitt I am great

My name is Will Pitt I am not great

My name is Will Pitt I am great

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

2, 3 and 4

2 and 4

Only 1

1 and 3

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Which one of the following functions will convert a string to all uppercase?

uppercase()

str_uppercase()

strtoupper()

struppercase()

TRUE ANSWER : ?
YOUR ANSWER : ?

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

preg_search

preg_match

preg_find

preg_found

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the following preg PHP function is used to do a find and replace on a string or an array?

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);

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));

How many functions does PHP offer for searching strings using POSIX style regular expression?

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

What will be the output of the following PHP code?<br/>$name = "What is your name?";<br/>if (preg_match("/name/"),$name)<br/>echo "My name is Will Pitt ";<br/>else<br/>echo "My name is not Will Pitt ";<br/>if (preg_match("/are/"))<br/>echo "I am great"else echo "I am not great";

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

Which one of the following functions will convert a string to all uppercase?

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