PHP REGULAR EXPRESSIONS QUIZ

[:alpha:] can also be specified as.

[A-Za-z0-9]

[a-z]

[A-z]

[A-za-z]

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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

None of the mentioned

3 and 4

1 and 2

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

this is some text that we might like to parse.

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.

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Which one of the following functions can be used to concatenate array elements to form a single delimited string?

explode()

implode()

concat()

concatenate()

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What will be the output of the following PHP code? $author = "nachiketh@example.com"; $author = str_replace("a","@",$author); echo "Contact the author of this article at $author.";

Contact the author of this article at n@chiketh@ex@mple.com

Contact the author of this article at nachiketh@ex@mple.com

Cont@ct the @uthor of this @rticle @t n@chiketh@ex@mple.com

Error

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Which one of the following preg PHP functions is used to take a string, and put it in an array?

preg_divide()

preg_destroy()

preg_split()

preg_unchain()

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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 must be all lowercase!

No Output is returned

Error

Username is all lowercase!

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

Array([1]=> 1)

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

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

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

preg_replace()

preg_find_replace()

preg_find()

preg_findre()

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YOUR ANSWER : ?

How many functions does PHP offer for searching and modifying strings using Perl-compatible regular expressions.

9

10

7

8

TRUE ANSWER : ?
YOUR ANSWER : ?

[:alpha:] can also be specified as.

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));

Which one of the following functions can be used to concatenate array elements to form a single delimited string?

What will be the output of the following PHP code?<br/>$author = "nachiketh@example.com";<br/>$author = str_replace("a","@",$author);<br/>echo "Contact the author of this article at $author.";

Which one of the following preg PHP functions is used to take a string, and put it in an array?

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 preg PHP function is used to do a find and replace on a string or an array?

How many functions does PHP offer for searching and modifying strings using Perl-compatible regular expressions.