PHP REGULAR EXPRESSIONS QUIZ

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

Error

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

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

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POSIX stands for

Portable Operating System Interface for Linux

Portable Operating System Interface for Unix

Portative Operating System Interface for Unix

Portative Operating System Interface for Linux

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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 Will Pitt I am not great

My name is Will Pitt I am great

My name is not Will Pitt I am great

My name is not Will Pitt I am not great

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What will be the output of the following PHP code? echo str_pad("Salad", 5)." is good.";

is good Salad

SaladSaladSaladSaladSalad is good

is good SaladSaladSaladSaladSalad

Salad is good

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

Array([1]=> 1)

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

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

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

P?

p+

p*

p#

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

2 and 4

Only 1

1 and 3

2, 3 and 4

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

8

10

9

7

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What will be the output of the following PHP code? $str = "Hello! My name is Cameron Fox. Coffee?"; $find = array('/is/','/coffee/'); $replace = array('/was/','/tea/'); echo preg_replace ($find, $replace, $str);

Hello! My name is Cameron Fox. tea?

Hello! My name is Cameron Fox. Coffee?

Hello! My name was Cameron Fox. Coffee?

Hello! My name was Cameron Fox. tea?

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

uppercase()

str_uppercase()

struppercase()

strtoupper()

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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.";

POSIX stands for

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";

What will be the output of the following PHP code?<br/>echo str_pad("Salad", 5)." is good.";

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?

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

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

What will be the output of the following PHP code?<br/>$str = "Hello! My name is Cameron Fox. Coffee?";<br/>$find = array('/is/','/coffee/');<br/>$replace = array('/was/','/tea/');<br/>echo preg_replace ($find, $replace, $str);

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