PHP REGULAR EXPRESSIONS QUIZ

Which one of the following functions finds the last occurrence of a string, returning its numerical position?

strlastpos()

strpos()

strlast()

strrpos()

TRUE ANSWER : ?
YOUR ANSWER : ?

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

10

9

8

7

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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!

Error

Username must be all lowercase!

No Output is returned

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YOUR ANSWER : ?

[:alpha:] can also be specified as.

[A-z]

[A-Za-z0-9]

[A-za-z]

[a-z]

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

Salad is good

is good SaladSaladSaladSaladSalad

SaladSaladSaladSaladSalad is good

is good Salad

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

contact@examians.com

contact@

contact

examians.com

TRUE ANSWER : ?
YOUR ANSWER : ?

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

7

10

9

8

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

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

Array([1]=> 1)

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

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

explode()

concat()

concatenate()

implode()

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YOUR ANSWER : ?

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 great

My name is Will Pitt I am not great

My name is not Will Pitt I am not great

My name is not Will Pitt I am great

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the following functions finds the last occurrence of a string, returning its numerical position?

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

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!";

[:alpha:] can also be specified as.

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

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

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

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 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/>$name = "What is your name?";<br/>if (preg_match("/name/"),$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";