PHP REGULAR EXPRESSIONS QUIZ

POSIX stands for

Portative Operating System Interface for Unix

Portative Operating System Interface for Linux

Portable Operating System Interface for Unix

Portable Operating System Interface for Linux

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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.";

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

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

Error

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

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

preg_match

preg_find

preg_search

preg_found

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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 Salad

SaladSaladSaladSaladSalad is good

is good SaladSaladSaladSaladSalad

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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!";

No Output is returned

Username is all lowercase!

Username must be all lowercase!

Error

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

strrpos()

strlastpos()

strpos()

strlast()

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

Array ( [1] => steak )

Array ( [0] => potatoes )

Array ( [3] => potatoes )

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What will be the output of the following PHP code? $number = array(0,1,two,three,four,5); $num = preg_grep("/[0-5]/", $number); print_r($num);

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

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

Array([1]=> 1)

Array([0]=>0 [1]=>1 [5]=>5)

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

strtoupper()

uppercase()

str_uppercase()

struppercase()

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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 was Cameron Fox. tea?

Hello! My name is Cameron Fox. Coffee?

Hello! My name is Cameron Fox. tea?

Hello! My name was Cameron Fox. Coffee?

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POSIX stands for

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 functions is used to search a string?

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/>$username = "jasoN";<br/>if (ereg("([^a-z])",$username))<br/>echo "Username must be all lowercase!";<br/>else<br/>echo "Username is all lowercase!";

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

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/>$number = array(0,1,two,three,four,5);<br/>$num = preg_grep("/[0-5]/", $number);<br/>print_r($num);

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

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);