PHP REGULAR EXPRESSIONS QUIZ

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

10

9

7

8

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

concatenate()

concat()

implode()

explode()

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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()

preg_find_replace()

preg_findre()

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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_split()

preg_unchain()

preg_divide()

preg_destroy()

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

strtoupper()

struppercase()

uppercase()

str_uppercase()

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POSIX implementation was deprecated in which version of PHP?

PHP 5

PHP 5.2

PHP 5.3

PHP 4

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

No Output is returned

Error

Username is all lowercase!

Username must be all lowercase!

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PHP has long supported two regular expression implementations known as _ and _. 1. Perl 2. PEAR 3. Pearl 4. POSIX

1 and 4

2 and 4

2 and 3

1 and 2

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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()

3 and 4

All of the mentioned

None of the mentioned

1 and 2

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

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

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

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

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

POSIX implementation was deprecated in which version of PHP?

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

PHP has long supported two regular expression implementations known as _ and _.<br/>1. Perl<br/>2. PEAR<br/>3. Pearl<br/>4. POSIX

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()