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PHP Regular Expressions

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

str_uppercase()
uppercase()
strtoupper()
struppercase()

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

contact@
contact
examians.com
contact@examians.com

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

preg_found
preg_match
preg_find
preg_search

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PHP Regular Expressions
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!";

Error
Username must be all lowercase!
Username is all lowercase!
No Output is returned

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

preg_find_replace()
preg_findre()
preg_find()
preg_replace()

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MORE MCQ ON PHP Regular Expressions

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