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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()
struppercase()
uppercase()
strtoupper()

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

2 and 4
1 and 2
1 and 4
2 and 3

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

2, 3 and 4
2 and 4
Only 1
1 and 3

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PHP Regular Expressions
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
None of the mentioned
1 and 2
All of the mentioned

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

preg_find
preg_found
preg_match
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!";

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

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