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PHP REGULAR EXPRESSIONS

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

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

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PHP Regular Expressions
Which one of the following regular expression matches any string containing zero or one p?

p*
P?
p#
p+

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PHP Regular Expressions
[:alpha:] can also be specified as.

[A-Za-z0-9]
[A-za-z]
[a-z]
[A-z]

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

7
8
9
10

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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!";

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

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