PHP Regular Expressions
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.";

Contact the author of this article at nachiketh@ex@mple.com
Cont@ct the @uthor of this @rticle @t n@chiketh@ex@mple.com
Error
Contact the author of this article at n@chiketh@ex@mple.com

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PHP Regular Expressions
What will be the output of the following PHP code?
$line = "You like dogs. I hate dogs. We should marry."
$sen = preg_split('/./', $line);
print_r($sen);

Error
Array([0]=>You like dogs. I hate dogs. We should marry.)
Array([0]=>You like dogs. [1]=>I hate dogs. [2]=>We should marry.)
You like dogs. I hate dogs. We should marry.

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PHP Regular Expressions
POSIX stands for

Portable Operating System Interface for Linux
Portative Operating System Interface for Unix
Portative Operating System Interface for Linux
Portable Operating System Interface for Unix

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