PHP Regular Expressions
What will be the output if we replace the line $num = preg_grep(“/[0-5]/”, $number); with $num = preg_grep(“/[0-5]/”, $number, PREG_GREP_INVERT);?

Array([0]=>0 [1]=>1 [2]=>two [3]=>three [4]=>four [5]=>5)
Array([2]=>two [3]=>three [4]=>four)
Array([0]=>0 [5]=>5)
Array([1]=> 1)

ANSWER DOWNLOAD EXAMIANS APP

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.";

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

ANSWER DOWNLOAD EXAMIANS APP