PHP Regular Expressions
What will be the output of the following PHP code?
$foods = array("pasta", "steak", "fish", "potatoes");
$food = preg_grep("/^s/", $foods);
print_r($food);

Array ( [3] => potatoes )
Array ( [0] => potatoes )
Array ( [0] => pasta [1] => steak [2] => fish [3] => potatoes )
Array ( [1] => steak )

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

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