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What will be the output of the following PHP code (12)?

46. What will be the output of the following PHP code?

<?php
$str = "Includehelp";
echo pack("H*",bin2hex($str));
?> 

1. 496e636c75646568656c70
2. Includehelp
3. 496e636c75646568656c70Includehelp
4. Includehelp496e636c75646568656c70

Answer: B) Includehelp

Explanation:

The bin2hex() function converts a string of ASCII characters to hexadecimal values. And, the pack() function converts hexadecimal values back to the string.