In PHP What would be the output of print 4 << 5 operations?

Question

I had a question in one interview, and still now I didn't get it's answer, What would be the output of print 4 << 5 operations in PHP ?

It's answer 128 I know, but how it is, please explain me

[Read the manual](http://www.php.net/manual/en/language.operators.bitwise.php) — Niels Keurentjes, May 15 '13 at 12:14
4 decimal is 100 binary; 100 binary << 5 = 10000000 binary; 10000000 binary is 128 decimal — Mark Baker, May 15 '13 at 12:15
http://stackoverflow.com/questions/8164019/bitwise-left-shift-and-right-shift-calculation-in-javascript — Yogesh Suthar, May 15 '13 at 12:18
@user - to start any simpler, I need to ask if you know what binary is, and what decimal is — Mark Baker, May 15 '13 at 12:20

score 1 · Answer 1 · answered May 15 '13 at 12:14

1

<< is a bitwise operator

if you read the manual

It will start to make sense.

answered May 15 '13 at 12:14

Anigel

1 Answers1