hey there i am trying to implement DataOutputStream in php (DataOutputStream from java language) in java code they shift right variables like this >>>
in php i can only shift like this >>
how can i do this in php ?
thank you
+4
A:
You can implement the behavior of the unsigned right shift operator >>> with the signed shift operators like this:
The value of
n>>>sisnright-shiftedsbit positions with zero-extension. Ifnis positive, then the result is the same as that ofn>>s; ifnis negative, the result is equal to that of the expression(n>>s)+(2<<~s)if the type of the left-hand operand is int, and to the result of the expression(n>>s)+(2L<<~s)if the type of the left-hand operand is long. The added term(2<<~s)or(2L<<~s)cancels out the propagated sign bit.
Gumbo
2010-07-24 15:30:40
so this is what i have to do private function shiftRight3($a ,$b){ if(is_numeric($a) }else{ return $a >> $b; } }
shay
2010-07-24 16:28:49
@shay: Yes, exactly.
Gumbo
2010-07-24 16:43:23
thank you all :)
shay
2010-07-24 16:57:50
No, not exactly. All you need to do is shift and mask to the required number of bits.
EJP
2010-07-25 01:38:40
hey EJP can u provide an example please ?
shay
2010-07-26 17:53:36