Bitwise Operators
Bitwise operators allow you to turn specific bits within an integer on or off. If both the left- and right-hand parameters are strings, the bitwise operator will operate on the characters in this string.
| Operator | Name | Result |
|---|
| $a & $b | And | Bits that are set in both $a and $b are set. | | $a | $b | Or | Bits that are set in either $a or $b are set. | | $a ^ $b | Xor |
Bits that are set in $a or $b but not both are set.
| | ~ $a | Not |
Bits that are set in $a are not set, and vice versa.
| | $a << $b | Shift left |
Shift the bits of $a $b steps to the left (each step means
"multiply by two")
| | $a >> $b | Shift right |
Shift the bits of $a $b steps to the right (each step means
"divide by two")
|
Example
<?php
$a = 10 ;
$b = 10 ;
$c = 10 ;
if( $a==$b & $b==$c )
echo "a,b and c are equal";
else
echo "a,b and c are not equal";
?>
|
