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==Bitwise Operators==



<source lang="html4strict">

Example Operation Result
$a & $b And Bits that are set in both $a and $bare set.
$a | $b Or Bits that are set in either $a or $bare set.
$a ^ $b Xor Bits that are set in $$aor $b but not in 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 $ato the left $b steps.
$a >> $b Shift right Shift the bits of $ato the right $b steps.

</source>

==Bitwise operators in action==



<source lang="html4strict">

<?php
$answers = 88;
$question_four = 8;

$answers = $answers ^ $question_four;
print($answers . "<br />");
$answers = $answers | $question_four;
print($answers . "<br />");
$answers = $answers ^ $question_four;
print($answers . "<br />");
?>

</source>

==Bitwise Operators summary table==



<source lang="html4strict">

Operation Operator Class Associativity Example
Bitwise AND & Binary Left $a & $b
Bitwise | Binary Left $a | $b
inclusive OR
Bitwise exclusive ^ Binary Left $a ^ $b
OR (XOR)
Bitwise NOT ~ Unary Right ~$a
Bitwise << Binary Left $a << $b
left-shift
Bitwise >> Binary Left $a >> $b
right-shift

</source>

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