Bitwise Operators

Bitwise operators evaluate specific bits within an integer.

Bitwise operators are convenient to handle bit fields.

• &, &=: ampersand operator, and

• |, |=: pipe operator, or

• ^, ^=: caret operator, xor

All these operators have a short assignation version, as shown above.

These operator differ from logical operators, which convert the value to boolean before manipulation.

<?php

$a = 3;  // binary : 11
$b = 7;  // binary : 111

print $a & $b; // 3; binary : 11

?>

Documentation

See also Are Bitwise Operators Still Relevant in Modern PHP? and Bitmasks and Bitwise Operators in PHP.

Related : Logical Operators, Logical Operators, And Operator, Logical Operators, Short Assignations, Bitfield, Boolean, Bitmask, Bitshift Operators, Letter Logical Bug, Pipe Operator