Logical operators

Logical operators applies four logical functions to booleans.

• and and &&

• or and ||

• xor (no symbolic version for xor)

• ! (no letter version for not)

The logical operators are either symbolic or letter. Be aware that the symbolic operators have a higher precedence than the letter one, in particular vis-à-vis comparisons.

The logical operators work on various types, and output booleans. They are different from the bitwise operators, which work on the value as a bit level, not as a whole.

<?php

if ($a == $b) {
    print "a and b are equal";
}
?>

Documentation

See also Operator Precedence

Related : Bitwise Operators