Arithmetic Operators
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Arithmetic Operators
Remember basic arithmetic from school? These work just like those.
| Example | Name | Result |
|---|---|---|
| Identity | Conversion of to or | |
| as appropriate. | ||
| Negation | Opposite of . | |
| Addition | Sum of and . | |
| Subtraction | Difference of and . | |
| Multiplication | Product of and . | |
| Division | Quotient of and . | |
| Modulo | Remainder of divided by . | |
| Exponentiation | Result of raising to the 'th power. |
The division operator returns a value unless the two operands are (or
which are type juggled to ) and the numerator is a multiple
of the divisor, in which case an integer value will be returned.
For integer division, see .
/``float``intnumeric stringsint``intdiv
Operands of modulo are converted to
before processing. For floating-point modulo, see
.
int``fmod
The result of the modulo operator has the same sign as the dividend — that is, the result of will have the same sign as . For example:
%``$a % $b``$aVoorbeeld: The Modulo Operator
<?php
var_dump(5 % 3);
var_dump(5 % -3);
var_dump(-5 % 3);
var_dump(-5 % -3);
?>
int(2)
int(2)
int(-2)
int(-2)
Math functions