w3resource

PHP: Arithmetic Operators

Description

There are five basic arithmetic operators.

  • + (addition)
  • - (subtraction)
  • * (multiplication)
  •  / (division)
  • % (modulus)

The operators are summarized in the following table.

Operator Name Example Result
+ Addition $x + $y Sum of $x and $y.
- Subtraction $x - $y Difference of $x and $y.
* Multiplication $x * $y Product of $x and $y.
/ Division $x / $y Quotient of $x and $y
% Modulus $x % $y Remainder of $x divided by $y.

Example:

<?php
$x=100;
$y=60;
echo "The sum of x and y is : ". ($x+$y) ."<br />";
echo "The difference between x and y is : ". ($x-$y) ."<br />";
echo "Multiplication of x and y : ". ($x*$y) ."<br />";
echo "Division of x and y : ". ($x/$y) ."<br />";
echo "Modulus of x and y : " . ($x%$y) ."<br />";
?>

Output:

The sum of x and y is : 160
The difference between x and y is : 40
Multiplication of x and y : 6000
Division of x and y : 1.6666666666667
Modulus of x and y : 40

View the example in browser

Note : In the case of division, the operator returns a float value if the two operands are not integers.

Previous: PHP Constants
Next: Comparison Operators



PHP: Tips of the Day

Output a Multidimensional Array with index and value and print into the table

Example:

Array
(
 [0] => Array
 (
 [id] => 13
 [category_id] => 7
 [name] => Leaving Of Liverpool
 [description] => Leaving Of Liverpool
 [price] => 1.00
 [virtual] => 1
 [active] => 1
 [sort_order] => 13
 [created] => 2007-06-24 14:08:03
 [modified] => 2007-06-24 14:08:03
 [image] => NONE
 )
[1] => Array
 (
 [id] => 16
 [category_id] => 7
 [name] => Yellow Submarine
 [description] => Yellow Submarine
 [price] => 1.00
 [virtual] => 1
 [active] => 1
 [sort_order] => 16
 [created] => 2007-06-24 14:10:02
 [modified] => 2007-06-24 14:10:02
[image] => NONE
 )
)
<table>
<?php
foreach ($products as $key => $value) {
 foreach ($value as $k => $v) {
 echo "<tr>";
 echo "<td>$k</td>"; // Get index.
 echo "<td>$v</td>"; // Get value.
 echo "</tr>";
 }
}
?>
</table>