PHP arithmetic operators

1, +: Plus

2,-: minus

3, *: Multiply

4,/: except

5,%: modulo, get the remainder of the division of two numbers

6. + +: Self-added

7 、--: Self-reduction

8, + +: Left add

9.-=: Left minus

10. *=: Left Multiply

11./=: Left apart

12,%=: Left to take the mold

Example: Programming a PHP program to determine whether two numbers are divisible .

<?php

$a = 100;
$b = 3;
$c = $a% $b;
if ($c) {
echo "is not divisible! ";
}else{
echo "Can divide! ";
}
?>

Examples of PHP self-addition and self-subtraction operators :

Example 1:

<?php

$a = 90;

$a + +; Equivalent to $a= $a +1;

echo $a;

$b = 80;

$b--; Equivalent to $b= $b-1;

echo ' <br/> '. $b;

?>

Example 2:

<?php

$a = 90;

$b = $a + +; After + +, first use the value, then add 1. The statement is equivalent to the $b= $a; $a = $a +1;

Echo $b; Output 90

echo ' <br/> '. $a; Output 91

?>

Example 3:

<?php

$a = 90;

$b =++ $a; First + +, add 1 First, then use the value. The statement is equivalent to the $a= $a +1; $b = $a;

Echo $b; Output 91

echo ' <br/> '. $a; Output 91

?>

examples of Zoga :

<?php

$a = 90;

$a +=90; Equivalent to $a= $a +90;

echo $a; Output 180

?>