Course Content
Introduction to PHP
Introduction to PHP
Math Expressions
We also can write math expressions.
The sequence of actions will work the same as in mathematics, where 2 + 2 * 2 = 6
, because the multiplication is done before the addition.
main
<?php echo 2 + 2 * 2; ?>
Let's look at a more complex example:
main
<?php echo (12 + 6) * 2 - 10 / 5 + 2; ?>
First, in the expression (12 + 6) * 2 - 10 / 5 + 2
, we perform the operations inside the parentheses. Adding 12 and 6 gives us 18. So, the expression now looks like 18 * 2 - 10 / 5 + 2
.
Next, according to the rules of operator precedence, we handle multiplication and division from left to right. First, we calculate 18 * 2
, which equals 36. Then, we compute 10 / 5
, which equals 2. Thus, our expression transforms into 36 - 2 + 2
.
Moving forward, we perform subtraction: 36 - 2
, resulting in 34. Finally, we add 2 to 34, giving us the final result of 36.
Therefore, the expression (12 + 6) * 2 - 10 / 5 + 2
evaluates to 36.
Thanks for your feedback!