## PHP Math Equation

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I am trying to write a math equation with PHP. The equation I need to write is:

(.0054 * 260000) / (1-1.0054^-360)

This equals: 1639.958570 (On my calculator)

With the script I am writing I have it as such:

$dec = .0054; $amount = 260000; $months = 360; $equation = ($dec * $amount) / (1 - (1 + $dec)^-$months); print $equation;

The answer I am getting when I do this is "-3.9"

Any idea what I'm doing wrong?

Try using the pow() function:

$equation = ($dec * $amount) / (1 - pow(1 + $dec, $months * -1));

**Math Functions - Manual,** n"; // prints 2 echo (5 % -3)."\n"; // prints 2 echo (-5 % 3)."\n"; // prints -2 echo (-5 % -3)."\n"; // prints -2 ?> See also the manual page on Math functions. add a note� PHP_ROUND_HALF_UP: 1: Round halves up: PHP_ROUND_HALF_DOWN: 2: Round halves down: PHP_ROUND_HALF_EVEN: 3: Round halves to even numbers: PHP_ROUND_HALF_ODD: 4: Round halves to odd numbers

You can not use `^`

for power. Whay you are doing now is that you XOR instead.

Use pow for this.

**Arithmetic Operators - Manual,** Try using the pow() function: $equation = ($dec * $amount) / (1 - pow(1 + $dec, $ months * -1));. PHP Math Operations. In this tutorial you will learn how to perform mathematical operations in PHP. Performing Math Operations. PHP has several built-in functions that help you perform anything from simple additions or subtraction to advanced calculations.

Yes the caret symbol is not representative of an exponential operator in PHP. The ^ (caret) operator performs a bitwise exclusive-OR (XOR) on two integers

Example:

$equation = ($dec * $amount) / (1 - (pow(1 + $dec, -$months));

**PHP Math Equation,** {math} allows the template designer to do math equations in the template. Check the PHP documentation for further information on these math functions. However, when I try to implement this in PHP, I'm not sure where to start. I've done several Google queries and searches on here and nothing seems to help. I'm missing the proper approach to deal with this problem.

You can't use the ^ as a power function (it's a bitwise operator).

Take a look at the pow() function instead.

**{math},** Execute and calculate a string which is properly formatted as a math expression using PHP eval() function. Also, know why using eval function may be� A user is allowed to enter any mathematical equation they like (with one variable): x + 5 1 - x/2 (x/3) * (56/13)

try :

$dec = .0054; $amount = 260000; $months = 360; $equation = ($dec * $amount) / (1 - pow(1 + $dec,-$months)); print $equation;

**Calculate string as a mathematical equation in PHP,** <?php echo (5 % 3)."\n"; // prints 2 echo (5 % -3)."\n"; // prints 2 echo (-5 % 3)."\n"; // prints -2 echo (-5 % -3)."\n"; // prints -2 ?> See also the manual page on Math� The division operator ("/") returns a float value unless the two operands are integers (or strings that get converted to integers) and the numbers are evenly divisible, in which case an integer value will be returned. For integer division, see intdiv(). Operands of modulo are converted to integers

**Online LaTeX Equation Editor,** The formulas below are all mathematical variations of this formula. Convert the problem to an equation using the percentage formula: P% * X = Y; P is 10%,� We are here to assist you with your math questions. You will need to get assistance from your school if you are having problems entering the answers into your online assignment. Phone support is available Monday-Friday, 9:00AM-10:00PM ET.

**Percentage Calculator,** In this tutorial you will learn how to perform mathematical operations in PHP. Performing Math Operations. PHP has several built-in functions that help you perform� {math} {math} allows the template designer to do math equations in the template. Any numeric template variables may be used in the equations, and the result is printed in place of the tag. The variables used in the equation are passed as parameters, which can be template variables or static values.

**PHP Math Operations,** PHP_ROUND_HALF_UP - Default. Rounds number up to precision decimal, when it is half way there. Rounds 1.5 to 2 and -1.5 to -2; PHP_ROUND_HALF_DOWN - Round number down to precision decimal places, when it is half way there. Rounds 1.5 to 1 and -1.5 to -1; PHP_ROUND_HALF_EVEN - Round number to precision decimal places towards the next even value

##### Comments

- Thank you so much! That was it!