{math}

{math} allows the template designer to do math equations in the template.

Attributes

| Attribute Name | Required | Description | |----------------|----------|--------------------------------------------------| | equation | Yes | The equation to execute | | format | No | The format of the result (sprintf) | | var | Yes | Equation variable value | | assign | No | Template variable the output will be assigned to | | \[var \...\] | Yes | Equation variable value |

• 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.
• +, -, /, \*, abs, ceil, cos, exp, floor, log, log10, max, min, pi, pow, rand, round, sin, sqrt, srans and tan are all valid operators. Check the PHP documentation for further information on these math functions.
• If you supply the `assign` attribute, the output of the `{math}` function will be assigned to this template variable instead of being output to the template.

> Note > > {math} is an expensive function in performance due to its use of the > php eval() function. Doing the math in PHP > is much more efficient, so whenever possible do the math calculations > in the script and assign() the results to the > template. Definitely avoid repetitive {math} function calls, eg > within {section} loops.

Examples

Example 1

{$height=4, $width=5}

{math equation="x + y" x=$height y=$width}

The above example will output:

9

Example 2

{$row_height = 10, $row_width = 20, #col_div# = 2, assigned in template}

{math equation="height * width / division"
    height=$row_height
    width=$row_width
    division=#col_div#}

The above example will output:

100

Example 3

{you can use parenthesis}

{math equation="(( x + y ) / z )" x=2 y=10 z=2}

The above example will output:

6

Example 4

{you can supply a format parameter in sprintf format}

{math equation="x + y" x=4.4444 y=5.0000 format="%.2f"}

The above example will output:

9.44