PHP template engine Smarty Generate random number smarty in math function usage

{Math Equation=rand (125,324)} Copy Code What do you think? is not very simple, in fact, the main use of the Smarty template in the math function, the following smarty math function and usage to do a brief explanation. Math allows the template designer to perform mathematical expression operations in the template. A variable of any numeric type can be used in an expression, and the result is output at the location of the math tag. The variables used in the expression are passed as arguments to the function, which can be either template variables or static values. The currently available operators are: +,-,/, *, ABS, ceil, COS, exp, floor, log, log10, max, Min, pi, pow, rand, round, sin, sqrt, Srans, and Tan. For more information about mathematical functions, see the PHP documentation. If the special attribute "Assign" is specified, the output value of the function is assigned to the template variable specified by assign instead of the direct output. However, it is important to note that the math function is inefficient because of the use of the Eval () function of PHP. Doing math in PHP is more efficient, so do the math in PHP as much as possible and assign the results to template variables. Two, Smarty Math function Demo Example 1: {* $height =4, $width = 5 *} {Math equation= "x + y" x= $height y= $width} Copy Code Output results: 9 Example 2: {* $row _height = ten, $row _width = #col_div # = 2, assigned in template *} {Math equation= "Height * width/division" height= $row _height Width= $row _width division= #col_div #} Copy Code Output results: 100 Example 3: {Math equation= "((x + y)/z)" X=2 y=10 z=2} Copy Code Output results: 6 Example 4: {* You can supply a format parameter in sprintf format *} {Math equation= "x + y" x=4.4444 y=5.0000 format= "%.2f"} Copy Code Output results: 9.44

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