Usage of the math function in the PHP template engine smarty to generate a random number smarty

Usage of the math function in the PHP template engine smarty to generate a random number smarty

{Math equation = rand (125,324 )} How is it? Isn't it easy? in fact, math function in the smarty template is mainly used here. let's briefly explain the role and usage of the Smarty math function. Math allows the template designer to perform mathematical expression operations in the template. any numeric type variable can be used in the expression, and the result is output at the position of the math tag. the variables used in the expression are passed to the function as parameters. they can be template variables or static values. currently, the following operators can be used: +,-,/, *, 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 this function will be assigned to the template variable specified by assign, rather than directly output. However, it should be noted that the math function is inefficient to execute because php's eval () function is used. it is more efficient to perform mathematical operations in PHP. Therefore, you should perform mathematical operations in PHP as much as possible and assign the results to template variables. 2. demonstration of the smarty math function Example 1: {* $ Height = 4, $ width = 5 *} {Math equation = "x + y" x = $ height y = $ width} Output result: 9 Example 2: {* $ Row_height = 10, $ row_width = 20, # col_p # = 2, assigned in template *} {Math equation = "height * width/pision" Height = $ row_height Width = $ row_width Pision = # col_p #} Output result: 100 Example 3: {Math equation = "(x + y)/z)" x = 2 y = 10 z = 2} Output result: 6 Example 4: {* You can supply a format parameter in sprintf format *} {Math equation = "x + y" x = 4.4444 y = 5.0000 format = "%. 2f "} Output result: 9.44