PHP function variable number of argument list

This article introduces you to the PHP function variable number of parameter list, the need for friends can refer to

PHP5.5 and earlier versions

Use the following function:

• func_num_argsReturns the total number of parameters

• func_get_argReturns an item of a parameter list

• func_get_argsReturns an array containing a list of function arguments

function test () {    echo ' parameter total; ', Func_num_args (), ' \ n ';    echo ' first parameter: ', Func_get_arg (0), ' \ n ';    echo ' all parameters; ';    Print_r (Func_get_args ());} Test (1, 2, 3, 4);/* Total number of parameters, 4 first parameter: 1 all parameters; Array (   [0] = 1   [1] = 2 [   2] = 3   [3] = 4) */

Version PHP5.6 and above

Using ... syntax to implement

Function Test (... $params) {    print_r ($params);} Test (1, 2, 3, 4);/*array         (                 [0] = 1      [1] = 2      [2] = 3      [3] = 4  ) */