How to get all parameters in method in php

php method to obtain all parameters in a method: You can use the func_get_args function to achieve this, such as [$numargs = func_num_args();echo "number of parameters";].

The operating environment of this article: windows10 system, php 7.3, thinkpad t480 computer.

Function introduction:

func_get_args, get all parameters of a function

Specific code:

function foo()
{
    $numargs = func_num_args(); //参数数量
    echo "参数个数是: $numargs
\n";
    if ($numargs >= 2) {
        echo "第二个参数的值:" . func_get_arg(1) . "
\n";
    }
    $arg_list = func_get_args();
    for ($i = 0; $i < $numargs; $i++) {
        echo "第{$i}个参数值:{$arg_list[$i]}
\n";
    }
}
 
foo(1, 'd', 3,4);

Output:

参数个数是: 4
第二个参数的值:d
第0个参数值:1
第1个参数值:d
第2个参数值:3
第3个参数值:4

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