标签：
int func_num_args ( void )
<?php
function demo ()
{
$numargs = func_num_args ();
echo "参数个数为: $numargs \n" ;
}
demo ( ‘a‘ , ‘b‘ , ‘c‘ );
参数个数为: 3
array func_get_args ( void )
<?php
function demo ()
{
$args = func_get_args();
echo "传入的参数分别为:";
var_dump($args);
}
demo ( ‘a‘ , ‘b‘ , ‘c‘ );
运行结果
传入的参数分别为: array (size=3) 0 => string ‘a‘ (length=1) 1 => string ‘b‘ (length=1) 2 => string ‘c‘ (length=1)
mixed func_get_arg ( int $arg_num )
<?php
function demo ()
{
$numargs = func_num_args ();
echo "参数个数为: $numargs <br />" ;
$args = func_get_args();
if ( $numargs >= 2 ) {
echo "第二个参数为: " . func_get_arg ( 1 ) . "<br />" ;
}
}
demo ( ‘a‘ , ‘b‘ , ‘c‘ );
参数个数为: 3 第二个参数为: b
标签：
原文地址：http://www.cnblogs.com/chenqionghe/p/4817275.html
