PHP中func_get_args(),func_get_arg(),func_num_args()的区别
我们再看一下PHP的这三个函数[unc_get_arg(),func_get_args(),func_num_args()]的区别,我们先看一下,下面的实例代码
复制代码 代码如下:
function jb51(){
print_r(func_get_args());
echo "
";
echo func_get_arg(1);
echo "
";
echo func_num_args();
}
jb51("www","jb51","net");
?>
输出结果:
Array ( [0] => blog [1] => micxp [2] => com )
micxp
3
从上面的结果中我们就可以看出
func_get_args() 这个函数返回的是包含当前函数所有参数的一个数组
func_get_arg() 函数返回的是指定位置的参数的值
func_num_args() 这个函数返回的是当前函数的参数数量 返回的是数字

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