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PHP中func_get_args(),func_get_arg(),func_num_args()的区别

Jun 06, 2016 pm 08:27 PM

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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