php中使用array_filter()函数过滤空数组的实现代码

             0 => '蓝色夏威夷的博客', 

             1 => false, 

             2 => 1, 

             3 => null, 

             4 => '', 

             5 => 'https://www.jb51.net', 

             6 => '0',

             7 => array(),

             8 => 0

          );

$validarr = array_filter($entry);

print_r($validarr);

//输出结果：

Array

(

    [0] => 蓝色夏威夷的博客

    [2] => 1

    [5] => https://www.jb51.net

)