PHP小知识点使用技巧

1、清空数组中的空白项；

$data = ['1','2','3','8','','0','9'];
print_r(array_filter($data,function($v){return !empty($var);}));

输出结果会为

Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 8
    [6] => 9
)