去除数组中空值的方法

//方法三，array_diff(),个人认为最好的方法;

$haveemp=array("022","enough","","lureen",NULL);

$delnull=array_diff($haveemp,array(NULL));

print_r($haveemp);

echo "<br />";

print_r($delnull);

//打印：

Array( [0] => 022 [1] => enough [2] => [3] => lureen [4] => )
Array( [0] => 022 [1] => enough [3] => lureen)

//去掉了空值。