欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  php教程

php +mysql mysql_fetch_lengths 教程

程序员文章站 2022-05-06 14:32:31
...
mysql_fetch_lengths 的作用是判断mysql_fetch_array ( ) , mysql_fetch_assoc ( ) , mysql_fetch_object ( )或mysql_fetch_row ( )的长度,如果成功就返回一个陈列,否则就返回false;

mysql_fetch_lengths的语法.

mysql_fetch_lengths(data)
参数.
data:必选就是mysql_query返回的值
来我们来看看实例.

$sql = "SELECT * from Person WHERE Lastname='Refsnes'";
$result = mysql_query($sql,$con);
print_r(mysql_fetch_row($result));
print_r(mysql_fetch_lengths($result));
?>
输出结果.
Array
(
[0] => Refsnes
[1] => Kai Jim
[2] => Taugata 2
[3] => 22
)
Array
(
[0] => 7
[1] => 7
[2] => 9
[3] => 2
)