PHP获取字段数目实现技巧讲解
我们通过对
mysql_num_fields()函数可以将要查询的表内所有字段的数目统计出来，该函数的语法格式如下：
int mysql_num_fields ( resource $result )
其中参数result是mysql_query()函数执行后返回的结果集。使用mysql_num_fields()函数的PHP获取字段数目示例代码如下：
- ?php
-
$connection=mysql_connect("localhost",
"root","root") or die("连接服务器失败"); - mysql_select_db("sunyang",$connection)
or die("选择数据库失败"); - $query="select * from employee";
-
$result=mysql_query($query) or
die("查询数据失败"); //执行查询 - echo mysql_num_fields($result);
//输出字段的数目 - mysql_free_result($result);
- mysql_close();
- ?>
以上就是PHP获取字段数目的相关实现方法介绍。
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