Home  >  Article  >  php教程  >  mysql如何跳到指定记录 mysql_field_seek教程

mysql如何跳到指定记录 mysql_field_seek教程

WBOY
WBOYOriginal
2016-06-13 10:07:201179browse

mysql_field_seek的作用就是在mysql_query返回的记录集中,调到我们指定的记录上,如果有就返回当前记录,没有就是false;

<pre class="brush:php;toolbar:false"><strong>mysql_field_seek语法:</strong>
mysql_field_seek(data,field_offset)
参数:
data:必须 指的是mysql_query正确返回的数据集.
field_offset:指定位置.不写代码从0开始
看个mysql_feild_seek实例.

<pre class="brush:php;toolbar:false">$sql = "SELECT * from Person";
 
$result = mysql_query($sql,$con);
 
mysql_field_seek($result,3);
 
print_r(mysql_fetch_field($result));
 
mysql_close($con);
 
?>
 
输出结果.
stdClass Object<br>(<br>[name] => Age<br>[table] => Person<br>[def] =><br>[max_length] => 2<br>[not_null] => 0<br>[primary_key] => 0<br>[multiple_key] => 0<br>[unique_key] => 0<br>[numeric] => 1<br>[blob] => 0<br>[type] => int<br>[unsigned] => 0<br>[zerofill] => 0<br>)
 
 
 
Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn