Home php教程 php手册 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

Jun 13, 2016 am 10:07 AM
mysql Seek effect how designation Tutorial of Record

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>
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mysql_field_seek(data,field_offset)
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参数:
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data:必须 指的是mysql_query正确返回的数据集.
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field_offset:指定位置.不写代码从0开始
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看个mysql_feild_seek实例.
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<pre class="brush:php;toolbar:false">$sql = "SELECT * from Person";
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$result = mysql_query($sql,$con);
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mysql_field_seek($result,3);
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print_r(mysql_fetch_field($result));
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mysql_close($con);
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?>
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输出结果.
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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>)
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