在php中重置资源行数

疯子的紫梦 posted @ 2010年1月27日 05:29 in php , 1339 阅读

今天在给一个群里面的朋友解决的问题的时候,遇到了一个问题

就是双循环数据资源,代码如下:

$sql1=mysql_query("select * from phome_enewsmember order by userid desc");
    $sql2=mysql_query("select * from phome_enewsmemberadd order by userid desc");
while($row1=mysql_fetch_assoc($sql1)){
    while($row2=mysql_fetch_assoc($sql2)){

        echo $row2['userid'].'<br />';
    }
   
    echo $row1['userid'].'<br />';
}

刚开始想,应该是循环12次的,两个表各有数据3条,3*3+3

但是运行下来,只有6次,内循环少循环了两次.

刚开始,我以为是$row2没有重置,用了reset($row2).结果不行

后来,在手册里面看到,是需要用mysql_data_seek($sql2,0); 重置一下资源的.解决..

[回复]

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2022年9月03日 11:01

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在php中 重置资源行数

在php中重置资源行数