mysql 影响行数 php更新mysql后获取影响的行数发生异常解决办法
人气:0想了解php更新mysql后获取影响的行数发生异常解决办法的相关内容吗,在本文为您仔细讲解mysql 影响行数的相关知识和一些Code实例,欢迎阅读和指正,我们先划重点:mysql,影响行数,异常,下面大家一起来学习吧。
从manual上知道了mysql_affected_rows函数当UPDATE前后的数据一样时会返回异常值, 下面有个方便的解决办法,从官方munual上看到 bdobrica at gmail dot com 留言的:
As a solution to the problem pointed in the post reffering to mysql_affected_rows() returning 0 when you are making an update query and the fields are not modified although the query is valid, i'm posting the following function. It is very simple and based on a previous post.
复制代码 代码如下:
function mysql_modified_rows () {
$info_str = mysql_info();
$a_rows = mysql_affected_rows();
ereg("Rows matched: ([0-9]*)", $info_str, $r_matched);
return ($a_rows < 1)?($r_matched[1]?$r_matched[1]:0):$a_rows;
}
PS:因为这个小问题折腾了半天,感觉php真是太不清晰了
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