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php更新mysql后獲取影響的行數(shù)發(fā)生異常解決方法

 更新時(shí)間:2013年03月28日 14:50:35   作者:  
mysql_affected_rows函數(shù)當(dāng)UPDATE前后的數(shù)據(jù)一樣時(shí)會(huì)返回異常值,接下來(lái)為大家介紹個(gè)簡(jiǎn)單的解決方法感興趣的朋友可以參考下哈
從manual上知道了mysql_affected_rows函數(shù)當(dāng)UPDATE前后的數(shù)據(jù)一樣時(shí)會(huì)返回異常值,

下面有個(gè)方便的解決辦法,從官方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.
復(fù)制代碼 代碼如下:

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?yàn)檫@個(gè)小問(wèn)題折騰了半天,感覺(jué)php真是太不清晰了

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