php对数组比较有心得的过来看看【疑难】
php对数组比较有经验的过来看看【疑难】
- PHP code
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->$arr= array();$query = $db->query("SQL语句");while($row = $db->fetch_array($query)) {$arrtmp['content']= $row['content ];。。。。$arr[] = $arrtmp;}
使用的是数组来存放查询出来的数据,有标题有摘要等等
现在遇到的问题是这样的,mysql数据库连接本地,测试速度很快,但是mysql数据库远程连接就很慢了,skip-name-resolve加了没有用,可以排除。
这个问题几天了没有解决,很是纳闷,请教大侠!
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mysql数据库连接本地,测试速度很快,但是mysql数据库远程连接就很慢了
大型点的 解决方法 RAD数据库
其他的解决方法
1.将数据库设置在本地 定时同步数据库数据
2.缓存数据
3.将本地的服务器托管到数据库相同的机房
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这是当然,主机与数据库不在同一台服务器上肯定要慢些,就你上面那点代码看不出问题。除非你还有其他代码.
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那就是数据过大传输速度慢咯.考虑看看输出压缩结果.不过我没处理过压缩数据 所以看别人是否有经验吧。
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mysql_query 取得的结果集是缓存在 mysql 那边的
mysql_fetch_array 每次读取的是那个缓存在 mysql 的记录
于是你每读一次就有一次远程数据传输,自然就很慢了
mysqli 有一个函数可以一次性的将查询结果集取回,并缓存在本地
不过函数名不记得了(因为不用mysqli),前两个月在这里讨论过
pdo 提供了 fetchall 方法,可以一次性的将结果集转换成数组
好像 mysqli 也提供了
只要你的数据库类不是基于 mysql函数 的,总是有办法解决远程读取慢的问题的
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现在别用原始的php mysql函数了
换mysqli或者pdo吧
尤其是pdo比较好用
------解决方案--------------------
假定读取一条记录的时间是 50ms
那么 50 条记录就是 50 * 50 = 2500 ms = 2.5s
ping 的结果是单边平均耗时
而通讯是双边的

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