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HomeBackend DevelopmentPHP Tutorial请教一个关于php搜索的问题

比如我输入关键字 “ 真心 ” 可以把“ 我真的已经把心给了你 ” 这句话搜出来,如何用php实现?请解高手解答。


回复讨论(解决方案)

那要看你用什么去实现了
如果是数据库的话 数据量不大 可以用 like

那要看你用什么去实现了
如果是数据库的话 数据量不大 可以用 like



是从数据库里某字段中检索

那要看你用什么去实现了
如果是数据库的话 数据量不大 可以用 like



现在的问题是关键字被拆分开并在包括被拆分开的字段中检索,这个用like怎么实现

加个表,字段
关联id,关键词

在数据增加修改时候,php循环你的词库,如果有这些词就把这些词放到这个表里,搜索时候搜索这个表

最基础的 SQL模糊查询

$ar = preg_split("//u", '真心', -1, PREG_SPLIT_NO_EMPTY);$where =array();foreach($ar as $v)    $where[]=" 字段 like '%$v%'";$sql="select * from tt " ;$sql .= empty($where) ? '' : ' where ' . join(' and ', $where);	echo $sql;

楼上写的 复杂一点,但通用
其实就是 把你的 关键字 循环 分割一下 分别LIKE

WHERE KWORD LIKE '%真%' AND KWORD LIKE '%心%'     这个只有两个字都匹配了 才搜出来
WHERE KWORD LIKE '%真%' OR KWORD LIKE '%心%'     这个匹配一个就可以搜出来

$ar = preg_split("//u", '真心', -1, PREG_SPLIT_NO_EMPTY);$where =array();foreach($ar as $v)    $where[]=" 字段 like '%$v%'";$sql="select * from tt " ;$sql .= empty($where) ? '' : ' where ' . join(' and ', $where);	echo $sql;



这个是不是会把带"真"的字段全部搜索出来,并把带"心"的字段全部搜索出来?

事实上我的要结果是:假如这个字段只包括一个"真"字,这个字段不会被搜索出来,比如:“我真的好喜欢” 这个不会被搜出来,或者“我的心情很好”这个也不会搜出来。

而是包括“真心” 或者包括 “真 ”和 “心” 的字段会被搜出来。

比如:我真心实意的喜欢。这句话会被搜出来。或者“ 我真的已经把心给了你 ” 这句话也会被搜出来。

这个被用在办公用品销售网站搜索产品上,现在遇到这个 问题。

楼上写的 复杂一点,但通用
其实就是 把你的 关键字 循环 分割一下 分别LIKE

WHERE KWORD LIKE '%真%' AND KWORD LIKE '%心%'     这个只有两个字都匹配了 才搜出来
WHERE KWORD LIKE '%真%' OR KWORD LIKE '%心%'     这个匹配一个就可以搜出来



我要的结果是这样的,你打开下面的网址,输入 “文件透明” 这四个字看下效果:
http://www.staples.cn/word/%E6%96%87%E4%BB%B6%E9%80%8F%E6%98%8E   

加个表,字段
关联id,关键词

在数据增加修改时候,php循环你的词库,如果有这些词就把这些词放到这个表里,搜索时候搜索这个表



不现实,这样的字库太庞大了


$ar = preg_split("//u", '真心', -1, PREG_SPLIT_NO_EMPTY);$where =array();foreach($ar as $v)    $where[]=" 字段 like '%$v%'";$sql="select * from tt " ;$sql .= empty($where) ? '' : ' where ' . join(' and ', $where);	echo $sql;



这个是不是会把带"真"的字段全部搜索出来,并把带"心"的字段全部搜索出来?

事实上我的要结果是:假如这个字段只包括一个"真"字,这个字段不会被搜索出来,比如:“我真的好喜欢” 这个不会被搜出来,或者“我的心情很好”这个也不会搜出来。

而是包括“真心” 或者包括 “真 ”和 “心” 的字段会被搜出来。

比如:我真心实意的喜欢。这句话会被搜出来。或者“ 我真的已经把心给了你 ” 这句话也会被搜出来。

这个被用在办公用品销售网站搜索产品上,现在遇到这个 问题。 楼主为什么不先试一下?



$ar = preg_split("//u", '真心', -1, PREG_SPLIT_NO_EMPTY);$where =array();foreach($ar as $v)    $where[]=" 字段 like '%$v%'";$sql="select * from tt " ;$sql .= empty($where) ? '' : ' where ' . join(' and ', $where);	echo $sql;



这个是不是会把带"真"的字段全部搜索出来,并把带"心"的字段全部搜索出来?

事实上我的要结果是:假如这个字段只包括一个"真"字,这个字段不会被搜索出来,比如:“我真的好喜欢” 这个不会被搜出来,或者“我的心情很好”这个也不会搜出来。

而是包括“真心” 或者包括 “真 ”和 “心” 的字段会被搜出来。

比如:我真心实意的喜欢。这句话会被搜出来。或者“ 我真的已经把心给了你 ” 这句话也会被搜出来。

这个被用在办公用品销售网站搜索产品上,现在遇到这个 问题。 楼主为什么不先试一下?

试过了,可用,非常感谢
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