使用 PHP 根据搜索查询在字符串中的位置对来自 MySQL 的搜索结果进行排序

发布于 2024-08-17 12:11:16 字数 478 浏览 4 评论 0原文

我希望我的搜索结果按字符串位置从小到大的顺序排列。 例如,搜索“香蕉”会返回:


婴儿食品、李子、香蕉和大米、滤过的

香蕉、脱水或香蕉粉

香蕉、生

面包、香蕉、按照食谱制备、用人造黄油制作

CAMPBELL Soup Company、V8 SPLASH 果汁饮料、草莓Banana

CAMPBELL Soup Company, V8 SPLASH Smoothies, Strawberry Banana

CAMPBELL Soup Company, V8 V. FUSION Juices, Strawberry Banana


我希望“Bananas, raw”排在第一位,因为“banana”是结果中的第一个单词,并且我希望“CAMPBELL”汤......”最后出现,因为“香蕉”是最后一个词。

我知道我可以使用 strpos() 来查找位置,但如何将它们放在一起?

I want my search results to be in order of string position from smallest to greatest.
For example, searching for "banana" returns:


Babyfood, plums, bananas and rice, strained

Bananas, dehydrated, or banana powder

Bananas, raw

Bread, banana, prepared from recipe, made with margarine

CAMPBELL Soup Company, V8 SPLASH Juice Drinks, Strawberry Banana

CAMPBELL Soup Company, V8 SPLASH Smoothies, Strawberry Banana

CAMPBELL Soup Company, V8 V. FUSION Juices, Strawberry Banana


I want "Bananas, raw" to come first because "banana" is the first word in the result, and I want "CAMPBELL Soup..." to come up last because "banana" is the last word.

I know I can use strpos() to find the position, but how do I put it all together?

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绮烟 2024-08-24 12:11:16

您可以在 MySQL 中轻松完成此操作。


 SELECT  title,LOCATE('banana',title)
 FROM myTable   
 WHERE  LOCATE('banana',title) > 0
 ORDER BY LOCATE('banana',title) 

title 代表 MySql 表的列。

You can do this easily in MySQL.


 SELECT  title,LOCATE('banana',title)
 FROM myTable   
 WHERE  LOCATE('banana',title) > 0
 ORDER BY LOCATE('banana',title) 

title represent column of MySql table.

尘世孤行 2024-08-24 12:11:16

它将涉及不必要的复杂 usort 或 PHP 中的类似内容,最好在查询中执行此操作,例如:

SELECT data, INSTR(data, 'banana') as index
FROM table
WHERE data LIKE '%banana%'
ORDER BY index != 0, index

It will involve a needlessly complex usort or something similar in PHP, best to do it in the query, for example:

SELECT data, INSTR(data, 'banana') as index
FROM table
WHERE data LIKE '%banana%'
ORDER BY index != 0, index
心病无药医 2024-08-24 12:11:16

您还可以选择 INSTR(titles, 'banana') 作为firstIndex 并按该值 ASC 排序。这将返回大海捞针中第一个找到的针的索引。标记 WHERE 子句,省略任何不是 LIKE '%banana%' 的内容,您应该进行设置:

SELECT id, pubdate, title, INSTR(title, 'tea') as `index`
FROM article
WHERE title LIKE '%tea%'
ORDER BY `index` ASC;

You could also select INSTR(titles, 'banana') as firstIndex and order by that value, ASC. This will return the index of the first located index of the needle within the haystack. Tag on a WHERE clause that omits anything that isn't LIKE '%banana%' and you should be set:

SELECT id, pubdate, title, INSTR(title, 'tea') as `index`
FROM article
WHERE title LIKE '%tea%'
ORDER BY `index` ASC;
信愁 2024-08-24 12:11:16

如果您没有从 SQL 查询中获取该数据,您可以使用 usortstripos ;像这样的事情应该做:

$arr = array(
    "Babyfood, plums, bananas and rice, strained", 
    "Bananas, dehydrated, or banana powder", 
    "Bananas, raw", 
    "Bread, banana, prepared from recipe, made with margarine", 
    "CAMPBELL Soup Company, V8 SPLASH Juice Drinks, Strawberry Banana", 
    "CAMPBELL Soup Company, V8 SPLASH Smoothies, Strawberry Banana", 
    "CAMPBELL Soup Company, V8 V. FUSION Juices, Strawberry Banana", 
);

function compare_position($a, $b) {
    return stripos($a, 'banana') - stripos($b, 'banana');
}

usort($arr, 'compare_position');
var_dump($arr);

即你在这里用你自己定义的函数进行排序,该函数比较“Banana”在它作为参数接收的两个字符串中的位置(不区分大小写)。

排序后,您将获得数组的这种输出:

$ /usr/local/php-5.3/bin/php temp.php
array(7) {
  [0]=>
  string(37) "Bananas, dehydrated, or banana powder"
  [1]=>
  string(12) "Bananas, raw"
  [2]=>
  string(56) "Bread, banana, prepared from recipe, made with margarine"
  [3]=>
  string(43) "Babyfood, plums, bananas and rice, strained"
  [4]=>
  string(61) "CAMPBELL Soup Company, V8 SPLASH Smoothies, Strawberry Banana"
  [5]=>
  string(61) "CAMPBELL Soup Company, V8 V. FUSION Juices, Strawberry Banana"
  [6]=>
  string(64) "CAMPBELL Soup Company, V8 SPLASH Juice Drinks, Strawberry Banana"
}

当然,如果您从 SQL 查询中获取该数据,那么在 SQL 端进行一些额外的计算可能会更容易......

If you don't get that data from an SQL query, you can sort that using usort and stripos ; something like this should do :

$arr = array(
    "Babyfood, plums, bananas and rice, strained", 
    "Bananas, dehydrated, or banana powder", 
    "Bananas, raw", 
    "Bread, banana, prepared from recipe, made with margarine", 
    "CAMPBELL Soup Company, V8 SPLASH Juice Drinks, Strawberry Banana", 
    "CAMPBELL Soup Company, V8 SPLASH Smoothies, Strawberry Banana", 
    "CAMPBELL Soup Company, V8 V. FUSION Juices, Strawberry Banana", 
);

function compare_position($a, $b) {
    return stripos($a, 'banana') - stripos($b, 'banana');
}

usort($arr, 'compare_position');
var_dump($arr);

i.e. you are here sorting with you own defined function, that compares the position (case-insentive) of "Banana" in the two strings it receives as parameters.

And you'll get this kind of output for your array, once sorted :

$ /usr/local/php-5.3/bin/php temp.php
array(7) {
  [0]=>
  string(37) "Bananas, dehydrated, or banana powder"
  [1]=>
  string(12) "Bananas, raw"
  [2]=>
  string(56) "Bread, banana, prepared from recipe, made with margarine"
  [3]=>
  string(43) "Babyfood, plums, bananas and rice, strained"
  [4]=>
  string(61) "CAMPBELL Soup Company, V8 SPLASH Smoothies, Strawberry Banana"
  [5]=>
  string(61) "CAMPBELL Soup Company, V8 V. FUSION Juices, Strawberry Banana"
  [6]=>
  string(64) "CAMPBELL Soup Company, V8 SPLASH Juice Drinks, Strawberry Banana"
}

Of course, if you get that data from an SQL query, it might be easier to do some additionnal calculations on the SQL side...

七色彩虹 2024-08-24 12:11:16

如果你只是想模拟 strpos:

select col, locate('banana', col) as pos from t
order by pos < 1, pos, length(col)

if you just want to emulate strpos:

select col, locate('banana', col) as pos from t
order by pos < 1, pos, length(col)
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