带2个条件的单词搜索PHP PDO

我想知道是否有可能给我的网站上的搜索引擎2个条件。 网站上的每个用户都有一个股票行情列表，目标是向他展示与每个用户的股票列表相对应的文章

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例如，搜索引擎将搜索文章并仅在文章中有两个或更多股票代码时显示（如果文章只有一个股票代码，则也将显示）

我很想知道是否有人知道怎么做。提前谢谢

用户编号1的股票列表是“aapl:us，spy:us，intc:us，goog:us”，然后只有包含2股以上股票的文章才会显示给他（如果文章中只提到一只股票，那么也会显示给他）

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利用
REGEXP
函数，它可以解决您的问题

用于搜索

mysql> -- test variable
mysql> set @test='aapl:us,spy:us,intc:us,goog:us';
Query OK, 0 rows affected (0.00 sec)

mysql> -- variable contents
mysql> select @test;
+--------------------------------+
| @test                          |
+--------------------------------+
| aapl:us,spy:us,intc:us,goog:us |
+--------------------------------+
1 row in set (0.00 sec)

mysql> -- if you create sum it can be used in having clause
mysql> select ((@test REGEXP '(^|,)aapl:us(,|$)') + (@test REGEXP '(^|,)spy:us(,|$)') ) as sum;
+------+
| sum  |
+------+
|    2 |
+------+
1 row in set (0.00 sec)

mysql> -- for 2 ticker
mysql> select * from( select ((@test REGEXP '(^|,)aapl:us(,|$)') + (@test REGEXP '(^|,)spy:us(,|$)') ) as sum ) as q having sum =2;
+------+
| sum  |
+------+
|    2 |
+------+
1 row in set (0.00 sec)

mysql> -- for 3 or more ticker
mysql> select * from( select ((@test REGEXP '(^|,)aapl:us(,|$)') + (@test REGEXP '(^|,)spy:us(,|$)') ) as sum ) as q having sum >=3;
Empty set (0.00 sec)

从

到

及

从

到

那是什么

SELECT * FROM table WHERE ticker REGEXP (^|,)aapl:us|spy:us|intc:us|goog:us(,|$)

对于特定数量的股票，请创建如下查询字符串

SELECT *,((ticker REGEXP '(^|,)aapl:us(,|$)') + (ticker REGEXP '(^|,)spy:us(,|$)') ) as sum 
FROM 
        table 
HAVING sum = 2

测试总和以了解我们在做什么

mysql> -- test variable
mysql> set @test='aapl:us,spy:us,intc:us,goog:us';
Query OK, 0 rows affected (0.00 sec)

mysql> -- variable contents
mysql> select @test;
+--------------------------------+
| @test                          |
+--------------------------------+
| aapl:us,spy:us,intc:us,goog:us |
+--------------------------------+
1 row in set (0.00 sec)

mysql> -- if you create sum it can be used in having clause
mysql> select ((@test REGEXP '(^|,)aapl:us(,|$)') + (@test REGEXP '(^|,)spy:us(,|$)') ) as sum;
+------+
| sum  |
+------+
|    2 |
+------+
1 row in set (0.00 sec)

mysql> -- for 2 ticker
mysql> select * from( select ((@test REGEXP '(^|,)aapl:us(,|$)') + (@test REGEXP '(^|,)spy:us(,|$)') ) as sum ) as q having sum =2;
+------+
| sum  |
+------+
|    2 |
+------+
1 row in set (0.00 sec)

mysql> -- for 3 or more ticker
mysql> select * from( select ((@test REGEXP '(^|,)aapl:us(,|$)') + (@test REGEXP '(^|,)spy:us(,|$)') ) as sum ) as q having sum >=3;
Empty set (0.00 sec)

生成查询的脚本

akshay@db-3325:/tmp$ cat test.php 
<?php

 $list = 'aapl:us,spy:us,intc:us,goog:us';

 $sum  = '('.implode("+", array_map(function($v){ return sprintf("(ticker REGEXP '(^|,)%s(,|$)')",$v); },explode(",",$list))).')';

 $query = "SELECT *, $sum as sum from table having sum = 2";

 print $query.PHP_EOL;
?>

搜索引擎将搜索文章，仅当文章中有2个或更多股票代码时才会显示（如果文章只有一个股票代码，则也会显示）@阿克什TIA@AnnaLA看，我编辑了我的答案，这可以解决我猜。。。“数组（[0]=>42000[1]=>1064[2]=>您的SQL语法有错误；请查看与您的MariaDB服务器版本对应的手册，以了解在“^ |，”）附近使用的正确语法aapl:us | spy:us | intc:us | goog:us（，|$）”@AnnaLA，请参阅第二部分，其中每个单词都将summed@AnnaLA还添加了将生成查询字符串的php脚本
SELECT * FROM table WHERE ticker REGEXP (^|,)aapl:us|spy:us|intc:us|goog:us(,|$)

SELECT *,((ticker REGEXP '(^|,)aapl:us(,|$)') + (ticker REGEXP '(^|,)spy:us(,|$)') ) as sum 
FROM 
        table 
HAVING sum = 2

mysql> -- test variable
mysql> set @test='aapl:us,spy:us,intc:us,goog:us';
Query OK, 0 rows affected (0.00 sec)

mysql> -- variable contents
mysql> select @test;
+--------------------------------+
| @test                          |
+--------------------------------+
| aapl:us,spy:us,intc:us,goog:us |
+--------------------------------+
1 row in set (0.00 sec)

mysql> -- if you create sum it can be used in having clause
mysql> select ((@test REGEXP '(^|,)aapl:us(,|$)') + (@test REGEXP '(^|,)spy:us(,|$)') ) as sum;
+------+
| sum  |
+------+
|    2 |
+------+
1 row in set (0.00 sec)

mysql> -- for 2 ticker
mysql> select * from( select ((@test REGEXP '(^|,)aapl:us(,|$)') + (@test REGEXP '(^|,)spy:us(,|$)') ) as sum ) as q having sum =2;
+------+
| sum  |
+------+
|    2 |
+------+
1 row in set (0.00 sec)

mysql> -- for 3 or more ticker
mysql> select * from( select ((@test REGEXP '(^|,)aapl:us(,|$)') + (@test REGEXP '(^|,)spy:us(,|$)') ) as sum ) as q having sum >=3;
Empty set (0.00 sec)

akshay@db-3325:/tmp$ cat test.php 
<?php

 $list = 'aapl:us,spy:us,intc:us,goog:us';

 $sum  = '('.implode("+", array_map(function($v){ return sprintf("(ticker REGEXP '(^|,)%s(,|$)')",$v); },explode(",",$list))).')';

 $query = "SELECT *, $sum as sum from table having sum = 2";

 print $query.PHP_EOL;
?>

akshay@db-3325:/tmp$ php test.php 
SELECT *, ((ticker REGEXP '(^|,)aapl:us(,|$)')+(ticker REGEXP '(^|,)spy:us(,|$)')+(ticker REGEXP '(^|,)intc:us(,|$)')+(ticker REGEXP '(^|,)goog:us(,|$)')) as sum from table having sum = 2