在mysql select语句中使用两个php变量

Question

I am not sure if I am apporaching this in the best way, but what I am trying to do is use two php variables for a IN clause in a mysql select query.

"select * from `user` where '$phpvar1' IN ('$phpvar2')"

Normally instead of $phpvar1 I would use a column name in the user table and it works fine, however in my case now I need the $phpvar1 variable to be used as a temporary column in this specific select query. Since $phpvar1 is dynamic in each situation, I do not want to store it. What can I do? Thanks!

EDIT: To clarify, $phpvar1 is not a column in the table, but I want it to act as one only for this one query. In this query I want $phpvar1 which is equal to for example: "cat", where as "cat" is the data that would be found in the column, and then this data ("cat") would be used in the IN clause to see if $phpvar2 contains "cat"

Basically what I want it to do is this:

SELECT * from `users` where 'mouse' IN ('cat', 'dog') and `userID` = '1'

the rows returned should have a userID = 1 AND meet the IN clause, since 'mouse' is not in ('cat,'dog') there won't be any rows returned in this case.

Answer 1

Rewrite your query to:

"SELECT * FROM `users` WHERE '$phpvar1' IN ('".implode("', '", $phpvar2)."') and `userID` = '1'"

Assuming that $phpvar2 is array containing values to check for.

Answer 2

尝试

 $sql = "select * from `user` where ".$phpvar1." in (".$phpvar2.")";

Answer 3

你的php变量应该在select部分中选择$ phpvar，otherstuff，来自用户，其中x in（'$ phpvar2'）;