Checking value in an array inside one SQL query with WHERE clause

Question

I want to know is this practically possible in sql(using php as server-side), where in you have an array of values(numbers), and you try to retrieve data based on values ins

Answer 1

SQL can't parse PHP arrays. Try this:

$query="SELECT * FROM posts WHERE user_id IN ({implode(',', $userIDarray)})";

Answer 2

Yea you will have to you use following syntax

SELECT 'value'
 IN (array)

Answer 3

Take a look at this page : WHERE ... IN. You can use the IN operator to check if a certain value exists within an list of values.

Answer 4

Yes, this is easily possible. You need to look at MySQL's IN function

Your query would be something like

SELECT * FROM posts WHERE user_id IN (1,2,3,4,5,6)

You can build the bit in between the parentheses in PHP using implode()