How to check if date between two date in php and sql? - php

Question

I sent parameter date to check if that date between two date from database.
example date string parameter that i sent to API is "09/01/2020" which format is mm/dd/YYYY
this format also same for date string in database table column.
Now in database, I put date_start as "08/21/2020" and date_end as "09/05/2020"
My code is :
$date = $data["date"];
to get date string parameter that I sent to API.
Example table name is promo,
my code is :
$sql = "SELECT * FROM promo WHERE STR_TO_DATE('" . $date . "', '%M%M/%d%d/%Y%Y%Y%Y')
between date_start and date_end";
But I did not get it.
How to correct that to get it?
Edited my latest code is like this but still did not get it:
$date = $data["date"];
$date = DateTime::createFromFormat('m/d/Y', $date);
$date = $date->format('m/d/Y');
$sql = "SELECT * FROM promo WHERE $date BETWEEN STR_TO_DATE(date_start, '%m/%d/%Y') AND
STR_TO_DATE(date_end, '%m/%d/%Y')";

Answer 1

You said:
Now in database, I put date_start as "08/21/2020" and date_end as "09/05/2020"
This is not best practice, and you should always store your dates as a proper date or datetime type in MySQL. Had you done this, you would only need a range comparison in your query:
SELECT *
FROM promo
WHERE ? BETWEEN date_start and date_end;
If you must stick with your current design, then you would actually have to use STR_TO_DATE on the start and end dates:
SELECT *
FROM promo
WHERE ? BETWEEN STR_TO_DATE(date_start, '%m/%d/%Y') AND
STR_TO_DATE(date_end, '%m/%d/%Y');
To the ? placeholder above, you should bind either a valid PHP date, or a valid MySQL date literal string. But again, I strongly recommend fixing the design problem.