How to pass month and year in url - php

Question

I am displaying a list of months and years from the database like this into a drop-down menu:
$stmt = $link->prepare("SELECT `b_date` FROM `summary` GROUP BY YEAR(`b_date`), MONTH(`b_date`)");
$stmt->execute();
$result = $stmt->get_result();
$numRows = $result->num_rows;
if($numRows > 0) {
while($row = $result->fetch_assoc()) {
$month = date('F Y', strtotime($row['b_date']));
echo "<option value='{$month}'>{$month}</option>";
}
}
When the user clicks on a choice, it redirects to another page like:
mypage.com/results.php?date=
The problem is that I don't know what to set the value as. In the current code the url produced looks like:
php?date=April%202017
That obviously isn't ideal. And the point is that on the results page I need to show results for the month that was selected. So, I need that query string to query the database.

Answer 1

You can put to select value something like 05-2017:
while($row = $result->fetch_assoc()) {
$month = date('m-Y', strtotime($row['b_date']));
echo "<option value='{$month}'>{$month}</option>";
}
And then get it with DateTime object:
$date = DateTime::createFromFormat('m-Y', $_GET['date']);
And then you can format this object to any format you want:
$formated_date = $date->format('Y-m-d');
You can chose another format, but I think you understand my idea.
UPD. To execute all record on this month try to use this code:
$date = DateTime::createFromFormat('m-Y', $_GET['date']);
$stmt = $link->prepare("SELECT * FROM `summary` WHERE YEAR(`b_date`) = :year AND MONTH(`b_date`) = :month");
$stmt->bindParam(':month', $date->format('m'));
$stmt->bindParam(':year', $date->format('Y'));
$stmt->execute();
$result = $stmt->get_result();
I think its working but maybe need to fix.

Answer 2

Change like this (use urlencode()):-
$month = date('m-Y', strtotime($row['b_date']));
echo "<option value='".urlencode($month)."'>{$month}</option>";
Now on next page check $_GET['date'] and see it's coming proper or not?
if it come proper in format like m-Y then split it with - and now you get month and year separately. Use them in your query or wherever you want.
Query need to be like something:-
$_GET['date'] = '04-2017';
$date_array = explode('-',$_GET['date']);
$month = $date_array[0];
$year = $date_array[1];
"SELECT * FROM summary WHERE MONTH(<you date column name>) = $month";

Answer 3

U can format data in select (postgres, mysql...)
SELECT TO_CHAR('MM-YYYY', b_date) AS formated_date FROM summary GROUP BY TO_CHAR('MM-YYYY', b_date