Create array from mysql query - php

Question

I have something like this in my MySQL DB.
Date product
2015-01-01 1
2015-01-01 2
2015-02-03 3
2015-02-04 1
2015-02-04 1
2015-02-04 3
What i need in PHP is to know which product was how often sold on which day.
So: 01.01.2015 Product 1 one time, product 2 one time, on 04.02.2015 product 1 two times, product 3 one time ...
Like this:
Date product 1 product 2 product 3
2015-01-01 1 1 0 //how many times
2015-02-03 0 0 1
2015-02-04 2 0 1
So i did a normal query: SELECT date from table order by date.
I get the object as stdClass in a array back, but now i am stuck with how to get the information out i need.
I tried something like
$array=array();
foreach ($result as $key => $value) {
$time = ($result[$key]->date);
$temp[] = array(
'date' => $time,
'product 1' => '2', //equals times
'product 2' => '3',
'product 3' => '4',
'product 4' => '4'
);
$arrayBig[] = $temp;
}
And also used array_count_values to filter the days to know which days appears, but i can not find out how to connect the product to the days.
EDIT: DWright's solution:
SELECT product, date, COUNT(*)
FROM tablename
GROUP BY product, date.
Date product count(*)
2015-01-01 1 1
2015-01-01 2 2
2015-02-03 3 1
Worked fine, now i have in each row which product was sold in which date how often.
The problem i encounter now is that if i want use this data to populate google stacked charts as seen below each row in the results represents on column in the google charts graph. So for the example above i will have two entries on 01.01.2015 in my charts (one bar for product 1 and one for product 2) but i want the amount of products on each day to be stacked. So there should be only one entry for 01.01.2015 where the amount of product 1 sold on that day and the amount of product 2 sold that day is stacked onto each other,
$result = $sql statement
foreach ($result as $key => $value ) {
$typeOfProduct = $value->product;
$amount = $value->anzahl;
$time = $value->Date;
switch ($typeOfProduct) {
case 1:
$produt1 = $amount;
break;
case 2: //twitter
$product2 = $amount;
break;
case 3:
$product3 = $amount;
break;
default:
break;
}
$rows = array();
$table = array();
$table['cols'] = array(
array('label' => 'Datum', 'type' => 'date'),
array('label' => 'product 1', 'type' => 'number'),
array('label' => 'product 2', 'type' => 'number'),
array('label' => 'product 3', 'type' => 'number')
);
$day = date('d', strtotime( $time ) );
$month = date('m', strtotime( $time ) );
$monthNew = $month - 1;
$year = date('Y', strtotime( $time ) );
$temp[] = array('v' => "Date( $year, $monthNew, $day )");
$temp[] = array('v' => $product1 );
$temp[] = array('v' => $product2);
$temp[] = array('v' => $product3 );
$rows[] = array('c' => $temp);
$table['rows'] = $rows;
}
This would result in something like this:https://jsfiddle.net/api/post/library/pure/
But i would need the values to be stacked onto each other , like this:
https://jsfiddle.net/api/post/library/pure/

Answer 1

This will be a lot easier for you to do in SQL. Something like:
SELECT product, date, COUNT(*)
FROM tablename
GROUP BY product, date.
Then each row is for one product by date, with the count sold that date.