多个帐户的捐款总额（变量）

Question

-- Table structure for table 'members'
CREATE TABLE `members` (
`mID` INTEGER NOT NULL AUTO_INCREMENT, 
`fname` VARCHAR(50), 
`lname` VARCHAR(50), 
`status` VARCHAR(20), 
`dateregistered` VARCHAR(255), 
INDEX (`lname`), 
PRIMARY KEY (`mID`)
) ENGINE=myisam DEFAULT CHARSET=utf8;

-- Table structure for table 'payments'
CREATE TABLE `payments` (
`paymentsID` INTEGER NOT NULL AUTO_INCREMENT, 
`amount` INTEGER, 
`type` VARCHAR(255), 
`officer` VARCHAR(255), 
`dayentered` DATETIME, 
`mID` INTEGER, 
INDEX (`mID`), 
PRIMARY KEY (`paymentsID`)
) ENGINE=myisam DEFAULT CHARSET=utf8;

I have the above two tables in my database. The database keeps information on donations that are categorised according to their account type (for utility bills, building projects etc) and members donate directly to a particular account of their choice (they can donate to one account or to all account or any number of accounts).

The database was working fine in MS Access but now I have to migrate it to MySQL and PHP and that's where my problem lies. I can not manage to come up with the code to list the names of the members and for each member show the total amount donated for each account per month as well as a running total for the year.

Please help with the code. Thanks.

Answer 1

Not as fast/efficient as a pure SQL solution, but this would do the job.

$query = "
SELECT 
  `members`.`mID`,
  `members`.`fname`, 
  `members`.`lname`, 
  `payments`.`amount`, 
  `payments`.`type`, 
  `payments`.`dayentered`
FROM `members` JOIN `payments` 
ON `members`.`mID` = `payments`.`mID`";
$result = mysqli($link, $query);
$results = array();
while($row=mysqli_fetch_assoc($result)) {

  $mID    = $row['mID'];
  $type   = $row['type'];
  $amount = (int) $row['amount'];
  $date   = $row['dayentered'];
  $year   = date('Y', strtotime($date));

  if(!array_key_exists($mid, $results)) 
    $results[$mid] = array($row['fname'], $row['lname']);

  if(!array_key_exists($date, $results[$mid])) 
    $results[$mid][$date] = array();

  if(!array_key_exists($type, $results[$mid][$date])) 
    $results[$mid][$date][$type] = $amount;
  else
    $results[$mid][$date][$type] += $amount;

  if(!array_key_exists($year, $results[$mid]))
    $results[$mid][$year] = $amount;
  else
    $results[$mid][$year] += $amount;

}