PDO将结果选择为变量

Question

I'm just switching to PDO from mysql, and having some issues.

I'm trying to do something that was immensely simple with mysql, all I want to do it save the result of my query into variables. I've trawled the interweb all day and every example is echoing or printing the results, whereas i need them in variables so I can then use them in the rest of my application.

I have a simple db table for storing points for where someone finishes. An id, the points to be allocated and the position of those points.

For example:

ID_1, 25, 1st

Theres only 5 rows in the table, 1st to 5th.

I want to have the points into variables like:

$point_1 = 25
$point_2 = 20
$point_3 = 18
$point_4 = 15
$point_5 = 10

This is the code im using:

$dbh = new PDO("mysql:host=$hostname;dbname=$dbname",$username,$password);

$sql = "SELECT * FROM points";
$stmt = $dbh->prepare($sql);
$stmt->execute();
// here you go:
$points = $stmt->fetchAll();

foreach ($points as $row) {

 print $row["point_position"] . "-" . $row["point_value"] ."<br/>";

}

But i want to get the values into variables? not print or echo them?

Answer 1

If I understand your issue correctly this might help:

$result = array();

foreach ( $points as $i => $row ) {
    $result[$i] = $row;
}

Now each row from the query is at their unique position in the $result array. Mind the iterator variable, $i, compared to your foreach loop.

Answer 2

尝试将查询结果关联到关联数组