I only get one value in Mysql [duplicate] - php

Question

This question already has answers here:
How do I iterate over the results in a MySQLi result set?
(2 answers)
Closed 1 year ago.
I am making a small browser game and I have a database where the high scores of the users are stored.
here an image of the database (name is the username and M1_CPM the score)
with the following code I am trying to get the top 10 values to later desplay them on a leaderboard:
$sql = "SELECT * FROM leaderboard ORDER BY M1_CPM DESC LIMIT 10";
$stmt = mysqli_stmt_init($conn);
if (!mysqli_stmt_prepare($stmt, $sql)) {
exit();
}
mysqli_stmt_execute($stmt);
$resultData = mysqli_stmt_get_result($stmt);
echo implode(",", mysqli_fetch_assoc($resultData));
The problem is that it always only echoes the highest score and not the top ten. Why?

Answer 1

The mysql_fetch_assoc() function returns only one row from a recordset as an associative array. to retrieve all rows use a while loop:
while($row = mysqli_fetch_assoc($resultData))
{
echo implode(",", $row);
}
Note: After the data is retrieved, this function moves to the next row in the recordset. Each subsequent call to mysql_fetch_assoc() returns the next row in the recordset.

Answer 2

Each time when mysqli_fetch_assoc($result) is accessed, the pointer moves to the next record. At last when no records are found, it returns null which breaks the while condition.
So you need first get the data with while and then use implode, sth like this
$rows = [];
while ($row = mysqli_fetch_assoc($resultData)) {
$rows[] = $row;
}
And then you can use implode, so your code will become like this
$sql = "SELECT * FROM leaderboard ORDER BY M1_CPM DESC LIMIT 10";
$stmt = mysqli_stmt_init($conn);
if (!mysqli_stmt_prepare($stmt, $sql)) {
exit();
}
mysqli_stmt_execute($stmt);
$resultData = mysqli_stmt_get_result($stmt);
$rows = [];
while ($row = mysqli_fetch_assoc($resultData)) {
$rows[] = $row;
}
echo implode(",", $rows);