逗号需要从最后一个while循环中删除[重复]

Question

我的while循环有问题，每个项目都需要有逗号，但最后一个不需要，但我不知道我需要做什么......

        while($row = $result->fetch_assoc()) {
        echo "
        {
            id: " . $row['id'] . ",
            dexNr:  " . $row['mon_id'] . ",
            name:  '" . $row['mon_id'] . "',
            expiration:  " . $row['expire_timestamp'] . ",
            lat: " . $row['lat'] . ",
            lng: " . $row['lon'] . "
        },
        ";
    }

Answer 1

您可以将每个项目推入一个数组，然后用逗号将其内爆。然后，这只会在项目之间放置逗号，而不是在末尾：

$output = array();

while($row = $result->fetch_assoc()) {
    array_push($output, "
        {
        id: " . $row['id'] . ",
        dexNr:  " . $row['mon_id'] . ",
        name:  '" . $row['mon_id'] . "',
        expiration:  " . $row['expire_timestamp'] . ",
        lat: " . $row['lat'] . ",
        lng: " . $row['lon'] . "
        }
    ");
}

$output = implode(",", $output);