PHP sql 查询无法替换更新所有行-解网

问：

尝试更新插入的特定state_id的表行有效，但出现错误，它没有使用正确的city_name....

所以这就是我们尝试过的，请记住我们仍在学习 PHP，所以任何帮助将不胜感激

它发生的情况是它对每一行使用相同的city_name而不是实际的行？

$selectquery = "SELECT * FROM `cities` WHERE `state_id` = 9";
$stmt = $conn->prepare($selectquery);
$stmt->execute();

while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
$city_name = !empty($row['city_name']) ? $row['city_name'] : '';

$new_key = "".$city_name." Businesses, ".$city_name." Business, ".$city_name." Tourism, .....";
$new_desc = "Find the best ".$city_name." Businesses. Find the best ".$city_name." Restaurants, ....";

$st3 = $pdo->prepare('UPDATE cities SET meta_desc = :desc, meta_key = :key WHERE state_id = 9');
$st3->execute([':desc' => $new_desc, ':key' => $new_key]);
}

为什么它没有遍历每一个？

php mysqli pdo sql-update

$selectquery = "SELECT * FROM `cities` WHERE `state_id` = 9";
    $stmt = $conn->prepare($selectquery);
    $stmt->execute();
    
    while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
    $city_name = !empty($row['city_name']) ? $row['city_name'] : '';
    $city_id = !empty($row['city_id']) ? $row['city_id'] : '';
    
    $new_key = "".$city_name." Businesses, ".$city_name." Business, ".$city_name." Tourism, P...";
    $new_desc = "Find the best ".$city_name." Businesses. Find the best ".$city_name." Restaurants, ...";
    
    $st3 = $pdo->prepare('UPDATE cities SET meta_desc = :desc, meta_key = :key WHERE city_id = :id AND `state_id` = 9');
    $st3->execute([':desc' => $new_desc, ':key' => $new_key, ':id' => $city_id]);
    }

我给你竖起大拇指，但不知道怎么做？

PHP sql 查询无法替换更新所有行

PHP sql query not working to replace update all rows

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