Question

我有以下代码选择MYSQL中的所有行，但它只显示最后一行

dictionary_file=set(words_from_file("big_word_list.txt"))

Answer 1

Your code echo last row because, within while loop every time you overwrites $token value with new value. Try to connect using PDO＆amp;像这样将变量赋给数组。

 $token=[];
 $user='your_user_name';
 $pass='your_password';
 $conn= new PDO('mysql:host=your_host_name;dbname=your_db_name', $user, $pass);
 $query = $conn->prepare('SELECT * FROM `users`');
 $query->execute();
// alternatively you could use PDOStatement::fetchAll() and get rid of the loop
while ($row = $query->fetch(PDO::FETCH_ASSOC)) {
    $token[] = $row['instagram_access_token']; // see this line with []
}

 echo '<pre>';
 print_r($token);
 echo '</pre>';

注意：请勿使用 mysql _ * 在此处查看更多内容Why shouldn't I use mysql_* functions in PHP?

Answer 2

将您的代码更改为：

$query = mysql_query("SELECT * FROM `users` ORDER BY RAND()") or    
    die(mysql_error());
while ( $row = mysql_fetch_assoc($query) )
{
    $m = $row['instagram_access_token'];
    echo "$m";
}

选择所有MySQL行

2 个答案: