Question

我可以回复$row_count，但我无法打印$first。

帐户表包含fname和lname。

任何人都可以解决这个问题吗？

public function getAccountInfoAll(){
        $acc_info = $this->con->query("SELECT * FROM account");
        $results = $acc_info->fetchAll();
        $row_count = $acc_info->rowCount();
        echo $row_count.' rows selected';
        while ($row = $acc_info->fetchAll()) 
          {
          $first = $row['fname'];
          echo $first;
          }
        }

Answer 1

猜测你使用PDO，所以这就是你做错了什么：

$acc_info = $this->con->query("SELECT * FROM account");
$acc_info->execute();
$results = $acc_info->fetchAll(PDO::FETCH_ASSOC);
$row_count = $acc_info->rowCount();
echo $row_count.' rows selected';
foreach($results AS $row) {
   $first = $row['fname'];
   echo $first.'<br />';
}

Answer 2

这样的事情：

public function getAccountInfoAll(){
    $acc_info = $this->con->prepare("SELECT * FROM account");
    $acc_info->execute();

    $row_count = $acc_info->rowCount();
    echo $row_count.' rows selected';

    while ($row = $acc_info->fetch(PDO::FETCH_ASSOC)) {
      $first = $row['fname'];
      echo $first;
    }        
}

More information on prepared statements.

无法回应表格的结果

2 个答案: