PHP MySQLi准备语句获取行，但不显示数据

我试图从另一个数据库值中使用ID获取一些数据。这里是我的代码：PHP MySQLi准备语句获取行，但不显示数据

$query = "SELECT id,uid,product,jpgID,saledatetime,quantity 
       FROM sales 
      WHERE printed = ? 
       AND DATE_FORMAT(saledatetime, '%Y/%m/%d') = ?"; 
if ($stmt = $mysqli->prepare($query)) { 
     $printed = 0; 
     $stmt->bind_param("is",$printed,$session_date); 
     $stmt->execute(); 
     $stmt->store_result(); 

     //Get result 
     $stmt->bind_result($result_id,$result_uid,$result_product,$result_jpgID,$result_saledatetime,$result_quantity); 

     //Number of rows returned 
     $count_rows = $stmt->num_rows; 
     if ($stmt_fetch = $mysqli->prepare("SELECT jpg,udate,imageset FROM images WHERE id = ?")) { 
      //Fetch image information 
      while ($stmt->fetch()) { 
       $stmt_fetch->bind_param('i',$result_jpgID); 
       $stmt_fetch->execute(); 
       $stmt_fetch->store_result(); 
       $stmt_fetch->bind_result($jpg,$udate,$imageset); 
       echo $stmt_fetch->num_rows."<br />"; 

       //Create array's with information 
       $print[$result_product][$result_jpgID]["quantity"] = $result_quantity; 
       $print[$result_product][$result_jpgID]["location"] = $jpg; 
      } 
     } 
     $stmt->close(); 
     print_r($print); 
    }

的echo $stmt_fetch->num_rows."<br />";显示1每次循环的时间，所以就找到了匹配的行。但对于没有绑定的变量的一些原因，没有任何价值......这是显示结果：

1 
1 
1 
Array 
(
    [KR] => Array 
     (
      [137] => Array 
       (
        [quantity] => 1 
        [location] => 
       ) 

      [138] => Array 
       (
        [quantity] => 1 
        [location] => 
       ) 

     ) 

    [LR] => Array 
     (
      [138] => Array 
       (
        [quantity] => 1 
        [location] => 
       ) 

     ) 

)

来源

2014-02-06 Martyn Ball

并且您完全确定查看jpg，udate，imageset的第二个查询实际上与手动运行时提供的ID一起使用？即。在phpmyadmin或控制台？另外，对原始查询（我甚至不知道）进行连接并不容易，然后只是循环一个结果集，而不是将这2个结合起来使用 – Tularis

@Tularis，嗯它不运行如果我手动定义标识..：S这是我知道这样做的唯一途径，我将如何结合这些查询呢？ –

还添加了第一个查询。 –

设法解决它，这是我固定的代码。

if(login_check($mysqli) == true) { 
    //logged in 
    $session_date = $_SESSION['session_date']; 

    $query = "SELECT id,uid,product,jpgID,saledatetime,quantity 
       FROM sales 
      WHERE printed = ? 
       AND DATE_FORMAT(saledatetime, '%Y/%m/%d') = ?"; 
    if ($stmt = $mysqli->prepare($query)) { 
     $printed = 0; 
     $stmt->bind_param("is",$printed,$session_date); 
     $stmt->execute(); 
     $stmt->store_result(); 
     $stmt->bind_result($result_id,$result_uid,$result_product,$result_jpgID,$result_saledatetime,$result_quantity); 
     $count_rows = $stmt->num_rows; 

     while ($stmt->fetch()) { 
      //Create array's with information 
      $print[$result_product][$result_jpgID]["quantity"] = $result_quantity; 
     } 
     $stmt->close(); 

     foreach ($print as $key1 => $value1) { 
      foreach ($print[$key1] as $key => $value) { 
       if ($stmt = $mysqli->prepare("SELECT jpg,udate,imageset FROM images WHERE id = ?")) { 
       $stmt->bind_param('i',$key); 
        $stmt->execute(); 
        $stmt->store_result(); 
        $stmt->bind_result($jpg,$udate,$imageset); 
       } 
       while ($stmt->fetch()) { 
        $print[$key1][$key]['location'] = $jpg; 
       } 
      } 
     } 
     print_r($print); 
    } 
} else { 
    header("Location: index.php"); 
}

来源

2014-02-07 17:14:42

PHP MySQLi准备语句获取行，但不显示数据

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