Question

由于某种原因，我的for循环项目没有被执行。

// Message to the client
$message = "<html><body>";
$message .= "<p>";

foreach($data as $item) {
      $message .= "<b>
      &#10139;<a style='color:#FF6400; text-decoration: none' href='{$item['link']}'>{$item['title']}</a></b><br>";
      $message .= "Format: {$item['format']} <br>";
      $message .= "Cost: &#36;{$item['costs']} <br>";
      $message .= "Estimated Duration: {$item['duration']} hours<br>";
      $message .= "<br>";

    }

以下是定义$data的地方：

// Converting the array into individual strings
$formats = implode("','", $formatsArray);
$topics = implode("','", $topicsArray);



// Check to see if user is careless about the format
// Always use prepare statements to store data
if($_POST['costs'] == "any") {
  if(in_array("any",$formatsArray)) {

    $resources = $con->prepare("SELECT * FROM resources WHERE
        (format IN ('Video', 'Podcast', 'Blog/Article', 'forum', 'Online Course'))
         AND (topic IN (?))");
    $resources->bind_param('s', $topics);
  }

  // If user has a specific format in mind, then proceed with the following
  else {
    // Prepare the statement
    $resources = $con->prepare("SELECT * FROM resources WHERE
            (format IN (?))
             AND (topic IN (?))");

    // Bind the statement
    $resources->bind_param('ss',$formats, $topics);

  }
}

  else if($_POST['costs'] == "free") {
    if(in_array("any",$formatsArray)) {

      // Prepare statement
      $resources = $con->prepare("SELECT * FROM resources WHERE
          (format IN ('Video', 'Podcast', 'Blog/Article', 'forum', 'Online Course'))
           AND (topic IN (?))
           AND  cost like 0");

      // Bind paramater
      $resources->bind_param('s', $topics);
    }

  // If user has a specific format in mind, then proceed with the following
    else {

      // Prepare the statement
      $resources = $con->prepare("SELECT * FROM resources WHERE
              (format IN (?))
               AND (topic IN (?))
               AND  (cost like 0)");

      // Bind the statement
      $resources->bind_param('ss', $formats, $topics);

    }
}

else if($_POST['costs'] == "100") {
  if(in_array("any",$formatsArray)) {

    // Prepare statement
    $resources = $con->prepare("SELECT * FROM resources WHERE
        (format IN ('Video', 'Podcast', 'Blog/Article', 'forum', 'Online Course'))
         AND (topic IN (?))
         AND  (cost <= 100)");

    // Bind paramater
    $resources->bind_param('s', $topics);
  }

  // If user has a specific format in mind, then proceed with the following
  else {

    // Prepare statement
    $resources = $con->prepare("SELECT * FROM resources WHERE
            (format IN (?))
             AND (topic IN (?))
             AND  (cost <= 100)");

    // Bind paramater
    $resources->bind_param('ss', $formats, $topics);

  }
}

// Execute the prepare statement
$resources->execute();

    while($row=$result->fetch_assoc())

    {
      $data[] = array(
      'format' => $row['format'],
      'title' => $row['title'],
      'costs' => $row['cost'],
      'stage' => $row['stage'],
      'topic' => $row['topic'],
      'duration' => $row['duration'],
      'link' => $row['link']
  );
    }

我确定查询运行成功，因为没有返回任何错误，我确实存储了项目。我已将查询转换为使用预准备语句。

foreach循环没有正确执行

0 个答案: