Question

我正在尝试允许用户将YouTube视频网址上传到数据库，但想要检查网址是否已被删除。填写表单（由if语句检查）后，它继续上传文件，但首先检查函数（vid）是否已上传。当我尝试代码时，出现错误：

mysql_select_db（）：提供的参数不是第76行/home/content/95/8201295/html/dialog/youtube-up.php中的有效MySQL-Link资源

警告：mysql_query（）：提供的参数不是78行/home/content/95/8201295/html/dialog/youtube-up.php中有效的MySQL-Link资源

警告：mysql_num_rows（）：提供的参数不是第79行/home/content/95/8201295/html/dialog/youtube-up.php中的有效MySQL结果资源   视频SUbmited

有人可以帮忙，这是我的代码。谢谢你的帮助。

<?php require_once('../Connections/Main.php'); 

if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
{
  if (PHP_VERSION < 6) {
    $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
  }

  $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);

  switch ($theType) {
    case "text":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;    
    case "long":
    case "int":
      $theValue = ($theValue != "") ? intval($theValue) : "NULL";
      break;
    case "double":
      $theValue = ($theValue != "") ? doubleval($theValue) : "NULL";
      break;
    case "date":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;
    case "defined":
      $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
      break;
  }
  return $theValue;
}
}

if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
{
  if (PHP_VERSION < 6) {
    $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
  }

  $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);

  switch ($theType) {
    case "text":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;    
    case "long":
    case "int":
      $theValue = ($theValue != "") ? intval($theValue) : "NULL";
      break;
    case "double":
      $theValue = ($theValue != "") ? doubleval($theValue) : "NULL";
      break;
    case "date":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;
    case "defined":
      $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
      break;
  }
  return $theValue;
}
}

mysql_select_db($database_Main, $Main);
$query_youtube = "SELECT video_id FROM youtube";
$youtube = mysql_query($query_youtube) or die(mysql_error());
$row_youtube = mysql_fetch_assoc($youtube);
$totalRows_youtube = mysql_num_rows($youtube);

$editFormAction = $_SERVER['PHP_SELF'];
if (isset($_SERVER['QUERY_STRING'])) {
  $editFormAction .= "?" . htmlentities($_SERVER['QUERY_STRING']);
}
function vid ($vid) {
$SQL = "SELECT * FROM youtube WHERE video_id = '".$vid."'";
$result = mysql_query($SQL, $Main);
$num_rows = mysql_num_rows($result);
if ($num_rows > 0) {
$errorMessage = "Video already taken";
echo($errorMessage);
return false;
} 
else {
    echo('Video SUbmited');
    return true;
}
    }
    $pieces = explode("=", $_POST['url']);
    $Ndone = $pieces[1];
    $pieces = explode("&", $Ndone);
    $done = $pieces[0];
if ((isset($_POST["MM_insert"])) && ($_POST["MM_insert"] == "youtube")) {
    if(vid($done)) {
         $insertSQL = sprintf("INSERT INTO youtube (video_id) VALUES (%s)",
                       GetSQLValueString($done, "text"));

        $Result1 = mysql_query($insertSQL, $Main) or die(mysql_error());
    }
    }
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Untitled Document</title>
<script src="../SpryAssets/SpryValidationTextField.js" type="text/javascript"></script>
<link href="../SpryAssets/SpryValidationTextField.css" rel="stylesheet" type="text/css" />
</head>
<style type="text/css">
.text_box {
    text
    font-size: 9px;
    color: #000;
    }
</style>
<body>

  <form action="<?php echo $editFormAction; ?>" name="youtube" height="100px" method="POST" id="youtube">
    <span id="url">
    <input type="text" class="text_box" value="type in url of video " name="url" id="url2" />
    <span class="textfieldRequiredMsg">A value is required.</span><span class="textfieldInvalidFormatMsg">Invalid format.</span></span>
    </input>
    <input type="submit">
    <input type="hidden" name="MM_insert" value="youtube" />
    </p>
    </input>
  </form>
  <?php ?>
<script type="text/javascript">
var sprytextfield1 = new Spry.Widget.ValidationTextField("url", "url", {validateOn:["blur"]});
</script>
</body>
</html>
<?php
mysql_free_result($youtube);
?>

Answer 1

您提供的代码不包含错误。由于某种原因，我们不知道，mysql_connect失败，从而导致您的所有错误。基本上，问题在于$ database_Main变量，它不是正确的MySQL结果资源，如错误消息所述。

您应该更多地阅读有关调试的内容，因为您的问题表明您在此域中缺乏相关知识。

重复检查工作无效

1 个答案: