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可能重复:
我如何从 PHP 中的 MySql 响应中“回显”“Resource id #6”?

我正在寻找查询的结果,但它一直给我资源 id #3。

以下是我的代码。

$type = "SELECT `sellingid` FROM `ticket` WHERE `ticketid` = $_GET[ticketid]";
$typeResult = mysql_query($type);

print_r($typeResult);

我在这里缺少什么步骤?

4

4 回答 4

2

您需要获取结果。您所做的就是发送查询。

请注意,如果您正在编写新代码,则应该使用mysqli_orPDO函数,因为您的查询容易受到 SQL 注入的攻击,并且mysql_函数正在被弃用。犹豫不决,下面是一个示例mysql_fetch_assoc

<?php

$sql = "SELECT `sellingid` FROM `ticket` WHERE `ticketid` = $_GET[ticketid]";

$result = mysql_query($sql);

if (mysql_num_rows($result) == 0) {
    echo "No rows found, nothing to print so am exiting";
    exit;
}

// While a row of data exists, put that row in $row as an associative array
// Note: If you're expecting just one row, no need to use a loop
// Note: If you put extract($row); inside the following loop, you'll
//       then create $userid, $fullname, and $userstatus
while ($row = mysql_fetch_assoc($result)) {
    echo $row[sellingid];
}

mysql_free_result($result);

?>

参考

于 2012-10-25T19:13:43.697 回答
0
$type = "SELECT `sellingid` FROM `ticket` WHERE `ticketid` = $_GET[ticketid]";
$typeResult = mysql_query($type);
$row = mysql_fetch_array($typeResult);
print_r($row);
于 2012-10-25T19:15:26.827 回答
0

您实际上并没有获取查询结果。下面是两个使用 WHILE 循环将结果作为行获取的示例。然后,您可以获取列值并使用它们。

不正确和折旧的方法,但有效:

$type = "SELECT `sellingid` FROM `ticket` WHERE `ticketid` = $_GET[ticketid]";
$typeResult = mysql_query($type);
// for each row
while ($row = mysql_fetch_array($typeResult)) {
    // grab the columns
    $value = $row['column_name'];
}

我建议使用 MySQLi 或 PDO 喜欢以下(MySQLi):

$mysqli_connection = new mysqli("hostname", "username", "password", "database");
$type = "SELECT `sellingid` FROM `ticket` WHERE `ticketid` = $_GET[ticketid]";
$res = $mysqli_connection->query($type);
while($row = $res->fetch_array(MYSQLI_ASSOC)) {
    $value = $row['column_name'];
}
$res->free();
$mysqli_connection->close();
于 2012-10-25T19:15:32.007 回答
0

更清晰的提示 - 使用 MySQLi 类/函数,请阅读:

http://lt1.php.net/manual/en/mysqli-result.fetch-assoc.php

或者如果你更喜欢 OOP 方法

http://lt1.php.net/manual/en/mysqli-result.fetch-object.php

于 2012-10-25T19:17:47.000 回答