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PHP stmt prepare失败,但是没有错误

转载 作者:行者123 更新时间:2023-12-04 19:04:43 28 4
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我正在尝试准备一个mysqli查询,但是它在没有给出任何错误的情况下以静默方式失败。

 $db_hostname  = "test.com";
$db_database = "dbname";
$db_username = "db_user";
$db_password = "password";
$db = new mysqli($db_hostname,$db_username,$db_password,$db_database);

$q = "INSERT INTO Members (`wp_users_ID`,`MemberID`,`Status`,`MiddleName`,`Nickname`,`Prefix`,`Suffix`,`HomeAddress`,`City`,`State`,`Zip`,`ExtendedZip`,`BadAddress`,`SpouseFirstName`,`SpouseMiddleName`,`HomePhone`,`CellPhone`,`WorkPhone`,`WorkPhoneExt`,`OfficePhone`,`OfficePhoneExt`,`Pager`,`Fax`,`Company`,`CompanyType`,`OfficeAddress`,`OfficeAddress2`,`OfficeCity`,`OfficeState`,`OfficeZip`,`OTYPECO`,`OSTAG`,`UPCODE`,`Region`,`Department`,`Classification`,`Retired`,`Industry`,`Comments`,`Officer`,`OfficerType`,`OfficerTitle`,`OUNIT`,`ReceiveEMagazine`,`CD`,`SD`,`AD`,`isOrganization`,`DEL`,`Dues`,`DataSource`) VALUES ((?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?),(?));";
$stmt = $db->prepare($q);
if ( false === $stmt ) {
echo "<pre>";
print_r( $db );
echo "</pre>";
mysqli_report(MYSQLI_REPORT_ALL);
echo mysqli_error();
}

实际显示任何内容的唯一部分是print_r($ db):
 mysqli Object
(
[affected_rows] => -1
[client_info] => 5.1.73
[client_version] => 50173
[connect_errno] => 0
[connect_error] =>
[errno] => 0
[error] =>
[error_list] => Array
(
)
[field_count] => 1
[host_info] => dbhost.com via TCP/IP
[info] =>
[insert_id] => 919910
[server_info] => 5.1.73-log
[server_version] => 50173
[stat] => Uptime: 1924325 Threads: 8 Questions: 642600129 Slow queries: 28158 Opens: 24168750 Flush tables: 1 Open tables: 403 Queries per second avg: 333.935
[sqlstate] => 00000
[protocol_version] => 10
[thread_id] => 9939810
[warning_count] => 0
)

有人看到会导致这种情况的东西吗?没有任何错误,很难看出问题出在哪里……我尝试将结果查询直接复制并粘贴到phpmyadmin中,并且运行得很好(在用测试值手动替换问号之后)。

谢谢!

更新

看来,由于添加了mysqli_report(MYSQLI_REPORT_ALL);在页面顶部,插入查询上方的查询现在失败,尽管仍然没有错误。这是执行失败:
 echo "1";
$idDataSources = "";
echo "2";
$q = "SELECT idDataSources FROM DataSources WHERE `description`=(?);";
echo "3";
$stmt = $db->prepare($q);
echo "4";
$stmt->bind_param('s',$description);
echo "5";
$description = "File - 01/10/2015";
echo "6";
$stmt->execute() or die( mysqli_stmt_error( $stmt ) );
echo "7";
$stmt->bind_result($idDataSources);
echo "8";
$stmt->fetch();
echo "9";
unset($params);

输出:
 123456

它进入$ stmt-> execute()并失败。再一次,我尝试输出错误,但是什么也没有显示。这真是莫名其妙。我想知道是否应该恢复到旧的mysql(非面向对象)方法...这是不安全的,但是至少它可以始终如一地工作,并在出现问题时显示错误。

更新2

好吧,我只是使用mysql(非面向对象)而不是mysqli重写了整个脚本...就像梦一样。我希望我可以切换到较新的标准,但是由于存在这样的随机故障和错误报告错误,因此肯定很困难。我将保留“更好”的版本,直到我弄清楚为什么它失败了。

更新3

我注意到mysqli有一个有趣的行为。在同一代码中的其他地方,我有两个通过STMT运行的查询,一个接一个。这偶尔会失败。这些失败并不一致,因为我可以提交50次相同的数据,但其中的20次可能失败...相同的数据,相同的功能。

为了准确地确定脚本错误的出处,我在两个查询的每个语句之间添加了echo命令,只是吐出一个数字以查看计数停止的地方-事实证明,使用不相关的命令,它使STMT变慢了足以使其始终如一地工作。这使我想知道STMT连接是否未正确关闭。
$q = "";
$stmt = $this->db->prepare( "SELECT ID FROM Members WHERE MemberID='5' LIMIT 1;" );
$stmt->execute();
$stmt->store_result();
if ( $stmt->num_rows > 0 ) {
$q = "UPDATE Members SET Name='Test' WHERE MemberID=(?) LIMIT 1;";
}
$stmt->close();

// here if we continue, it has a chance of erroring out. However,
// if we run just the following command instead, everything works perfect.
//
// mysql_query( "UPDATE Members SET Name='Test' WHERE MemberID='5' LIMIT 1;" );

if ( $q != "" ) {
$stmt = $this->db->prepare($q);
$stmt->bind_param('i',$params['ID']);
$params['ID'] = 5;
$stmt->execute();
$stmt->close();
unset($params);
}

有人可以解释这种行为吗?似乎它们永远不会发生冲突,因为在开始新查询之前我使用了close()命令,并且它在某些时候确实起作用...似乎很奇怪。

最佳答案

这是来自php.net的稍微改编的示例脚本,带有错误处理:

<?php
$mysqli = new mysqli("example.com", "user", "password", "database");
if ($mysqli->connect_errno) {
echo "Failed to connect to MySQL: (" . $mysqli->connect_errno . ") " . $mysqli->connect_error;
}

/* Prepared statement, stage 1: prepare */
if (!($stmt = $mysqli->prepare("SELECT idDataSources FROM DataSources WHERE `description`=(?)"))) {
echo "Prepare failed: (" . $mysqli->errno . ") " . $mysqli->error;
}

/* Prepared statement, stage 2: bind and execute */
$description = "File - 01/10/2015";
if (!$stmt->bind_param('s', $description)) {
echo "Binding parameters failed: (" . $stmt->errno . ") " . $stmt->error;
}

if (!$stmt->execute()) {
echo "Execute failed: (" . $stmt->errno . ") " . $stmt->error;
}

/* explicit close recommended */
$stmt->close();
?>

请注意,$ mysqli或$ stmt都可以保存错误描述。

关于PHP stmt prepare失败,但是没有错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/27882604/

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