（PHP）什么'；这是我的错吗？

表单上的数据未能保存到数据库中。我找不到这里出了什么问题。我已经检查了输入表单的名称，并且都是正确的。我在用PDO

if ($_POST) {
$accountuname = ($_POST['accountuname']);
$accountpassword = ($_POST['accountpassword']);
$accounttype = ($_POST['accounttype']);
$companyname = ($_POST['companyname']);
$companyproduct = ($_POST['companyproduct']);
$companyaddress = ($_POST['companyaddress']);
$companycontactnum = ($_POST['companycontactnum']);

$query = "INSERT INTO user_accounts SET USER_NAME=?, USER_PASS=?, USER_ACC_TYPE=?, COMPANY_NAME=?, COMPANY_PRODUCT=?, COMPANY_ADDRESS=?, COMPANY_CONTACTNUM=?";
$stmt  = $conn->prepare($query);
$stmt  -> bindParam(1,$accountuname);
$stmt  -> bindParam(2,$accountpassword);
$stmt  -> bindParam(3,$accounttype);
$stmt  -> bindParam(4,$companyname);
$stmt  -> bindParam(5,$companyproduct);
$stmt  -> bindParam(6,$companyaddress);
$stmt  -> bindParam(7,$companycontactnum);
$stmt  -> execute();
}else{
header("location:index.php");
}

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将SQL查询更改为：

INSERT INTO user_accounts SET USER_NAME=?, USER_PASS=?, USER_ACC_TYPE=?, COMPANY_NAME=?, COMPANY_PRODUCT=?, COMPANY_ADDRESS=?, COMPANY_CONTACTNUM=?

致：

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如果您使用的是mysqli，根据，bind_param（而不是bindParam…可能您使用的是框架？）函数希望第一个参数是字符串，而不是int：

bind_param ( string $types , mixed &$var1 [, mixed &$... ] )

类型

对于相应的绑定变量：

i对应变量的类型为integer

d对应变量的类型为double

s对应的变量具有类型字符串

b对应的变量是blob，将以数据包的形式发送

您应该更改1,2,3,4。。。到'd，s，b'（变量类型），它应该可以工作

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希望有帮助

您必须指定绑定的参数类型，而且您的查询不正确

以下是MySQLi中的正确版本：

$query = "INSERT INTO user_accounts (USER_NAME, USER_PASS, USER_ACC_TYPE, COMPANY_NAME, COMPANY_PRODUCT, COMPANY_ADDRESS, COMPANY_CONTACTNUM) VALUES (?, ?, ?, ?, ?, ?, ?)";
$stmt  = $conn->prepare($query);

$stmt->bindParam("sssssss", $accountuname, $accountpassword, $accounttype, $companyname, $companyproduct, $companyaddress, $companycontactnum);

// Set parameters and execute
$accountuname = $_POST['accountuname'];
$accountpassword = $_POST['accountpassword'];
$accounttype = $_POST['accounttype'];
$companyname = $_POST['companyname'];
$companyproduct = $_POST['companyproduct'];
$companyaddress = $_POST['companyaddress'];
$companycontactnum = $_POST['companycontactnum'];
$stmt->execute();

以下是PDO中的正确版本：

$query = "INSERT INTO user_accounts (USER_NAME, USER_PASS, USER_ACC_TYPE, COMPANY_NAME, COMPANY_PRODUCT, COMPANY_ADDRESS, COMPANY_CONTACTNUM) VALUES (:uname, :upass, :utype, :cname, :cproduct, :caddress, :ccontactnum)";
$stmt  = $conn->prepare($query);

$stmt->bindParam(':uname', $accountuname);
$stmt->bindParam(':upass', $accountpassword);
$stmt->bindParam(':utype', $accounttype);
$stmt->bindParam(':cname', $companyname);
$stmt->bindParam(':cproduct', $companyproduct);
$stmt->bindParam(':caddress', $companyaddress);
$stmt->bindParam(':ccontactnum', $companycontactnum);

// Set parameters and execute
$accountuname = $_POST['accountuname'];
$accountpassword = $_POST['accountpassword'];
$accounttype = $_POST['accounttype'];
$companyname = $_POST['companyname'];
$companyproduct = $_POST['companyproduct'];
$companyaddress = $_POST['companyaddress'];
$companycontactnum = $_POST['companycontactnum'];
$stmt->execute();

对于MYSQLi:在本例中，我假设所有发布的数据都是字符串，否则您必须更改bindParam函数中的“sss”

阅读有关准备好的声明的更多信息

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阅读更多关于MySQLi插入语法的信息

您是否有任何错误，或者插入的

用户帐户记录是否不是您期望的？您正在使用PDO，对吗？Adam Forbis，是的，看起来Mike Wood的答案是正确的，我想您混淆了插入和更新语法。但您可能会检查是否发生了任何错误—从不存储纯文本密码。您应该使用和。如果您使用的是5.5之前的PHP版本，请不要使用MD5或SHA1散列密码。相反，您可以使用。
$query = "INSERT INTO user_accounts (USER_NAME, USER_PASS, USER_ACC_TYPE, COMPANY_NAME, COMPANY_PRODUCT, COMPANY_ADDRESS, COMPANY_CONTACTNUM) VALUES (?, ?, ?, ?, ?, ?, ?)";
$stmt  = $conn->prepare($query);

$stmt->bindParam("sssssss", $accountuname, $accountpassword, $accounttype, $companyname, $companyproduct, $companyaddress, $companycontactnum);

// Set parameters and execute
$accountuname = $_POST['accountuname'];
$accountpassword = $_POST['accountpassword'];
$accounttype = $_POST['accounttype'];
$companyname = $_POST['companyname'];
$companyproduct = $_POST['companyproduct'];
$companyaddress = $_POST['companyaddress'];
$companycontactnum = $_POST['companycontactnum'];
$stmt->execute();

$query = "INSERT INTO user_accounts (USER_NAME, USER_PASS, USER_ACC_TYPE, COMPANY_NAME, COMPANY_PRODUCT, COMPANY_ADDRESS, COMPANY_CONTACTNUM) VALUES (:uname, :upass, :utype, :cname, :cproduct, :caddress, :ccontactnum)";
$stmt  = $conn->prepare($query);

$stmt->bindParam(':uname', $accountuname);
$stmt->bindParam(':upass', $accountpassword);
$stmt->bindParam(':utype', $accounttype);
$stmt->bindParam(':cname', $companyname);
$stmt->bindParam(':cproduct', $companyproduct);
$stmt->bindParam(':caddress', $companyaddress);
$stmt->bindParam(':ccontactnum', $companycontactnum);

// Set parameters and execute
$accountuname = $_POST['accountuname'];
$accountpassword = $_POST['accountpassword'];
$accounttype = $_POST['accounttype'];
$companyname = $_POST['companyname'];
$companyproduct = $_POST['companyproduct'];
$companyaddress = $_POST['companyaddress'];
$companycontactnum = $_POST['companycontactnum'];
$stmt->execute();