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因此，我无法将数据导入此表。我有一个类似的成员(member)表设置。如果我将插入查询更改为成员资格，则一切正常，但一旦我更改表以加入它，它就会停止工作。该表似乎设置正确，因为它与我的成员(member)表基本相同，但由于某种原因数据不会插入。我想不出是什么导致了我的问题，所以我去找专家。
请注意，当进入不同的表时，这段代码都可以完美地工作。提前致谢。
if ( isset($_POST['btn-join']) ) {
// clean user inputs to prevent sql injections
$groupID = trim($_POST['groupID']);
$groupID = strip_tags($groupID);
$groupID = htmlspecialchars($groupID);
$teamname = trim($_POST['teamname']);
$teamname = strip_tags($teamname);
$teamname = htmlspecialchars($teamname);
// Query groups to set group name
$query2 = "SELECT groupName FROM groups WHERE groupID='$groupID'";
$result2 = mysqli_query($con,$query2);
$groupquery = mysqli_fetch_array($result2,MYSQLI_ASSOC);
$groupname = $groupquery['groupName'];
// groupID validation
if (empty($groupID)) {
$error = true;
$groupIDError = "Please enter valid Group ID.";
} else {
// check email exist or not
$query3 = "SELECT groupID FROM groups WHERE groupID='$groupID'";
$result3 = mysqli_query($con,$query3);
$count = mysqli_num_rows($result3);
if($count!=1){
$error = true;
$groupIDError = "Provided Group does not exist.";
}
}
// basic teamname validation
if (empty($teamname)) {
$error = true;
$nameError = "Please enter your Team Name.";
} else if (strlen($teamname) < 3) {
$error = true;
$nameError = "Team Name must have at least 3 characters.";
}
// if there's no error, continue to signup
if( !$error ) {
$query = "INSERT INTO join(groupID,userID,groupName,teamName) VALUES('$groupID','$userID','$groupname','$teamname')";
$membership = mysqli_query($con,$query);
if ($membership) {
$errTyp = "success";
$errMSG = "Account successfully updated";
header("Location: dashboard.php");
} else {
$errTyp = "danger";
$errMSG = "Something went wrong, try again later...";
}
}
}
SQL:
CREATE TABLE IF NOT EXISTS `join` (
`jID` int(11) NOT NULL AUTO_INCREMENT,
`groupID` varchar(32) NOT NULL,
`userID` varchar(32) NOT NULL,
`groupName` varchar(35) NOT NULL,
`teamName` varchar(32) NOT NULL,
`joinDate` datetime DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (`jID`),
UNIQUE KEY `groupID` (`groupID`,`userID`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=1;