未将数据插入表中，但正在加载php文件。目标C $con = mysql_connect($DB_HostName,$DB_User,$DB_Pass); mysql_select_db("$DB_Name"); $email = $_GET['email']; $userid = $_GET['userid']; $bname = $_GET['bname']; $bgenre = $_GET['bgenre']; $bio = $_GET['bio']; $sql = "insert into $DB_Table (bname, bgenre, bio, userid) values('$bname', '$bgenre','$bio','$userid') select userid from $DB_Table2 where email = '$email'; $res = mysql_query($sql,$con); mysql_close($con); if($res) { echo"You created a band!"; }else{ echo"Band account wasn't created"; } ?>

我正在尝试创建一个与登录我的应用程序的用户绑定的组帐户。所有代码都正常运行，并且正在连接到数据库，但由于某些原因，它不会将新组插入到我的数据库表中。这是我到目前为止得到的。任何帮助都将不胜感激。 php文件

        $con = mysql_connect($DB_HostName,$DB_User,$DB_Pass);
        mysql_select_db("$DB_Name");


            $email = $_GET['email'];
            $userid = $_GET['userid'];  
            $bname = $_GET['bname'];
            $bgenre = $_GET['bgenre'];
            $bio = $_GET['bio'];


        $sql = "insert into $DB_Table (bname, bgenre, bio, userid) values('$bname', '$bgenre','$bio','$userid')
        select userid from $DB_Table2 where email = '$email';
        $res = mysql_query($sql,$con);

        mysql_close($con);
        if($res) {
            echo"You created a band!";
        }else{
            echo"Band account wasn't created";
        }

?>

vc1.h

vc3.m

vc3.h

---

您的PHP甚至看起来都无效。上下文中的SQL也没有。看起来您试图同时运行两个查询。把它们分开。另外，停止使用mysql函数，因为它们已经被弃用，并且从PHP7开始被删除。将函数迁移为使用PDO或mysqli。如下所示：$sql=insert到$DB_Table bname、bgenre、bio、userid值“$bname”、“$bgenre”、“$bio”、“$res2”；$sql1=从$DB_表2中选择userid，其中email='$email'；$res2=mysqli\u查询$sql1，$con；$res=mysqli\u查询$sql，$con；是的，那可能会更好。操作仍然不起作用

#import <UIKit/UIKit.h>
#import "loginUserViewController.h"


@interface Home : UIViewController


@property (weak, nonatomic) IBOutlet UILabel *username;
@property (weak, nonatomic) IBOutlet UIBarButtonItem *Nav;
@property (weak, nonatomic) IBOutlet UIBarButtonItem *logout;


-(IBAction)logout:(id)sender;

-(IBAction)bandHome:(id)sender;

@end

#import "Home.h"
#import "loginUserViewController.h"


@interface Home ()

@end

@implementation Home
@synthesize username, band1, band2, band3;

-(id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if(self){

    }
    return self;
}

-(void)viewDidLoad
{
    [super viewDidLoad];
    loginUserViewController *object = [[loginUserViewController alloc]init];
    NSString *string = [[NSString alloc] initWithFormat:@"%i",[object.email.text intValue]];

    username.text = string;
}

#import "loginUserViewController.h"
#import "Home.h"
#import "AppDelegate.h"
#import "createBandViewController.h"

@interface loginUserViewController ()


@end

@implementation loginUserViewController

@synthesize email, password;
- (void)didReceiveMemoryWarning
{
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];

}
- (void)viewDidload
{
    [super viewDidLoad];

}

- (void)viewDidUnload
{

    [self setEmail:nil];
    [self setPassword:nil];

    [super viewDidUnload];
}
-(IBAction)loginUser:(id)sender {
    if ([email.text isEqualToString:@""] || [password.text isEqualToString:@""])

    {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"alert" message:@"Please Fill all the field" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
        [alert show];
        return;
    }


    NSMutableString *strURL = [[NSMutableString alloc] initWithFormat:@"http://cgi.soic.indiana.edu/~team54/login2.php?email=%@&password=%@", email.text, password.text ];

    [strURL setString:[strURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];

    NSData *dataURL = [NSData dataWithContentsOfURL:[NSURL URLWithString:strURL]];

    NSMutableString *strResult = [[NSMutableString alloc] initWithData:dataURL  encoding:NSUTF8StringEncoding];

   NSLog(@"logging in");

    if ([strResult isEqualToString:@"1"])
    {
        NSLog(@"Logged in!");
        [self performSegueWithIdentifier:@"login" sender:self];

    }else
    {
        // invalid information
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"alert" message:@"Invalide Information" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
        [alert show];
        return;

    }
    email.text = @"";
    password.text = @"";

}

#import <UIKit/UIKit.h>

@interface createBandViewController : UIViewController
@property (weak, nonatomic) IBOutlet UITextField *bname;
@property (weak, nonatomic) IBOutlet UITextField *bgenre;
@property (weak, nonatomic) IBOutlet UITextField *bio;
@property (weak, nonatomic) IBOutlet UIButton *createBand;

-(IBAction)addBand:(id)sender;

@end