我试图将数据从我的UITextFields发布到MySQL数据库。控制台说我的连接成功,但是由于某种原因数据没有发布到数据库?知道为什么吗?这是我的代码:

ViewController.h

-(IBAction)addParty:(id)sender;

@property (strong, nonatomic) IBOutlet UITextField *firstname;
@property (strong, nonatomic) IBOutlet UITextField *lastname;
@property (strong, nonatomic) IBOutlet UITextField *phone;
@property (strong, nonatomic) IBOutlet UITextField *email;
@property (strong, nonatomic) IBOutlet UITextField *guests;

@property (nonatomic, copy) NSDictionary *venueDetail;
@end


ViewController.m

- (IBAction)addParty:(id)sender
{

NSString *strURL = [NSString stringWithFormat:@"guestfirst=%@&guestlast=%@", firstname.text, lastname.text];

NSData *postData = [strURL dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%d",[postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:@"http://myurl.com/phpfile.php"]];
[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Current-Type"];
[request setHTTPBody:postData];


NSURLConnection *conn = [[NSURLConnection alloc]initWithRequest:request delegate:self];

if(conn)
{
    NSLog(@"Connection Successful");
}
else
{
    NSLog(@"Connection could not be made");
}

}


Post.php

<?Php
include('connect.php');

if (isset ($_POST["guestfirst"]) && isset ($_POST["guestlast"])){
    $guestfirst = $_POST["guestfirst"];
    $guestlast = $_POST["guestlast"];
} else {
    $guestfirst = "none";
    $guestlast = "none";
}

// Insert value into DB
$sql = "INSERT INTO events (guestfirst, guestlast) VALUES ('$guestfirst', '$guestlast');";
$res = mysql_query($sql,$conn) or die(mysql_error());

mysql_close($conn);

if($res) {
$response = array('status' => '1');
} else {
die("Query failed");
}

echo json_encode($res);
exit();

?>

最佳答案

我在您当前的代码中发现了一些问题。


在获取现有文章时,您是将查询分配给$get_events,但是是从$events获取。
您在插入之前正在获取。 (也许这是您的意图?)
您输出多个JSON对象
您的查询使用而不是$events
如果发生MySQL错误,则调用`events`,因此您将永远不会收到表示错误的JSON响应。
您正在使用旧的MySQL库,并且脚本容易受到SQL注入的攻击。


下面是一个应该修复所有这些问题的版本,但旧库除外:

connect.php

<?php
$conn = mysql_connect('localhost', 'root', 'root');
mysql_select_db('testing');
?>


post.php

<?php
require_once("connect.php");

if (isset ($_POST["guestfirst"]) && isset ($_POST["guestlast"]))
{
    $guestfirst = mysql_real_escape_string($_POST["guestfirst"]);
    $guestlast = mysql_real_escape_string($_POST["guestlast"]);
}
else
{
    $guestfirst = "No Entry";
    $guestlast = "none";
}

$sql = "INSERT INTO `events` (guestfirst, guestlast) VALUES ('$guestfirst', '$guestlast');";
$res = mysql_query($sql, $conn) or $error = mysql_error();

if($res)
{
    $ret = array(
        'inserted' => true
    );
}
else
{
    $ret = array(
        'inserted' => false,
        'error' => $error
    );
}

mysql_close($conn);
echo json_encode($ret);
exit();
?>


list.php(或您所说的其他名称)

<?php
require_once("connect.php");

$get_events = mysql_query("SELECT * FROM `events`", $conn);
$articles = array();

while ($row = mysql_fetch_assoc($get_events))
{
    $articles[] = $row;
}

mysql_close($conn);
echo json_encode($articles);
exit();
?>

关于php - 从iOS POST到MySQL数据库,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/26454715/

10-10 20:58
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