iOS /PHP - 'if'语句适用于iOS，但不适用于浏览器 - Very odd iOS /PHP - 'if' statement works over iOS but not on a browser

Very odd iOS /PHP - 'if' statement works over iOS but not on a browser

我很困惑。基本上，我有一个iOS应用程序，它将字符串上传到我的蓝色主机服务器上的。php文件。

-(IBAction)plus{
if (counter>=0 && counter<240) {
counter=counter+1;
count.text = [NSString stringWithFormat:@"%i",counter];
    NSString* myString = [NSString stringWithFormat:@"%d",counter];
    NSString *receipt1 = @"This should work?";
    NSString *post =[NSString stringWithFormat:@"receipt=%@",receipt1];
    NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding 
allowLossyConversion:YES];
    NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
    NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
    [request setURL:[NSURL 
URLWithString:@"http://www.ryanmediaworks.com/validation.php"]];
    [request setHTTPMethod:@"POST"];
    [request setValue:postLength forHTTPHeaderField:@"Content-Length"];
    [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-
Type"];
    [request setHTTPBody:postData];
    NSHTTPURLResponse* urlResponse = nil;
    NSError *error = [[NSError alloc] init];
    NSData *responseData = [NSURLConnection sendSynchronousRequest:request 
returningResponse:&urlResponse error:&error];
    NSString *result = [[NSString alloc] initWithData:responseData   
encoding:NSUTF8StringEncoding];
    NSLog(@"Response Code: %d", [urlResponse statusCode]);
    if ([urlResponse statusCode] >= 200 && [urlResponse statusCode] < 600)
    {
        NSLog(@"Response: %@", result);
    }
}
}

这是我的。php文件:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"  
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
    <title>I hope this works!</title>
</head>
<body>
    <?php
if(_POST)
    {
 if($_POST['receipt'] == 'This should work?')
        {
            echo "post successfull";
        }
        else
    {
        echo "not post";
        }
    }
?>
</body>
</html>

这里是奇怪的部分…这是我的浏览器:

<head>
    <title>I hope this works!</title>
</head>
<body>
    not post</body>
</html>

但是这里是Xcode的输出:

<head>
    <title>I hope this works!</title>
</head>
<body>
    post successfull</body>
</html>

似乎'if'语句在xcode上工作，但不在浏览器上?换句话说，正确的字符串被上传到.php，因此返回短语"post successfully"。但是，在浏览器中查看时，该短语不存在?

我真的很感谢任何帮助在这个问题上!

似乎很奇怪。试试这个

if(isset($_POST['receipt'])
{
 if($_POST['receipt'] == 'This should work?')
    {
        echo "post successfull";
    }
    else
{
    echo "not post";
    }
}
?>

也当你检查你的浏览器，是你做一个post请求后，从同一浏览器(例如，通过表单post)?

你的iOS代码正在做一个post，这就是它返回成功的原因。如果你只是加载。php文件而没有在相同的设备/浏览器上做任何类型的post到。php页面，它会显示"not post"