如何从Xcode（objective c）向php发送和接收数据
我试图将用户名和密码从xcode发送到我制作的php文件中。由于我对xcode和php都是新手，而且对于我正在制作的简单应用程序来说，用户名和密码是预定义的123456。我在将用户名和密码发送到php站点并收到响应时遇到了很多问题。当我的代码进行通信并建立连接时，它不会读取php文件中回显的变量。相反，它获取页面的整个源代码。我的代码如下： 目标C代码： //我已经设置了一个警报视图，并设置了两个按钮continue=buttonIndex==0和cancel=buttonIndex==1如何从Xcode（objective c）向php发送和接收数据,php,ios,objective-c,xcode,nsurlrequest,Php,Ios,Objective C,Xcode,Nsurlrequest,我试图将用户名和密码从xcode发送到我制作的php文件中。由于我对xcode和php都是新手，而且对于我正在制作的简单应用程序来说，用户名和密码是预定义的123456。我在将用户名和密码发送到php站点并收到响应时遇到了很多问题。当我的代码进行通信并建立连接时，它不会读取php文件中回显的变量。相反，它获取页面的整个源代码。我的代码如下： 目标C代码： //我已经设置了一个警报视图，并设置了两个按钮continue=buttonIndex==0和cancel=buttonIndex==1
// The user continues from the alert view
if(buttonIndex==0)
{
NSString* username = @"123456";
NSString* pass = @"123456";
// I combine the two strings to send to the php page, and insert a : between the two strings
NSString* combined = [NSString stringWithFormat:@"%@:%@", username, pass];
NSString *post = combined;
// Now I attempt to post the data to the php page
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
NSURL *url = [NSURL URLWithString:@"http://www.sulaimanmajeed.com/login.php"];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];
[theRequest setHTTPMethod:@"POST"];
[theRequest setValue:postLength forHTTPHeaderField:@"Content-Length"];
[theRequest setHTTPBody:postData];
NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
if( theConnection )
{
webData = [[NSMutableData data] retain];
}
else
{
}
}
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
[webData setLength: 0];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[webData appendData:data];
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
[connection release];
[webData release];
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSString *loginStatus = [[NSString alloc] initWithBytes: [webData mutableBytes] length:[webData length] encoding:NSUTF8StringEncoding];
// NSLog(loginStatus);
dataOutput.text = loginStatus;
[loginStatus release];
[connection release];
[webData release];
}
<?php
$usernameEntered = $_GET['user']; $passwordEntered = $_GET['pass']; $full = 'Choose';
$username = array(
"123456", "234567", "345678", "456789" );
$password = array(
"123456", "234567", "345678", "456789" );
$accounts = array(
"Chequings-874576",
"Savings-793756",
"Visa-018375",
"Mastercard-375836" );
$b = 0; $elementsInArray = count($accounts);
$isTrue = "FALSE";
if (($usernameEntered== $username[0]) && ($passwordEntered == $password[0])) {
$isTrue = "TRUE"; } elseif ((usernameEntered == $username[1]) && ($passwordEntered == $password[1])) {
$isTrue = "TRUE"; } elseif ((usernameEntered == $username[2]) && ($passwordEntered == $password[2])) {
$isTrue = "TRUE"; } elseif ((usernameEntered == $username[3]) && ($passwordEntered == $password[3])) {
$isTrue = "TRUE"; } else {
$isTrue = "FALSE"; }
if( $isTrue == "TRUE" ) { for ($i=0; $i < $elementsInArray; $i++) { $b = $i; $full = $full . ':' . $accounts[$b] ; }
echo $full;
}
if( $isTrue == "FALSE" ) {
echo "error:error 2:test 1:test 2:test 3";
}
?>
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我相信有更好的方法可以做到这一点，但您可以在UIWebView中加载php文件，然后运行脚本，然后，当您想要检索变量时，可以使用php打印它们，然后使用javascript检索它们，并使用其他人在这里提到的方法将变量从javascript传输到objective-c：如果这里有人对答案感兴趣，对于一些琐碎的数据发送来说，这有点过分了，我建议您看看ActiveMQ。您可以设置服务器，并且您的iOS设备可以订阅服务器上的队列，以识别其他客户端是否在队列中发送数据
关于您是否使用wordpress插件或其他可能干扰php文件的php文件运行php类
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如果粘贴的是PHP代码，则会出现严重的语法问题。首先，您只需让脚本无误地运行即可。他说的。。。以$password[0]而不是password0开始，以$result\u数组[0]而不是$result\u数组0。。。。和$username[0]而不是username0。。。还有一些，请先调试一下。我一直在寻找一种将变量从javascript转换到objective c的方法。如果我有一个有效的方法，我可以避免整个混乱。我正在开发的应用程序已经实现了一个服务器，它使用javascript与之通信。然而，我尝试了几种方法来跨两种语言传输变量，但每种方法都失败了。因此，我尝试使用php。谢谢你的帮助！你看到我贴的链接了吗？它向您展示了如何通过EvaluatingJavaScriptFromStringYes将变量从javascript传输到objective cLook up stringByEvaluatingJavaScriptFromStringYes我看到了链接。我想我可以将其加载到web视图中，并使用该代码。不过，我确实认为以本地方式运行它更简单。当我说我一直在寻找一种将变量从javascript转换到objective-c的方法时，我的意思是我正在运行一个混合javascript/objective-c应用程序，我需要一个objective-c javascript桥。这很难实现，因此我避免使用任何会使我的应用程序更复杂的javascript。我的php代码中有很多错误。一旦我修复了这些，程序就正常工作了。谢谢