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請幫我解決發(fā)布JSON解碼的表情符號的問題.
我有一個UITextView,這個文本視圖可能有一個表情符號字符.我將數(shù)據(jù)發(fā)布到Web服務器,UITextView.text顯示為JSON,問題是當文本有表情符號時,我無法獲取數(shù)據(jù).我所做的是：

$postData = file_get_contents("php://input") to get the data.

然后我用

$post = json_decode($postData,true);

解碼數(shù)據(jù)并具有關(guān)聯(lián)數(shù)組并將數(shù)據(jù)插入數(shù)據(jù)庫.

這是我將數(shù)據(jù)插入數(shù)據(jù)庫時??的代碼段.

$postData = file_get_contents("php://input");//$postData = '{"body":"characters here ","subject":"subject here","username":"janus","from_id":"185","to_id":"62"}';    $post = json_decode($postData,true);        $data=array(                'user_id_from'=>mysql_real_escape_string($post['from_id']),                'user_id_to'=>mysql_real_escape_string($post['to_id']),                'subject'=>mysql_real_escape_string($post['subject']),                'message'=>mysql_real_escape_string($post['body']));                $messages_obj->insert($data);

沒有找到表情符號字符,它工作正常.沒問題.問題是當找到表情符號字符時,$post(解碼數(shù)據(jù))中的數(shù)據(jù)為空.

我試圖使用虛擬數(shù)據(jù)(代碼片段中的第2行)

//$postData = '{"body":"characters here ","subject":"subject here","username":"janus","from_id":"185","to_id":"62"}';

我成功地將表情符號字符插入數(shù)據(jù)庫中.我不知道為什么但是當數(shù)據(jù)來自設備時它不同工作($postData = file_get_contents(“php：// input”))

這就是我在客戶端編碼和發(fā)布數(shù)據(jù)的方式.

    NSMutableDictionary *messageDetails = [[NSMutableDictionary alloc] init];[messageDetails setObject:[loginItems objectForKey:@"user_id"] forKey:@"from_id"];[messageDetails setObject:recipientID forKey:@"to_id"];[messageDetails setObject:@"subject here" forKey:@"subject"];[messageDetails setObject:newMessageField.text forKey:@"body"];    [messageDetails setObject:[loginItems objectForKey:@"username"] forKey:@"username"];NSString *strPostData = [messageDetails JSONRepresentation];[messageDetails release];NSData *postData = [NSData dataWithBytes:[strPostData   UTF8String] length:[strPostData  length]];[urlRequest setHTTPMethod:@"POST"];[urlRequest setHTTPBody:postData];

BTW,誰制作了這些表情符號字符？他毀了我的命！

解決方法:

一旦將數(shù)據(jù)發(fā)送到您的php腳本,您需要將其轉(zhuǎn)換為多字節(jié)字符串：

$content = mb_convert_encoding($content, 'UTF-8');

你可以使用這個功能：

function cb($content){  if(!mb_check_encoding($content, 'UTF-8')   OR !($content === mb_convert_encoding(mb_convert_encoding($content, 'UTF-32', 'UTF-8' ), 'UTF-8', 'UTF-32'))) {    $content = mb_convert_encoding($content, 'UTF-8');  }  return $content;}

編輯：數(shù)據(jù)可能是我們的類型application / x-www-form-urlencoded并且該函數(shù)正確轉(zhuǎn)換了它.