无法使用AFHTTPRequest操作发布方法将希伯来语文本插入mysql db

我正在尝试将一些希伯来语文本从应用程序插入到mysql数据库，但值未插入数据库。该方法适用于英语，但希伯来语文本有问题。它有时不会插入到数据库中，而是显示文本垃圾值。

目标 C 代码是

-(void)updateDatabase{
NSURL *url = [NSURL URLWithString:@"http://site.com/api/"];
AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];
NSDictionary *params = [[NSDictionary alloc] initWithObjectsAndKeys:image_name, @"image_name", invoice_no, @"invoice_no", photoReason, @"photo_reason", photoReasonText, @"photo_reason_text", txtField_1.text, @"user_info_1", txtField_2.text , @"user_info_2", txtField_3.text, @"user_info_3", txtField_4.text, @"user_info_4", txtField_5.text, @"user_info_5", txtField_6.text, @"user_info_6", txtField_7.text, @"user_info_7", nil];
NSLog(@"Params: %@", [params valueForKey:@"user_info_6"]);
NSMutableURLRequest *request = [httpClient requestWithMethod:@"POST" path:@"upload_info.php" parameters:params];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
[operation setUploadProgressBlock:^(NSInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite) {
    NSLog(@"Sent %lld of %lld bytes", totalBytesWritten, totalBytesExpectedToWrite);
}];
[operation  setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"success: %@", operation.responseString);
    SBJSON *parser = [[SBJSON alloc] init];
    NSMutableArray *statuses = [parser objectWithString:operation.responseString error:nil];
    int status = [[statuses valueForKey:@"status"] integerValue];
    if (status == 0) {
        invoice_no = [statuses valueForKey:@"invoice_no"];
        NSLog(@"Invoice No: %@", statuses);
        percentLabel.text = @"80%";
        [self pushView:4];
        [self pay];
    }
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Success" message:@"Card Images Are Uploaded." delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
    percentLabel.text = @"70%";
}
                                  failure:^(AFHTTPRequestOperation *operation, NSError *error) {
                                      NSLog(@"error: %@",  operation.responseString);

                                      UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error..." message:operation.responseString delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
                                      [alert show];
                                  }];
[operation start];

}

而 PHP 代码是

<?php
include "constants.php";
$APIVersion = "1.0";
$commandName = $commandUploadInfo;
$image_name         = $_POST['image_name'];
$invoice_no         = $_POST['invoice_no'];
$photo_reason       = $_POST['photo_reason'];
$photo_reason_text  = $_POST['photo_reason_text'];
$user_info_1        = $_POST['user_info_1'];
$user_info_2        = $_POST['user_info_2'];
$user_info_3        = $_POST['user_info_3'];
$user_info_4        = $_POST['user_info_4'];
$user_info_5        = $_POST['user_info_5'];
$user_info_6        = $_POST['user_info_6'];
$user_info_7        = $_POST['user_info_7'];
$link = mysql_pconnect($dbhost, $dbuser, $dbpass)
or
die("{'"method'":'"".$commandName."'",".
    "'"version'":'"".$APIVersion."'",".
    "'"status'":-2,".
    "'"message'":'"Could not connect to database'",".
    "'"debug'":'"".mysql_error()."'"".
    "}");
mysql_select_db($dbname)
or
die("{'"method'":'"".$commandName."'",".
    "'"version'":'"".$APIVersion."'",".
    "'"status'":-2,".
    "'"message'":'"Could not select database'",".
    "'"debug'":'"".mysql_error()."'"".
    "}");

$insertSQL = "INSERT INTO ".
"`image_info2`(
 `image_name` ,
 `invoice_no` ,
 `photo_reason` ,
 `photo_reason_text` ,
 `user_info_1` ,
 `user_info_2` ,
 `user_info_3` ,
 `user_info_4` ,
 `user_info_5` ,
 `user_info_6` ,
 `user_info_7`
)".
"VALUES ('$image_name', '$invoice_no', '$photo_reason', '$photo_reason_text', '$user_info_1', '$user_info_2', '$user_info_3', '$user_info_4', '$user_info_5', '$user_info_6', '$user_info_7');";
mysql_query($insertSQL)
or
die("{'"method'":'"".$commandName."'",".
    "'"version'":'"".$APIVersion."'",".
    "'"status'":-2,".
    "'"message'":'"Failed to execute query'",".
    "'"debug'":'"".mysql_error()."'"".
    "}");
echo "{".
"'"method'":'"" . $commandName . "'",".
"'"version'":'"" . $APIVersion . "'",".
"'"status'":0,".
"'"id'":'"Info uploaded successfully'"".
"}";

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