kindeditor+mysql上传编辑好的有文字和图片的文章，结果数据库里什么都没有

KindEditor PHP

KindEditor.ready(function(K) {
var editor1 = K.create('textarea[name="content1"]', {
cssPath : './editor/plugins/code/prettify.css',
uploadJson : './editor/php/upload_json.php',
fileManagerJson : './editor/php/file_manager_json.php',
allowFileManager : true,
afterCreate : function() {
var self = this;
K.ctrl(document, 13, function() {
self.sync();
K('form[name=example]')[0].submit();
});
K.ctrl(self.edit.doc, 13, function() {
self.sync();
K('form[name=example]')[0].submit();
});
}
});
prettyPrint();
});

 <?php echo htmlspecialchars($htmlData); ?> 
  (提交快捷键: Ctrl + Enter)

$htmlData = '';
if (!empty($_POST['content1'])) {
if (get_magic_quotes_gpc()) {
$htmlData = stripslashes($_POST['content1']);
} else {
$htmlData = $_POST['content1'];
}
}
include_once("function.php");
include_once("conn/conn.php");

echo "$htmlData";
mysql_query("insert into tb_talk ('img') values ('".$htmlData."')",$conn);
echo 成功；
?>