数据库传不进去！

function sendmsg() {	global $messagereturn,$web_dbprefix;	$username=trim($_post['username']);	$username1=trim($_post['username1']);	$msgcontent=checkhtml(trim($_post['msgcontent']));	$dtime=date("y-m-d h:i:s");		if($username=='' || $username==null) {		$messagereturn[1]="姓名不能为空";		error($messagereturn);	}		if($username1=='' || $username1==null) {		$messagereturn[1]="姓名不能为空";		error($messagereturn);	}	if($msgcontent=='' || $msgcontent==null){		$messagereturn[1]="内容不能为空";		error($messagereturn);	}		$sql="insert into {$web_dbprefix}message(username,username1,msgcontent,datetime) values('$username','$username1','$msgcontent','$dtime')";	$result = conn_db() -> query($sql);	if($result==true){		$messagereturn[0]=1;		$messagereturn[1]="留言成功";		error($messagereturn);	}else{		$messagereturn[1]="留言失败";		error($messagereturn);	}}

	<table border="0" cellpadding="2" cellspacing="1">			<tr>				<td width="60px"><label for="username">姓名(*)：</label></td>				<td><input type="text" name="username" id="username" value="" /></td>			</tr>			<tr>				<td width="60px"><label for="username1">姓名1(*)：</label></td>				<td><input type="text" name="username1" id="username1" value="" /></td>			</tr>			<tr>				<td width="80px"><label for="content">内容(*)：</label></td>				<td><textarea name="msgcontent" id="msgcontent"></textarea></td>			</tr>			<tr>				<td width="60px"></td>				<td><input name="submit" type="button" class="bt" id="bt_send" value="提交留言" onclick="return chkform();" /><span id="sending"></span></td>			</tr>			</table>

username1为什么传不进去 总是提示为空

回复讨论(解决方案)

你这是什么传法，没见过，连form表单都没有

<form>		<div class="posttip">		<ul id="skin">						<li id="skin_blue" title="蓝色" class="selected">蓝色</li>			<li id="skin_green" title="绿色">绿色</li>			<li id="skin_red" title="红色">红色</li>			<li id="skin_yellow" title="黄色">黄色</li>		</ul>		<?php		if(!empty($_SESSION['fig']) && $_SESSION['fig']!=''){		?>		<span class="building">欢迎, <?php echo $_SESSION["adminuser"] ?>  <a href="changepwd.php" class="changepwd" target="_blank">修改密码</a>  <a href="javascript:logout();">注销</a>  </span>		<?php		}		?>		发表留言		</div>		<div class="postarea">			<table border="0" cellpadding="2" cellspacing="1">			<tr>				<td width="60px"><label for="username">姓名(*)：</label></td>				<td><input type="text" name="username" id="username" value="" /></td>			</tr>			<tr>				<td width="60px"><label for="username1">姓名1(*)：</label></td>				<td><input type="text" name="username1" id="username1" value="" /></td>			</tr>			<tr>				<td width="80px"><label for="content">内容(*)：</label></td>				<td><textarea name="msgcontent" id="msgcontent"></textarea></td>			</tr>			<tr>				<td width="60px"></td>				<td><input name="Submit" type="button" class="bt" id="bt_send" value="提交留言" onclick="return chkForm();" /><span id="sending"></span></td>			</tr>			</table>		</div>		</form>

你想用post传值怎么不告诉form表单了

print_r($_POST); 看看