TP框架设置验证码

thinkphp框架有专门的的验证码生成的模块

public function shengcheng(){
		
		$n = new ThinkVerify();
		$n->entry();	
	}

下面是验证模块：

public function ceshi(){
		
		if(!IS_POST)
		{
			$this->show();
		}
		else
		{
			$yzm = I('post.yzm');
			$config = array(
				'reset' => false // 验证成功后是否重置，这里才是有效的。
				);
			$n = new ThinkVerify($config); 
			if($n->check($yzm))
			{
				$this->ajaxReturn("y","eval");
			}
			else
			{
				$this->ajaxReturn("n","eval");
			}
		}
		
	}

　前台界面：

<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script src="__PUBLIC__/jquery-1.11.2.min.js" type="text/javascript" charset="utf-8"></script>
	</head>
	<body>
		<img src="__CONTROLLER__/shengcheng"/>	
		<input type="text"  id="yzm"  />
	</body>
	<script type="text/javascript">
	$("#yzm").blur(function(){
		var yzm = $(this).val();
		$.ajax({
			type:"post",
			url:"__ACTION__",
			data:{yzm:yzm},
			dataType:"TEXT",
			success:function(r){
				alert(r);
			}
		});
	})
		
	</script>
</html>