在控制器中：

/***输出验证码*/publicfunctiongetverify(){$VModle=new\Think\Verify();$VModle->codeSet='0123456789';$VModle->length=4;$VModle->entry();}


在页面中的html

<inputtype="text"name="verify"placeholder="验证码"class="form-control"><imgid="verifyimg"src="{:U('Public/getverify')}"width="100">


javacsript即时刷新

$("#verifyimg").click(function(){varverifyURL="{:U('Public/getverify','','')}";vartime=newDate().getTime();$(this).attr({"src":verifyURL+"/"+time});});


异步验证是否正确：

/***异步验证验证码是否正确*@paramsverify;*/publicfunctionajaxcheckverify(){if(!IS_POST){$data['status']=0;}else{$VModle=new\Think\Verify();$code=trim(I('verify'));if(!$VModle->check($code)){$data['status']=0;$data['data']=$code;}else{//验证成功$data['status']=1;}}echojson_encode($data);}