php verification code error refresh

PHP implements automatic refresh of verification code input errors

After verification code verification fails, $this->error('Verification code does not exist) Correct!') processing. If an error occurs, it will automatically return to the previous page, but the verification code will not be refreshed after returning. At this time, you can use $this->success('The verification code is incorrect!') to handle it, followed by an exit statement to stop the execution and prevent two prompt screens from appearing. In this way, when returning to the login page, the verification code will be automatically refresh.

Code:

$this->success('验证码不正确!');exit;

Attached is the source code processing method when there is no second parameter
success

if(!isset($this->jumpUrl))     
$this->assign("jumpUrl",$_SERVER["HTTP_REFERER"]);

error

if(!isset($this->jumpUrl))     
$this->assign('jumpUrl',"javascript:history.back(-1);");

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