thinkphp jump page encapsulation tutorial
ThinkPHP is an open source PHP development framework that provides powerful MVC pattern support, allowing developers to quickly develop robust Web applications. When developing web applications, page jumps are often required. For example, after a user successfully logs in, he or she needs to jump to the user interface. This article will introduce how to use ThinkPHP to jump to pages and encapsulate a jump page function.
1. Use ThinkPHP for page jump
ThinkPHP provides two built-in functions for page jump:
- redirect() function
The redirect() function is used to jump to the specified URL address. Its syntax is as follows:
redirect('url', '参数', '状态码')->send();Among them:
- url: The URL address to be redirected.
- Parameters: GET method parameters, which can be arrays or strings.
- Status code: HTTP status code, such as 302 for redirection and 301 for permanent redirection.
For example, to jump to the http://www.example.com/user/index page, the code is as follows:
redirect('http://www.example.com/user/index')->send();- success() and error() Function
The success() and error() functions are used to display a prompt message when the page jumps. The success prompt information uses the success() function, and the failure prompt information uses the error() function. Their syntax is as follows:
success('提示信息', '跳转URL', '等待时间')->send();
error('提示信息', '跳转URL', '等待时间')->send();Among them:
- Prompt information: the information to be displayed, which can be a string or an array.
- Jump URL: The URL address to be jumped can be omitted.
- Waiting time: waiting time in seconds, the default is 1 second and can be omitted.
For example, to display a success message and jump to the http://www.example.com/user/index page, the code is as follows:
success('登录成功', 'http://www.example.com/user/index')->send();2. Encapsulation jump Page transfer function
In order to facilitate reuse, we can encapsulate page jumps. The following is a simple jump page function code:
/**
* 跳转页函数
*
* @param string $url 要跳转的URL地址
* @param string $message 信息提示
* @param int $waitTime 等待时间
* @return void
*/
function jump($url, $message = '', $waitTime = 1) {
if (empty($url)) {
exit('错误：未指定跳转URL地址！');
}
if (!empty($message)) {
$message = htmlspecialchars($message);
}
if ($waitTime == 0) {
header("Location: {$url}");
exit;
}
$css = <<<EOF
<style type="text/css">
.jump {
text-align:center;
padding-top:5%;
font-family: 'Microsoft Yahei', Verdana, Arial;
font-size:16px;
}
.jump h3 {
font-size:24px;
font-weight:bold;
}
</style>
EOF;
$html = <<<EOF
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>跳转提示</title>
{$css}
</head>
<body>
<div class="jump">
<h3>跳转提示</h3>
<p>{$message}</p>
<p>等待时间：<span id="wait_time">{$waitTime}</span>秒</p>
<p><a href="{$url}">立即跳转</a></p>
</div>
<script type="text/javascript">
var wait_time = {$waitTime};
var interval = setInterval(function(){
if(wait_time > 0) {
wait_time--;
document.getElementById('wait_time').innerHTML = wait_time;
} else {
clearInterval(interval);
window.location.href = '{$url}';
}
}, 1000);
</script>
</body>
</html>
EOF;
echo $html;
}Using the above encapsulation function, the following code can be implemented in the controller:
public function login() {
if($this->request->post()){
$data = $this->request->post();
// 验证码验证
$user = UserModel::where('username', $data['username'])->find();
if(!$user || $user->password != $data['password']){
jump(url('login/index'), '用户名或密码错误', 3);
} else {
jump(url('user/index'), '登录成功', 3);
}
}
return $this->fetch();
}The above is to use ThinkPHP to jump to the page and encapsulate the jump. Tutorial on page turning function. Use wrapper functions to easily reuse them in different controllers.
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