本文实例讲述了Zend Framework动作助手Json用法。分享给大家供大家参考,具体如下:
Json的使用较简单,以下是文档给出的用法:
Json 用来解码和发送 JSON 响应;
当处理期望数据表响应的 AJAX 请求,JSON 响应迅速变成选择的响应。
JSON 可以立即在客户端被解析,从而快速执行。
JSON 动作助手完成以下任务:
如果布局是打开(enabled)的,则关闭(disable)它。
如果视图解析器(ViewRenderer)是打开的,则关闭它。
设置 'Content-Type' 响应头为 'application/json'。
缺省地,不需要等待动作执行完成,立即返回响应。
用法很简单:或者把它作为助手代理的方法来调用,或者调用 encodeJson() 和 sendJson() 方法的其中之一:
class FooController extends Zend_Controller_Action { public function barAction() { // do some processing... // Send the JSON response: $this->_helper->json($data); // or... $this->_helper->json->sendJson($data); // or retrieve the json: $json = $this->_helper->json->encodeJson($data); } }
Note: 保持布局 (Keeping Layouts)
如果你为 JSON 响应有分离的布局 - 也许把 JSON 封装到一些上下文 - 在 JSON 助手的每个方法接受第二个可选的参数:打开或关闭布局的 flag ,传递一个布尔 true 值将使布局保持打开:
class FooController extends Zend_Controller_Action { public function barAction() { // Retrieve the json, keeping layouts: $json = $this->_helper->json->encodeJson($data, true); } }
更多关于zend相关内容感兴趣的读者可查看本站专题:《Zend FrameWork框架入门教程》、《php优秀开发框架总结》、《Yii框架入门及常用技巧总结》、《ThinkPHP入门教程》、《php面向对象程序设计入门教程》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》
希望本文所述对大家PHP程序设计有所帮助。

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