使用单例模式取得JSON信息

beta/fun/cls.php

@@ -0,0 +1,65 @@
+<?php
+
+class infoMgr{
+
+	public static $handle;
+	static private $_instance=NULL; 
+
+	private function __construct(){}
+	private function __clone(){}
+
+	static function getInstance(){
+		if(self::$_instance==NULL){
+			self::$_instance=new infoMgr();
+		}
+		return self::$_instance;
+	}
+
+	protected function read(){
+		do{
+			$data = fread(self::$handle, 1024);
+			if (strlen($data) == 0) {break;}
+			$contents .= $data;
+		}while(true);
+
+		return $contents;
+	}
+}
+
+class decodeJSON{
+	protected $contents;
+	function __construct($contents){$this->contents=$contents;}
+
+	function decode(){return json_decode($this->contents);}
+}
+
+class todayMgr extends infoMgr{
+	protected $infomgr;
+
+	function __construct(infoMgr $infoMgr){$this->infomgr=$infoMgr;}
+
+	function getJSON($url=NULL){
+		parent::$handle=fopen("http://news-at.zhihu.com/api/3/news/latest","rb");
+		if(parent::$handle){
+			return $this->infomgr->read();
+		}else{return false;}
+	}
+
+	function getContext(decodeJSON $DJSON){
+		$jsonData=$DJSON->decode();
+		return $jsonData;
+	}
+}
+
+class beforeMgr extends infoMgr{
+
+}
+
+
+$im=infoMgr::getInstance();
+$tm=new todayMgr($im);
+//echo $tm->getJSON();
+
+print_r($tm->getContext(new decodeJSON($tm->getJSON())));
+
+?>