PHP与JavaScript下的Cookie操作

下面的例子列出几种情形交互场景，列出JS和php交互的方法。总结下，以免日后再为cookie问题困扰。

setcookie.php

getcookie.php

总结:

1. php用自身函数读取php 的cookie，没有任何障碍，无需解码处理。
2. js采用cookie.js方法读取js 的cookie，没有任何障碍，无需解码处理。
3. js读取php的中文cookie，需要做 "decodeURIComponent (escape(php_cn_ck)) "函数处理
4. php读取js的中文cookie 需要做 "unescape()" 函数处理

cookie.js

	var Cookies = {};
	/**
	* 设置Cookies
	*/
	Cookies.set = function(name, value){
		var argv = arguments;
		var argc = arguments.length;
		var expires = (argc > 2) ? argv[2] : null;
		if(expires != null){
        	var exp　　 = new Date();
	 		exp.setTime(exp.getTime() + 8*3600 + expires);
		}
		alert(exp.toGMTString());
		var path = (argc > 3) ? argv[3] : '/';
		var domain = (argc > 4) ? argv[4] : null;
      	var secure = (argc > 5) ? argv[5] : false;
		document.cookie = name + "=" + escape (value) +
		((expires == null) ? "" : ("; expires=" + exp.toGMTString())) +
		((path == null) ? "" : ("; path=" + path)) +
		((domain == null) ? "" : ("; domain=" + domain)) +
		((secure == true) ? "; secure" : "");
	};
	/**
	* 读取Cookies
	*/
	Cookies.get = function(name){
		var arg = name + "=";
		var alen = arg.length;
		var clen = document.cookie.length;
		var i = 0;
		var j = 0;
		while(i < clen){
			j = i + alen;
			if (document.cookie.substring(i, j) == arg)
				return Cookies.getCookieVal(j);
			i = document.cookie.indexOf(" ", i) + 1;
			if(i == 0)
				break;
		}
		return null;
	};
	/**
	* 清除Cookies
	*/
	Cookies.clear = function(name) {
		if(Cookies.get(name)){
		var expdate = new Date();
		expdate.setTime(expdate.getTime() - (86400 * 1000 * 1));
		Cookies.set(name, "", expdate);
	}
};
	Cookies.getCookieVal = function(offset){
		var endstr = document.cookie.indexOf(";", offset);
		if(endstr == -1){
			endstr = document.cookie.length;
		}
		return unescape(document.cookie.substring(offset, endstr));
	};

4 function.php

　　

参考：http://www.nowamagic.net/webdesign/webdesign_CookieInPhpJavascript.phpPHP与JavaScript下的Cookie操作