Comparison of cookie operation methods in php and js

 setcookie('php_cn_ck','php_中文_cookie');
 setcookie('php_en_ck','php_english_cookie');
?>

<script> </li>
<li> Cookies.set('js_cn_ck','js_中文_cookie',5000); </li>
<li> Cookies.set('js_en_ck','js_english_cookie'); </li>
<li>&lt ;/script> </li>
<li><meta http-equiv="Content-Type" content="text/html; charset=utf8"> </li>
<li>PHP cookies have been set: php_cn_ck=php_中文_cookie, php_en_ck=php_english_cookie. </li>
<li>JS cookies have been set: js_cn_ck=js_中文_cookie, js_en_ck=js_english_cookie. </li>
<li><a href=getcookie.php>Read cookie</a><br> </li>
<li><meta http-equiv="Content-Type" content="text/html; charset=utf8"></li>
</ol></div>
<em onclick="copycode($('code_Ke6'));"> Copy the code </em>
</div>
<p>1, read the Chinese and English cookies sent by php<br><br>
1. php reads php and sets php cookie
 </p>
<div class="blockcode">
<div id="code_LTZ"><ol>
<li>
<li><?php </li>
<li> include('function.php'); </li>
<li> $php_cn_ck=$_COOKIE['php_cn_ck']; </li>
<li> $un_php_cn_ck=unescape($php_cn_ck); </li>
<li> echo "Chinese cookie before decoding :php_cn_ck=$php_cn_ck<br><br>"; </li>
<li> echo "Decoded Chinese cookie:un_php_cn_ck=$un_php_cn_ck<br><br>"; </li>
<li> $php_en_ck=$_COOKIE['php_en_ck']; </li>
<li> echo "English cookies do not need to be decoded: php_en_ck=$php_en_ck<br><br>"; </li>
<li>?></li>
</ol></div>
<em onclick="copycode($('code_LTZ'));">Copy code</em>
</div>
<p>2, js reads php to set cookies<br><br>
 </p>
<div class="blockcode">
<div id="code_lnN"><ol>
<li>
<li><script src="cookie.js"></script>
<script> </li>
<li> php_cn_ck=Cookies.get('php_cn_ck'); </li>
<li> un_php_cn_ck = decodeURIComponent (escape(php_cn_ck) ) ; </li>
<li> document.write("Chinese cookie before decoding: php_cn_ck="+php_cn_ck+"<Br><br>"); </li>
<li> document.write("Chinese cookie after decoding: un_php_cn_ck="+un_php_cn_ck+"< Br><br>"); </li>
<li> php_en_ck=Cookies.get('php_en_ck'); </li>
<li> document.write("English cookies do not need to be decoded: php_en_ck="+php_en_ck+"<Br><br>"); </li>
<li> </script>

Second, read the Chinese and English cookies sent by JS 1. PHP reads JS and sets js cookie

 $js_cn_ck=$_COOKIE['js_cn_ck'];
 $un_js_cn_ck=unescape($js_cn_ck);
 echo "Chinese cookie before decoding:js_cn_ck=$js_cn_ck";
 echo " Decoded Chinese cookie: un_js_cn_ck=$un_js_cn_ck";
 $js_en_ck=$_COOKIE['js_en_ck'];
 echo "English cookie does not need to be decoded: js_en_ck=$js_en_ck";
?>

2, js reads the cookie set by js

<script> </li>
<li> js_cn_ck=Cookies.get('js_cn_ck'); </li>
<li> document.write("Chinese cookie before decoding: js_cn_ck="+js_cn_ck+"<Br><br>") ; </li>
<li> //un_js_cn_ck = decodeURIComponent (escape(js_cn_ck)); Calling these two sentences will cause js parsing interruption </li>
<li> //document.write("Decoded Chinese cookie: un_js_cn_ck="+un_js_cn_ck+"<Br><br> "); </li>
<li> js_en_ck=Cookies.get('js_en_ck'); </li>
<li> document.write("English cookies do not need to be decoded: js_en_ck="+js_en_ck+"<Br><br>"); </li>
<li></script>

Summary: 1. PHP uses its own function to read PHP cookies without any obstacles and without decoding. 2. js uses the cookie.js method to read js cookies without any obstacles and without decoding. 3. To read the Chinese cookie of PHP with js, you need to do "decodeURIComponent (escape(php_cn_ck))" function processing. 4. PHP needs to use the "unescape()" function to read the Chinese cookie of JS. Code:

var Cookies = {};
/**
* Set 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" : "");
 };
 /**
 * Read 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;
 };
 /**
 * Clear 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));
 };