本文实例讲述了PHP与JavaScript针对Cookie的读写、交互操作方法。分享给大家供大家参考,具体如下:
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。
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<?php
setcookie( 'php_cn_ck' , 'php_中文_cookie' );
setcookie( 'php_en_ck' , 'php_english_cookie' );
?>
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<script src= "cookie.js" ></script>
<script>
Cookies.set( 'js_cn_ck' , 'js_中文_cookie' ,5000);
Cookies.set( 'js_en_ck' , 'js_english_cookie' );
</script>
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PHP cookie已经设置:
php_cn_ck=php_中文_cookie
php_en_ck=php_english_cookie
JS cookie已经设置:
js_cn_ck=js_中文_cookie
js_en_ck=js_english_cookie
读取cookie
一 读取php传送的中英文cookie
1 php读取php设置php cookie
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<?php
include ( 'function.php' );
$php_cn_ck = $_COOKIE [ 'php_cn_ck' ];
$un_php_cn_ck =unescape( $php_cn_ck );
echo "解码前的中文cookie:php_cn_ck=$php_cn_ck<br><br>" ;
echo "解码后的中文cookie:un_php_cn_ck=$un_php_cn_ck<br><br>" ;
$php_en_ck = $_COOKIE [ 'php_en_ck' ];
echo "英文cookie无需解码:php_en_ck=$php_en_ck<br><br>" ;
?>
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2 js读取php设置cookie
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<script src= "cookie.js" ></script>
<script>
php_cn_ck=Cookies.get( 'php_cn_ck' );
un_php_cn_ck = decodeURIComponent (escape(php_cn_ck));
document.write( "解码前的中文cookie :php_cn_ck=" +php_cn_ck+ "<Br><br>" );
document.write( "解码后的中文cookie :un_php_cn_ck=" +un_php_cn_ck+ "<Br><br>" );
php_en_ck=Cookies.get( 'php_en_ck' );
document.write( "英文cookie无需解码 :php_en_ck=" +php_en_ck+ "<Br><br>" );
</script>
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二 读取JS传送的中英文cookie
1 php读取JS设置js cookie
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<?php
$js_cn_ck = $_COOKIE [ 'js_cn_ck' ];
$un_js_cn_ck =unescape( $js_cn_ck );
echo "解码前的中文cookie:js_cn_ck=$js_cn_ck<br><br>" ;
echo "解码后的中文cookie:un_js_cn_ck=$un_js_cn_ck<br><br>" ;
$js_en_ck = $_COOKIE [ 'js_en_ck' ];
echo "英文cookie无需解码:js_en_ck=$js_en_ck<br><br>" ;
?>
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2 js读取js设置的cookie
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<script>
js_cn_ck=Cookies.get( 'js_cn_ck' );
document.write( "解码前的中文cookie :js_cn_ck=" +js_cn_ck+ "<Br><br>" );
//un_js_cn_ck = decodeURIComponent (escape(js_cn_ck)); 调用这两句会出现js解析中断
//document.write("解码后的中文cookie :un_js_cn_ck="+un_js_cn_ck+"<Br><br>");
js_en_ck=Cookies.get( 'js_en_ck' );
document.write( "英文cookie无需解码 :js_en_ck=" +js_en_ck+ "<Br><br>" );
</script>
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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:
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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));
};
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希望本文所述对大家PHP程序设计有所帮助。