[转]JavaScript 版本的 PHP serialize/unserialize 完整实现


本文来自于:http://www.coolcode.cn/?p=171
作者:Ma Bingyao


以前写 PHPRPC 实现时,JavaScript 版本的序列化实现是修改自 http://www.devpro.it/code/102.html 的,这个实现虽然目前仍然在更新,不过它并没有完全实现 PHP 序列化的所有标记,因此它无法序列化复杂对象,例如嵌套对象,也无法反序列化所有的 PHP 序列化以后的内容。因此我重新编写了一个实现,这个实现与 PHP 5 的序列化完全兼容,并且可以反序列化 PHP 4、PHP 5 和 PHP 6 序列化的内容。支持魔术方法 __sleep 和 __wakeup,支持实现了 Serializable 接口的序列化和反序列化(在 JavaScript 没有接口的概念,因此只要对象中包含 serialize 和 unserialize 方法就可以了,关于 Serializable 接口与自定义序列化的更多内容请参见:PHP 序列化(serialize)格式详解——自定义对象序列化)。该实现兼容以下版本的浏览器(已测试):

//IE 4+(包括 Windows Vista 的 IE 7+ 与 Windows Mobile 2003/Windows Moblie 5 的 IE 4)
//Mozilla/Firefox
//Opera(包括 Opera Mini 和 Opera Mobile,但对于 Opera Mobile 8.5 beta 2 for Windows Mobile 5 Pocket PC 对象序列化时,对象名的序列化支持的不完整,而其他版本都正常。)
//Konqueror
//Safari
//Epiphany
//其他浏览器未测试,但应该基本上只要支持 JavaScript 的浏览器都可以支持(有条件的用户希望能够帮忙测试)。

本程序中需要调用 utf.js 中的 utf16to8 和 utf8to16 这两个函数来进行字节流与 JavaScript 字符串之间的转换。

下载: phpserializer.js

/* phpserializer.js - JavaScript to PHP serialize / unserialize class.
*
* This class is designed to convert php variables to javascript
* and javascript variables to php with a php serialize unserialize
* compatible way.
*
* Copyright (C) 2006 Ma Bingyao <[email protected]>
* Version: 3.0c
* LastModified: Jun 2, 2006
* This library is free. You can redistribute it and/or modify it.
* http://www.coolcode.cn/?p=171
*/

function serialize(o) {
var p = 0, sb = [], ht = [], hv = 1;
function classname(o) {
if (typeof(o) == "undefined" || typeof(o.constructor) == "undefined") return '';
var c = o.constructor.toString();
c = utf16to8(c.substr(0, c.indexOf('(')).replace(/(^/s*function/s*)|(/s*$)/ig, ''));
return ((c == '') ? 'Object' : c);
}
function is_int(n) {
var s = n.toString(), l = s.length;
if (l > 11) return false;
for (var i = (s.charAt(0) == '-') ? 1 : 0; i < l; i++) {
switch (s.charAt(i)) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9': break;
default : return false;
}
}
return !(n < -2147483648 || n > 2147483647);
}
function in_ht(o) {
for (k in ht) if (ht[k] === o) return k;
return false;
}
function ser_null() {
sb[p++] = 'N;';
}
function ser_boolean(b) {
sb[p++] = (b ? 'b:1;' : 'b:0;');
}
function ser_integer(i) {
sb[p++] = 'i:' + i + ';';
}
function ser_double(d) {
if (d == Number.POSITIVE_INFINITY) d = 'INF';
else if (d == Number.NEGATIVE_INFINITY) d = '-INF';
sb[p++] = 'd:' + d + ';';
}
function ser_string(s) {
var utf8 = utf16to8(s);
sb[p++] = 's:' + utf8.length + ':"';
sb[p++] = utf8;
sb[p++] = '";';
}
function ser_array(a) {
sb[p++] = 'a:';
var lp = p;
sb[p++] = 0;
sb[p++] = ':{';
for (var k in a) {
if (typeof(a[k]) != 'function') {
is_int(k) ? ser_integer(k) : ser_string(k);
__serialize(a[k]);
sb[lp]++;
}
}
sb[p++] = '}';
}
function ser_object(o) {
var cn = classname(o);
if (cn == '') ser_null();
else if (typeof(o.serialize) != 'function') {
sb[p++] = 'O:' + cn.length + ':"';
sb[p++] = cn;
sb[p++] = '":';
var lp = p;
sb[p++] = 0;
sb[p++] = ':{';
if (typeof(o.__sleep) == 'function') {
var a = o.__sleep();
for (var kk in a) {
ser_string(a[kk]);
__serialize(o[a[kk]]);
sb[lp]++;
}
}
else {
for (var k in o) {
if (typeof(o[k]) != 'function') {
ser_string(k);
__serialize(o[k]);
sb[lp]++;
}
}
}
sb[p++] = '}';
}
else {
var cs = o.serialize();
sb[p++] = 'C:' + cn.length + ':"';
sb[p++] = cn;
sb[p++] = '":' + cs.length + ':{';
sb[p++] = cs;
sb[p++] = "}";
}
}
function ser_pointref(R) {
sb[p++] = "R:" + R + ";";
}
function ser_ref(r) {
sb[p++] = "r:" + r + ";";
}
function __serialize(o) {
if (o == null || o.constructor == Function) {
hv++;
ser_null();
}
else switch (o.constructor) {
case Boolean: {
hv++;
ser_boolean(o);
break;
}
case Number: {
hv++;
is_int(o) ? ser_integer(o) : ser_double(o);
break;
}
case String: {
hv++;
ser_string(o);
break;
}
case Array: {
var r = in_ht(o);
if (r) {
ser_pointref(r);
}
else {
ht[hv++] = o;
ser_array(o);
}
break;
}
default: {
var r = in_ht(o);
if (r) {
hv++;
ser_ref(r);
}
else {
ht[hv++] = o;
ser_object(o);
}
break;
}
}
}
__serialize(o);
return sb.join('');
}

function unserialize(ss) {
var p = 0, ht = [], hv = 1; r = null;
function unser_null() {
p++;
return null;
}
function unser_boolean() {
p++;
var b = (ss.charAt(p++) == '1');
p++;
return b;
}
function unser_integer() {
p++;
var i = parseInt(ss.substring(p, p = ss.indexOf(';', p)));
p++;
return i;
}
function unser_double() {
p++;
var d = ss.substring(p, p = ss.indexOf(';', p));
switch (d) {
case 'INF': d = Number.POSITIVE_INFINITY; break;
case '-INF': d = Number.NEGATIVE_INFINITY; break;
default: d = parseFloat(d);
}
p++;
return d;
}
function unser_string() {
p++;
var l = parseInt(ss.substring(p, p = ss.indexOf(':', p)));
p += 2;
var s = utf8to16(ss.substring(p, p += l));
p += 2;
return s;
}
function unser_array() {
p++;
var n = parseInt(ss.substring(p, p = ss.indexOf(':', p)));
p += 2;
var a = [];
ht[hv++] = a;
for (var i = 0; i < n; i++) {
var k;
switch (ss.charAt(p++)) {
case 'i': k = unser_integer(); break;
case 's': k = unser_string(); break;
case 'U': k = unser_unicode_string(); break;
default: return false;
}
a[k] = __unserialize();
}
p++;
return a;
}
function unser_object() {
p++;
var l = parseInt(ss.substring(p, p = ss.indexOf(':', p)));
p += 2;
var cn = utf8to16(ss.substring(p, p += l));
p += 2;
var n = parseInt(ss.substring(p, p = ss.indexOf(':', p)));
p += 2;
if (eval(['typeof(', cn, ') == "undefined"'].join(''))) {
eval(['function ', cn, '(){}'].join(''));
}
var o = eval(['new ', cn, '()'].join(''));
ht[hv++] = o;
for (var i = 0; i < n; i++) {
var k;
switch (ss.charAt(p++)) {
case 's': k = unser_string(); break;
case 'U': k = unser_unicode_string(); break;
default: return false;
}
if (k.charAt(0) == '/0') {
k = k.substring(k.indexOf('/0', 1) + 1, k.length);
}
o[k] = __unserialize();
}
p++;
if (typeof(o.__wakeup) == 'function') o.__wakeup();
return o;
}
function unser_custom_object() {
p++;
var l = parseInt(ss.substring(p, p = ss.indexOf(':', p)));
p += 2;
var cn = utf8to16(ss.substring(p, p += l));
p += 2;
var n = parseInt(ss.substring(p, p = ss.indexOf(':', p)));
p += 2;
if (eval(['typeof(', cn, ') == "undefined"'].join(''))) {
eval(['function ', cn, '(){}'].join(''));
}
var o = eval(['new ', cn, '()'].join(''));
ht[hv++] = o;
if (typeof(o.unserialize) != 'function') p += n;
else o.unserialize(ss.substring(p, p += n));
p++;
return o;
}
function unser_unicode_string() {
p++;
var l = parseInt(ss.substring(p, p = ss.indexOf(':', p)));
p += 2;
var sb = [];
for (i = 0; i < l; i++) {
if ((sb[i] = ss.charAt(p++)) == '//') {
sb[i] = String.fromCharCode(parseInt(ss.substring(p, p += 4), 16));
}
}
p += 2;
return sb.join('');
}
function unser_ref() {
p++;
var r = parseInt(ss.substring(p, p = ss.indexOf(';', p)));
p++;
return ht[r];
}
function __unserialize() {
switch (ss.charAt(p++)) {
case 'N': return ht[hv++] = unser_null();
case 'b': return ht[hv++] = unser_boolean();
case 'i': return ht[hv++] = unser_integer();
case 'd': return ht[hv++] = unser_double();
case 's': return ht[hv++] = unser_string();
case 'U': return ht[hv++] = unser_unicode_string();
case 'r': return ht[hv++] = unser_ref();
case 'a': return unser_array();
case 'O': return unser_object();
case 'C': return unser_custom_object();
case 'R': return unser_ref();
default: return false;
}
}
return __unserialize();
}

测试页面:http://test.coolcode.cn/phpserializer

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