// JavaScript Document
function PHP_Unserialize(input)
{
		var result = PHP_Unserialize_(input);
		return result[0];
}


/**
* Function which performs the actual unserializing
*
* @param string input Input to parse
*/
function PHP_Unserialize_(input)
{
		var length = 0;
		
		switch (input.charAt(0)) {
				/**
				* Array
				*/
				case 'a':
						length = PHP_Unserialize_GetLength(input);
						input  = input.substr(String(length).length + 4);

						var arr   = new Array();
						var key   = null;
						var value = null;

						for (var i=0; i<length; ++i) {
								key   = PHP_Unserialize_(input);
								input = key[1];

								value = PHP_Unserialize_(input);
								input = value[1];

								arr[key[0]] = value[0];
						}

						input = input.substr(1);
						return [arr, input];
						break;
				
				/**
				* Objects
				*/
				case 'O':
						length = PHP_Unserialize_GetLength(input);
						var classname = String(input.substr(String(length).length + 4, length));
						
						input  = input.substr(String(length).length + 6 + length);
						var numProperties = Number(input.substring(0, input.indexOf(':')))
						input = input.substr(String(numProperties).length + 2);

						var obj      = new Object();
						var property = null;
						var value    = null;

						for (var i=0; i<numProperties; ++i) {
								key   = PHP_Unserialize_(input);
								input = key[1];
								
								// Handle private/protected
								key[0] = key[0].replace(new RegExp('^\x00' + classname + '\x00'), '');
								key[0] = key[0].replace(new RegExp('^\x00\\*\x00'), '');

								value = PHP_Unserialize_(input);
								input = value[1];

								obj[key[0]] = value[0];
						}

						input = input.substr(1);
						return [obj, input];
						break;

				/**
				* Strings
				*/
				case 's':
						length = PHP_Unserialize_GetLength(input);
						return [String(input.substr(String(length).length + 4, length)), input.substr(String(length).length + 6 + length)];
						break;

				/**
				* Integers and doubles
				*/
				case 'i':
				case 'd':
						var num = Number(input.substring(2, input.indexOf(';')));
						return [num, input.substr(String(num).length + 3)];
						break;
				
				/**
				* Booleans
				*/
				case 'b':
						var bool = (input.substr(2, 1) == 1);
						return [bool, input.substr(4)];
						break;
				
				/**
				* Null
				*/
				case 'N':
						return [null, input.substr(2)];
						break;

				/**
				* Unsupported
				*/
				case 'o':
				case 'r':
				case 'C':
				case 'R':
				case 'U':
						alert('Error: Unsupported PHP data type found!');

				/**
				* Error
				*/
				default:
						return [null, null];
						break;
		}
}


/**
* Returns length of strings/arrays etc
*
* @param string input Input to parse
*/
function PHP_Unserialize_GetLength(input)
{
		input = input.substring(2);
		var length = Number(input.substr(0, input.indexOf(':')));
		return length;
}