晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Current File : /home/akaindir/www/crm/include/Webservices/PreserveGlobal.php
<?php
/*+***********************************************************************************
 * The contents of this file are subject to the vtiger CRM Public License Version 1.0
 * ("License"); You may not use this file except in compliance with the License
 * The Original Code is:  vtiger CRM Open Source
 * The Initial Developer of the Original Code is vtiger.
 * Portions created by vtiger are Copyright (C) vtiger.
 * All Rights Reserved.
 *************************************************************************************/

class VTWS_PreserveGlobal{
	
	private static $globalData = array();
	
	static function preserveGlobal($name,$value){
		//$name store the name of the global.
		global $$name;
		//To not push null value . Ideally we should not push null value for any name
		//But current user null is dangerous so we are checking for only current user
        if(!empty($$name) || $name != 'current_user') {
			if(!is_array(VTWS_PreserveGlobal::$globalData[$name])){
				VTWS_PreserveGlobal::$globalData[$name] = array();		
			}
			
			VTWS_PreserveGlobal::$globalData[$name][] = $$name;
		}

		$$name = $value;
		return $$name;
	}
	
	static function restore($name){
		//$name store the name of the global.
		global $$name;
		
		if(is_array(VTWS_PreserveGlobal::$globalData[$name]) && count(VTWS_PreserveGlobal::$globalData[$name]) > 0){
			$$name = array_pop(VTWS_PreserveGlobal::$globalData[$name]);
		}
		$$name;
	}
	
	static function getGlobal($name){
		global $$name;
		return VTWS_PreserveGlobal::preserveGlobal($name,$$name);
	}
	
	static function flush(){
		foreach (VTWS_PreserveGlobal::$globalData as $name => $detail) {
			//$name store the name of the global.
			global $$name;
			if(is_array(VTWS_PreserveGlobal::$globalData[$name]) && count(VTWS_PreserveGlobal::$globalData[$name]) > 0) {
				$$name = array_pop(VTWS_PreserveGlobal::$globalData[$name]);
			}
		}
	}
	
}

?>

haha - 2025