谁能帮忙解密一个文件内容么？谢谢啦

文件名为：Service.php
找了很多方法都没有解密成功，特到此来求援。谢谢

$o="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";eval(base64_decode("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"));return;?>

回复讨论(解决方案)

<?phpsession_start();//error_reporting(0);include "Include/Global.php";$Act=$_GET['Act'];function iconv_($str){return iconv("UTF-8","GBK",$str);}switch($Act){	case "Login":		$Name=iconv_($db->fhtml(trim($_POST['Name'])));		$PassWord=iconv_($db->fhtml($_POST['PassWord']));		$RoomId=iconv_($db->fhtml($_POST['RoomId']));		$UserSex=$_POST['UserSex']=='true'?'0':'1';		Login($Name,$PassWord,$UserSex,$RoomId);	break;	case "ListOnLineUser":		ListOnLineUser($db->fhtml($_GET['RoomId']));	break;	case "KeepLine":		$ChatId	=$db->fhtml($_GET['ChatId']);		$UsersOrder	=$db->fhtml($_GET['UsersOrder']);		KeepLine($ChatId,$UsersOrder);	break;	case "SetColor":		$ChatId	=$db->fhtml($_GET['ChatId']);		$Color	=$db->fhtml($_GET['Color']);		SetColor($ChatId,$Color);	break;	case "GetColor":		$ChatId	=$db->fhtml($_GET['ChatId']);		GetColor($ChatId);	break;	case "SendMSG":		$MsgId=$db->fhtml($_POST['MsgId']);		$FontWeight=iconv_($db->fhtml($_POST['FontWeight']));		$IsPublic=$db->fhtml($_POST['IsPublic']);		$FromChatId=$db->fhtml($_POST['FromChatId']);		$ToChatId=$db->fhtml($_POST['ToChatId']);		$ExpWord=iconv_($db->fhtml($_POST['ExpWord']));		$Content=iconv_($db->fhtml(trim($_POST['Content'])));		SendMSG($MsgId,$FontWeight,$IsPublic,$FromChatId,$ToChatId,$ExpWord,$Content);	break;	case "GetMSG":		$ChatId		=$db->fhtml($_GET['ChatId']);		$MsgId		=$db->fhtml($_GET['MsgId']);		GetMSG($ChatId,$MsgId);	break;	case "EditName":		$Name=$db->fhtml($_POST['Name']);		EditName(trim($Name));	break;	case "RegId":		$Name=$db->fhtml($_POST['UserName']);		$Pwd=$db->fhtml($_POST['Pwd']);		$Sex=$db->fhtml($_POST['UserSex']);		$Age=$db->fhtml($_POST['Age']);		if($db->sqlnum($db->query("select * from chat_user where UserName='$Name'"))>0)		exit("<script>alert('?????????????');</script>");		RegId($Name,$Pwd,$Sex,$Age);		exit("<script>alert('??????');</script>");	break;	case "ExitChat":		ExitChat();	break;}?>

多谢，先试试看，可否告知破解方法或者软件。

<?phpsession_start();//error_reporting(0);include "Include/Global.php";$Act=$_GET['Act'];function iconv_($str){return iconv("UTF-8","GBK",$str);}switch($Act){	case "Login":		$Name=iconv_($db->fhtml(trim($_POST['Name'])));		$PassWord=iconv_($db->fhtml($_POST['PassWord']));		$RoomId=iconv_($db->fhtml($_POST['RoomId']));		$UserSex=$_POST['UserSex']=='true'?'0':'1';		Login($Name,$PassWord,$UserSex,$RoomId);	break;	case "ListOnLineUser":		ListOnLineUser($db->fhtml($_GET['RoomId']));	break;	case "KeepLine":		$ChatId	=$db->fhtml($_GET['ChatId']);		$UsersOrder	=$db->fhtml($_GET['UsersOrder']);		KeepLine($ChatId,$UsersOrder);	break;	case "SetColor":		$ChatId	=$db->fhtml($_GET['ChatId']);		$Color	=$db->fhtml($_GET['Color']);		SetColor($ChatId,$Color);	break;	case "GetColor":		$ChatId	=$db->fhtml($_GET['ChatId']);		GetColor($ChatId);	break;	case "SendMSG":		$MsgId=$db->fhtml($_POST['MsgId']);		$FontWeight=iconv_($db->fhtml($_POST['FontWeight']));		$IsPublic=$db->fhtml($_POST['IsPublic']);		$FromChatId=$db->fhtml($_POST['FromChatId']);		$ToChatId=$db->fhtml($_POST['ToChatId']);		$ExpWord=iconv_($db->fhtml($_POST['ExpWord']));		$Content=iconv_($db->fhtml(trim($_POST['Content'])));		SendMSG($MsgId,$FontWeight,$IsPublic,$FromChatId,$ToChatId,$ExpWord,$Content);	break;	case "GetMSG":		$ChatId		=$db->fhtml($_GET['ChatId']);		$MsgId		=$db->fhtml($_GET['MsgId']);		GetMSG($ChatId,$MsgId);	break;	case "EditName":		$Name=$db->fhtml($_POST['Name']);		EditName(trim($Name));	break;	case "RegId":		$Name=$db->fhtml($_POST['UserName']);		$Pwd=$db->fhtml($_POST['Pwd']);		$Sex=$db->fhtml($_POST['UserSex']);		$Age=$db->fhtml($_POST['Age']);		if($db->sqlnum($db->query("select * from chat_user where UserName='$Name'"))>0)		exit("<script>alert('?????????????');</script>");		RegId($Name,$Pwd,$Sex,$Age);		exit("<script>alert('??????');</script>");	break;	case "ExitChat":		ExitChat();	break;}?>