PHP Cookies: How to Set Cookies & Get Cookies

Cookies don’t have to be an essential part of a website but can provide some of the “little things” that can set your website apart from the rest. Cookies are small tidbits of information that you save on the client’s computer so that you can access them next time they visit the website. Session ID’s are also usually held in cookies.

So what are the most popular uses of cookies? They are:

• To store username/password information so that the user doesn’t have to log in every time they visit the website (”remember me” sign ins).


• To simply remember the user’s name.


• To keep track of a user’s progress during a specified process.


• To remember a user’s theme.

Easier way to manage your ASP.NET Cache

Was recently told by a client of mine that the ASP.NET app I developed was WAY TOO SLOW! I had to agree; the site was pinging the database twice on every load of the home page. So I said, "Give me a week... I'll make it work better". I went home feeling bad... my app was slow and I really didn't know where to begin. I had a lot of code that depended on pinging the database and I didn't want to sift through it all. What I ended up doing was using the cache object.

I started to look at other open source projects and their approaches to caching. Than DotNetKicks' cache manager caught my eye! I went off that idea and created my own way of implementing an object to interface with the cache object, making it more manageable.

The Cache manager I wrote has 3 methods (Grab, insert, clear), a constructor and 2 properties (CacheKey, CacheDuration). So here's my code in VB and C#:

Setting up a Subversion Server under Windows

A) Download SubversionYou'll need the latest version of..

• the Windows binaries


• the "run Subversion as a windows service" wrapper


• the TortoiseSVN shell integration utility

B) Install Subversion

1. Unzip the Windows binaries to a folder of your choice. I chose c:\program files\subversion\ as my path.


2. Now, add the subversion binaries to the path environment variable for the machine. I used %programfiles%\subversion\bin\
   


3. You'll also need another environment variable, SVN_EDITOR, set to the text editor of your choice. I used c:\windows\notepad.exe
   

C) Create a Repository

1. Open a command prompt and type
   

   svnadmin create "c:\Documents and Settings\Subversion Repository"

   
   


2. Navigate to the folder we just created. Within that folder, uncomment the following lines in the /conf/svnserve.conf file:
   

   [general]
   anon-access = read
   auth-access = write
   password-db = passwd

   
   Next, uncomment these lines in the /conf/passwd file:
   

   [users]
   harry = harryssecret
   sally = sallyssecret

   
   

D) Verify that everything is working

1. Start the subversion server by issuing this command in the command window:
   

   svnserve --daemon --root "C:\Documents and Settings\Subversion Repository"

   
   


2. Create a project by opening a second command window and entering this command:
   

   svn mkdir svn://localhost/myproject

   
   It's a standard Subversion convention to have three folders at the root of a project:
   

   /trunk
   /branches
   /tags

   
   


3. At this point, Notepad should launch:Enter any comment you want at the top of the file, then save and exit.


4. You'll now be prompted for credentials. In my case I was prompted for the administrator credentials as well:
   

   Authentication realm:  0f1a8b11-d50b-344d-9dc7-0d9ba12e22df
   Password for 'Administrator': *********
   Authentication realm:  0f1a8b11-d50b-344d-9dc7-0d9ba12e22df
   Username: sally
   Password for 'sally': ************
   
   Committed revision 1.

   
   Congratulations! You just checked a change into Subversion!

E) Start the server as a service

1. Stop the existing command window that's running svnserve by pressing CTRL+C.


2. Copy the file SVNService.exe from the zip file of the same name to the subversion\bin folder.


3. Install the service by issuing the following commands:
   

   svnservice -install --daemon --root "C:\Documents and Settings\Subversion Repository"
   sc config svnservice start= auto
   net start svnservice

   
   


4. Test the new service by listing all the files in the repository:
   

   svn ls svn://localhost/

   
   You should see the single project we created earlier, myproject/

F) Set up the shell extension

1. Run the TortoiseSVN installer. It will tell you to restart, but you don't need to.


2. Create a project folder somewhere on your hard drive. Right click in that folder and select "SVN Checkout..."type svn://localhost/myproject/ for the repository URL and click OK.
   
   


3. Create a new file in that directory. Right click the file and select "TortoiseSVN, Add"


4. The file hasn't actually been checked in yet. Subversion batches any changes and commits them as one atomic operation. To send all your changes to the server, right click and select "SVN Commit":

And we're done! You now have a networked Subversion server and client set up on your machine. Note that the default port for svnserve is 3690.

For more tips on using subversion, take a look at the free O'Reilly Subversion book.

Javascript: Print preview window

I would like to create a print preview window that will display only the main content of the page that a person would really want to print. It can work fine on IE and Firefox..You can test other browser. :D

Print this stuff.

Print Preview

Don't forget create print.htm within blank content.

Thanks

CongNguyen

Encrypt/Decrypt string VB.Net

Imports System.Security.Cryptography

Encryption Coding Is:

/*
* [strText]: string is that you need to encrypt
*[strEncrKey]: is the key to decrypt the string that has encryption

*/

Private Shared Function Encrypt(ByVal strText As String, ByVal strEncrKey As String) As String
Dim IV() As Byte = {&H12, &H34, &H56, &H78, &H90, &HAB, &HCD, &HEF}
Try
Dim bykey() As Byte = System.Text.Encoding.UTF8.GetBytes(Left(strEncrKey, 8))
Dim InputByteArray() As Byte = System.Text.Encoding.UTF8.GetBytes(strText)
Dim des As New DESCryptoServiceProvider
Dim ms As New MemoryStream
Dim cs As New CryptoStream(ms, des.CreateEncryptor(bykey, IV), CryptoStreamMode.Write)
cs.Write(InputByteArray, 0, InputByteArray.Length)
cs.FlushFinalBlock()
Return Convert.ToBase64String(ms.ToArray())
Catch ex As Exception
Return ex.Message
End Try
End Function

Decryption Code Is:
/*
* [strText]: a string that has been encrypt with the above method
*[sDecrKey]: string is the key needed to decrypt
*/
Private Shared Function Decrypt(ByVal strText As String, ByVal sDecrKey As String) As String
Dim IV() As Byte = {&H12, &H34, &H56, &H78, &H90, &HAB, &HCD, &HEF}
Dim inputByteArray(strText.Length) As Byte
Try
Dim byKey() As Byte = System.Text.Encoding.UTF8.GetBytes(Left(sDecrKey, 8))
Dim des As New DESCryptoServiceProvider
inputByteArray = Convert.FromBase64String(strText)
Dim ms As New MemoryStream
Dim cs As New CryptoStream(ms, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write)
cs.Write(inputByteArray, 0, inputByteArray.Length)
cs.FlushFinalBlock()
Dim encoding As System.Text.Encoding = System.Text.Encoding.UTF8
Return encoding.GetString(ms.ToArray())
Catch ex As Exception
Return ex.Message
End Try
End Function

Call Function:
Return Encrypt("string is that you need to encrypt", "abc123")
Return Decrypt("string that has been encrypt with the above method
", "abc123")