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$ Admin_pw = "admin"; // manage the password
$ Uploaddir = "upload"; // upload Directory
Session_start ();
If ($ _ GET ['action'] = "getcode ")
{
Setcode ();
Exit ();
}
If ($ _ POST ['password'] = $ admin_pw & $ _ POST ['yz'] = $ _ SESSION ['yzcode'])
{
$ _ SESSION ['logined'] = $ admin_pw;
}
If ($ _ GET ['action'] = "logout ")
{
$ _ SESSION ['logined'] = "";
Header ("location:". $ _ SERVER ['php _ SELF ']);
Exit ();
}
If ($ _ SESSION ['logined']! = $ Admin_pw)
{
?>
Please log on
}
Else
{
?>
File Upload
If ($ _ POST ['AC'] = "upload ")
{
$ Fileall = explode ('.', $ _ FILES ['file'] ['name']);
$ Filetype = $ fileall [count ($ fileall)-1];
$ Filename = $ uploaddir. "/". $ _ FILES ['file'] ['name']. "_". rand (1,99999999999). ".". $ filetype;
$ Fileexists = file_exists ($ filename );
While ($ fileexists = true)
{
$ Filename = $ uploaddir. "/". $ _ FILES ['file'] ['name']. "_". rand (1,99999999999). ".". $ filetype;
$ Fileexists = file_exists ($ filename );
}
If (move_uploaded_file ($ _ FILES ["file"] ["tmp_name"], $ filename ))
{
$ Url = "http: //". $ _ SERVER ['server _ name']. $ _ SERVER ['request _ URI '];
Echo "File:". $ filename. "uploaded successfully!
File address:Test ";
}
Else
{
Echo "file". $ filename. "Upload failed! ";
}
}
?>
Log out
}
Function setcode ()
{
Header ("Content-type: image/gif ");
$ Border = 0; // whether the border is required; 1: 0: not required
$ How = 4; // Number of digits of the verification code
$ W = $ how * 15; // image width
$ H = 20; // Image height
$ Fontsize = 5; // font size
$ Alpha = "abcdefghijkmnopqrstuvwxyz"; // verification code content 1: letter
$ Number = "0123456789"; // verification code content 2: number
$ Randcode = ""; // verification code string initialization
Srand (double) microtime () * 1000000); // initialize the random number seed
$ Im = ImageCreate ($ w, $ h); // Create a verification image
$ Bgcolor = ImageColorAllocate ($ im, 255,255,255); // you can specify the background color.
ImageFill ($ im, 0, 0, $ bgcolor); // fill the background color
If ($ border)
{
$ Black = ImageColorAllocate ($ im, 0, 0, 0); // you can specify the border color.
ImageRectangle ($ im, 0, 0, $ W-1, $ H-1, $ black); // draw a border
}
For ($ I = 0; $ I <$ how; $ I ++)
{
$ Alpha_or_number = mt_rand (0, 1); // letters or numbers
$ Str = $ alpha_or_number? $ Alpha: $ number;
$ Which = mt_rand (0, strlen ($ str)-1); // specify the character
$ Code = substr ($ str, $ which, 1); // Obtain the character
$ J =! $ I? 4: $ j + 15; // specifies the position of the painted character.
$ Color3 = ImageColorAllocate ($ im, mt_rand (0,100), mt_rand (0,100), mt_rand (0,100); // character color
ImageChar ($ im, $ fontsize, $ j, 3, $ code, $ color3); // draw characters
$ Randcode. = $ code; // add a verification code string to a bit by bit
}
$ _ SESSION ['yzcode'] = $ randcode;
Imagegif ($ im );
ImageDestroy ($ im );
}
?>
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