Php reads the phone number in the database and generates an image.

The function of this PHP program is to read the mobile phone number or other data from the database and generate images, which can interfere with the collection and prevention function. (English or numbers. if you want to support Chinese characters, you need to add a font ). This code is original code. The following code is used:
The code is as follows:
$ Id = $ _ GET [id];
Include ("admin/config. php ");
$ SQL = "select * from user where id = $ id ";
$ Data = mysql_fetch_array (mysql_query ($ SQL ));
$ P = SBC_DBC ($ data [Phone], 1 );
Function get_str ($ str, $ strlen = 16 ){
$ Str = stripslashes ($ str );
For ($ I = 0; $ I <$ strlen; $ I ++)
If (ord (substr ($ str, $ I, 1)> 0xa0) $ j ++;
If ($ j % 2! = 0) $ strlen ++;
$ Tmp_str = substr ($ str, 0, $ strlen );
Return $ tmp_str;
}
If ($ p <> ''){
// Generate a 5-digit digital image
Header ("Content-type: image/png"); // tell the browser that the following data is an image instead of text

// Define the image width and height
$ Nwidth = 120;
$ Nheight = 25;
$ Im = @ imagecreate ($ nwidth, $ nheight) or die ("Can't initialize new GD image stream"); // create an image

// Set the image color
$ Background_color = imagecolorallocate ($ im, 255,255,255); // match the color
$ Text_color = imagecolorallocate ($ im, 23, 14, 91 );

// Draw the image border
Imagefilledrectangle ($ im, $ nwidth-1, $ nheight-1, $ background); // rectangular area coloring
Imagerectangle ($ im, $ nwidth-1, $ nheight-1, $ background_color); // draw a rectangle

// Srand (double) microtime () * 1000000); // obtain the value of one second in the current time to one second in the execution time.
// $ Randval = rand ();
$ Randval = $ p; // 5-digit
Imagestring ($ im, 8, 10, 2, $ randval, $ text_color); // draw a horizontal string


// Add interference factors
// For ($ I = 0; $ I <478; $ I ++)
//{
// $ Randcolor = imagecolorallocate ($ im, rand (0,255), rand (0,255), rand (0,255 ));
// Imagesetpixel ($ im, rand () % 100, rand () % 30, $ randcolor); // point
/