Php watermark program

<? Php
Require_once ("../dbconnect. php ");
$ Proimagepath = "photo /";
$ Product_id = $ _ POST ["product_id"];
$ Product_pid = $ _ POST ["product_pid"];
$ Product_title = $ _ POST ["product_title"];
$ Product_name = $ _ POST ["product_name"];
$ Product_xinghao =$ _ POST ["product_xinghao"];
$ Product_yongtu =$ _ POST ["product_yongtu"];
$ Product_danjia = $ _ POST ["product_danjia"];
$ Product_content = mysql_escape_string ($ _ POST ["content1"]);
$ Product_date = date ("YmdHis ");
$ Product_smallid = $ _ POST ["product_catename"];
$ Product_img = $ _ FILES ["smallimage"];
$ Smalltype = $ product_img ["type"];
//// Data verification ////////////////
If ($ product_name = "")
{
Alert_back ("the product name cannot be blank! ");
Exit;
}
If (! $ Smalltype = getImgType ($ smalltype ))
{
Alert_back ("the uploaded image type is incorrect! ");
Exit;
}
///////// Upload the image /////////////////
$ Smallimgname = $ product_smallid. $ product_date. ".". $ smalltype;
$ Smallimgpath = $ proimagepath. $ smallimgname;
If (! Move_uploaded_file ($ product_img ["tmp_name"], ".../". $ smallimgpath ))
{
Alert_back ("image Upload failed! ");
Exit;
}

///////// Add data to the database ///////////////
$ InsertSQL = "insert into product (product_title, product_name, product_xinghao, product_yongtu, product_danjia, product_img, product_content, product_date, product_smallid, product_pid) values
('$ Product_title', '$ product_name', '$ product_xinghao', '$ product_yongtu', '$ product_danjia', '$ smallimgpath', '$ product_content ', '$ product_date', '$ product_smallid', '$ product_pid ')";
Mysql_query ("set names 'gb2312 '");
// Echo ($ insertSQL );
If (mysql_query ($ insertSQL ))
{
Alert_back ("product added! ");
}
Else
{
Alert_back ("failed to add product! ");
}
?>


Watermark code found on the Internet:
/*
* Function: PHP image watermark (watermarks support images or text)
* Parameters:
* $ Product_img: specifies the background image to be Watermark. Currently, only the GIF, JPG, and PNG formats are supported;
* $ WaterPos watermark position, which has 10 statuses. 0 indicates a random position;
* 1 is the top left, 2 is the top center, and 3 is the top right;
* 4: center left, 5: center, and 6: center right;
* 7 indicates that the bottom is left, 8 indicates that the bottom is center, and 9 indicates that the bottom is right;
* $ WaterImage: specifies the image Watermark. Currently, only the GIF, JPG, and PNG formats are supported;
* $ WaterText text watermark: uses text as a watermark. It supports ASCII codes and does not support Chinese characters;
* $ TextFont text size. The value is 1, 2, 3, 4, or 5. The default value is 5;
* $ TextColor text color. The value is a hexadecimal color value. The default value is # FF0000 (red );
*
* Note: Support GD 2.0, Support FreeType, GIF Read, GIF Create, JPG, and PNG
* $ WaterImage and $ waterText should not be used at the same time. Select one of them and use $ waterImage first.
* When $ waterImage is valid, $ waterString, $ stringFont, and $ stringColor are invalid.
* The name of the watermark image is the same as that of $ product_img.
* Author: longware @ 2004-11-3 14:15:13
*/
Function imageWaterMark ($ product_img, $ waterPos = 0, $ waterImage = "", $ waterText = "", $ textFont = 5, $ textColor = "# FF0000 ")
{
$ IsWaterImage = FALSE;
$ FormatMsg = "this file format is not supported Currently. Use image processing software to convert images to GIF, JPG, and PNG formats. ";
// Read the watermark file
If (! Empty ($ waterImage) & file_exists ($ waterImage ))
    {
$ IsWaterImage = TRUE;
$ Water_info = getimagesize ($ waterImage );
$ Water_w = $ water_info [0]; // Obtain the watermark image width.
$ Water_h = $ water_info [1]; // Get the watermark image height
Switch ($ water_info [2]) // Obtain the watermark image format
        {
Case 1water_im = imagecreatefromgif ($ waterImage); break;
Case 2water_im = imagecreatefromjpeg ($ waterImage); break;
Case 3water_im = imagecreatefrompng ($ waterImage); break;
Default: die ($ formatMsg );
        }
    }
// Read the background image
If (! Empty ($ product_img) & file_exists ($ product_img ))
    {
$ Ground_info = getimagesize ($ product_img );
$ Ground_w = $ ground_info [0]; // Obtain the width of the background image.
$ Ground_h = $ ground_info [1]; // get the height of the background image
Switch ($ ground_info [2]) // Obtain the background image format
        {
Case 1: $ ground_im = imagecreatefromgif ($ product_img); break;
Case 2: $ ground_im = imagecreatefromjpeg ($ product_img); break;
Case 3: $ ground_im = imagecreatefrompng ($ product_img); break;
Default: die ($ formatMsg );
        }
    }
Else
    {
Die ("the image to be watermarked does not exist! ");
    }
// Watermark Position
If ($ isWaterImage) // image watermark
    {
$ W = $ water_w;
$ H = $ water_h;
$ Label = "image ";
    }
Else // text watermark
    {
$ Temp = imagettfbbox (ceil ($ textFont * 2.5), 0, "arial. ttf", $ waterText); // get the text range using the TrueType font
$ W = $ temp [2]-$ temp [6];
$ H = $ temp [3]-$ temp [7];
Unset ($ temp );
$ Label = "text area ";
    }
If ($ ground_w <$ w) | ($ ground_h <$ h ))
    {
Echo "the length or width of the image to be watermark is smaller than that of the watermark". $ label. ". The Watermark cannot be generated! ";
Return;
    }
Switch ($ waterPos)
    {
Case 0: // random
$ PosX = rand (0, ($ ground_w-$ w ));
$ PosY = rand (0, ($ ground_h-$ h ));
Break;
Case 1: // 1 is the top left
$ PosX = 0;
$ PosY = 0;
Break;
Case 2: // 2 center the top
$ PosX = ($ ground_w-$ w)/2;
$ PosY = 0;
Break;
Case 3: // 3: top right
$ PosX = $ ground_w-$ w;
$ PosY = 0;
Break;
Case 4: // 4 is left in the middle
$ PosX = 0;
$ PosY = ($ ground_h-$ h)/2;
Break;
Case 5: // 5 center in the middle
$ PosX = ($ ground_w-$ w)/2;
$ PosY = ($ ground_h-$ h)/2;
Break;
Case 6: // 6 is the center and right
$ PosX = $ ground_w-$ w;
$ PosY = ($ ground_h-$ h)/2;
Break;
Case 7: // 7 is left at the bottom
$ PosX = 0;
$ PosY = $ ground_h-$ h;
Break;
Case 8: // 8 is centered at the bottom
$ PosX = ($ ground_w-$ w)/2;
$ PosY = $ ground_h-$ h;
Break;
Case 9: // 9: right
$ PosX = $ ground_w-$ w;
$ PosY = $ ground_h-$ h;
Break;
Default: // random
$ PosX = rand (0, ($ ground_w-$ w ));
$ PosY = rand (0, ($ ground_h-$ h ));
Break;
    }
// Set the mixed color mode of the image
Imagealphablending ($ ground_im, true );
If ($ isWaterImage) // image watermark
    {
Imagecopy ($ ground_im, $ water_im, $ posX, $ posY, 0, 0, $ water_w, $ water_h); // Copy the watermark to the target file
    }
Else // text watermark
    {
If (! Empty ($ textColor) & (strlen ($ textColor) = 7 ))
        {
$ R = hexdec (substr ($ textColor, 1, 2 ));
$ G = hexdec (substr ($ textColor, 3, 2 ));
$ B = hexdec (substr ($ textColor, 5 ));
        }
Else
        {
Die ("the watermark text color format is incorrect! ");
        }
Imagestring ($ ground_im, $ textFont, $ posX, $ posY, $ waterText, imagecolorallocate ($ ground_im, $ R, $ G, $ B ));
    }
// The image after the watermark is generated
@ Unlink ($ product_img );
Switch ($ ground_info [2]) // Obtain the background image format
    {
Case 1: imagegif ($ ground_im, $ product_img); break;
Case 2: imagejpeg ($ ground_im, $ product_img); break;
Case 3: imagepng ($ ground_im, $ product_img); break;
Default: die ($ errorMsg );
    }
// Release the memory
If (isset ($ water_info) unset ($ water_info );
If (isset ($ water_im) imagedestroy ($ water_im );
Unset ($ ground_info );
Imagedestroy ($ ground_im );
}

// Configure //---------------------------------------------------------------------------------------
If (isset ($ _ FILES )&&! Empty ($ _ FILES ['userfile']) & $ _ FILES ['userfile'] ['size']> 0)
{
$ Uploadfile = "./". time (). "_". $ _ FILES ['userfile'] ['name'];
If (copy ($ _ FILES ['userfile'] ['tmp _ name'], $ uploadfile ))
    {
Echo "OK <br> ";
// Text watermark
ImageWaterMark ($ uploadfile, 0, "", "http://www.hi-pwr.com", 5, "# FF0000 ");
// Image watermark
// $ WaterImage = "images/bz.gif"; // watermark image path
// ImageWaterMark ($ uploadfile, 0, $ waterImage );
Echo " ";
    }
Else
    {
Echo "Fail <br> ";
    }
}