PHP to add watermark and upload image watermark PHP class _php Tutorial

PHP tutorial for image watermark and upload image watermark PHP class

/*
* Function: PHP image watermark (watermark supports picture or text)
Parameters
* $groundImage background image, that is, need to add a watermark image, temporarily only support gif,jpg,png format;
* $waterPos watermark position, there are 10 kinds of states, 0 is a random position;
* 1 for the top left, 2 for the top center, 3 for the top right;
* 4 for the middle of the left, 5 for the Middle center, 6 for the middle right;
* 7 for the bottom of the left, 8 for the bottom center, 9 for the bottom of the right;
* $waterImage image watermark, that is, as a watermark image, temporarily only support gif,jpg,png format;
* $waterText text watermark, that is, the text as a watermark, support ASCII code, does not support Chinese;
* $textFont Text size, value 1, 2, 3, 4 or 5, default is 5;
* $textColor text color, value is hexadecimal color value, default is #ff0000 (red);
*
* Note: Support GD 2.0,support FreeType, gif Read, GIF Create, JPG, PNG
* $waterImage and $waterText best not to use at the same time, choose one of them, priority to use the $waterImage.
* When the $waterimage is valid, the parameters $waterstring, $stringFont, $stringColor are not effective.
* The watermark image has the same file name as the $groundImage.
* Author: longware @ 2004-11-3 14:15:13
*/
function Imagewatermark ($groundImage, $waterPos =0, $waterImage = "", $waterText = "", $textFont =5, $textColor = "#FF0000 ″)
{
$isWaterImage = FALSE;
$FORMATMSG = "Does not support this file format, please use the picture processing software to convert the picture to GIF, JPG, PNG format. ”;

Read Watermark File
if (!emptyempty ($waterImage) && file_exists ($waterImage))
{
$isWaterImage = TRUE;
$water _info = getimagesize ($waterImage);
$water _w = $water _info[0];//To obtain the width of the watermark picture
$water _h = $water _info[1];//To obtain a high watermark image

Switch ($water _info[2])//Get the format of the watermark picture
{
Case 1: $water _im = Imagecreatefromgif ($waterImage);
Case 2: $water _im = Imagecreatefromjpeg ($waterImage);
Case 3: $water _im = Imagecreatefrompng ($waterImage);
Default:die ($FORMATMSG);
}
}

Read background picture
if (!emptyempty ($groundImage) && file_exists ($groundImage))
{
$ground _info = getimagesize ($groundImage);
$ground _w = $ground _info[0];//Get the width of the background image
$ground _h = $ground _info[1];//get a high background picture

Switch ($ground _info[2])//Get the format of the background picture
{
Case 1: $ground _im = Imagecreatefromgif ($groundImage);
Case 2: $ground _im = Imagecreatefromjpeg ($groundImage);
Case 3: $ground _im = Imagecreatefrompng ($groundImage);
Default:die ($FORMATMSG);
}
}
Else
{
Die ("The picture that needs watermark does not exist!") ”);
}

Watermark Location
if ($isWaterImage)//Picture watermark
{
$w = $water _w;
$h = $water _h;
$label = "Picture";
}
else//text watermark
{
$temp = Imagettfbbox (Ceil ($textFont), 0, "./cour.ttf", $waterText);//Get the range of text that uses TrueType fonts
$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 picture that needs to be watermarked is more than a watermark". $label. " Still small, unable to generate watermark! ”;
Return
}
Switch ($waterPos)
{
Case 0://Random
$posX = rand (0, ($ground _w-$w));
$posY = rand (0, ($ground _h-$h));
Break
Case 1://1 for top left
$posX = 0;
$posY = 0;
Break
Case 2://2 centered on the top
$posX = ($ground _w-$w)/2;
$posY = 0;
Break
Case 3://3 for top right
$posX = $ground _w-$w;
$posY = 0;
Break
Case 4://4 for the middle left
$posX = 0;
$posY = ($ground _h-$h)/2;
Break
Case 5://5 centered in the middle
$posX = ($ground _w-$w)/2;
$posY = ($ground _h-$h)/2;
Break
Case 6://6 for the middle right
$posX = $ground _w-$w;
$posY = ($ground _h-$h)/2;
Break
Case 7://7 for Bottom left
$posX = 0;
$posY = $ground _h-$h;
Break
Case 8://8 centered at bottom
$posX = ($ground _w-$w)/2;
$posY = $ground _h-$h;
Break
Case 9://9 for bottom 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
}

To set the color blending mode of an image
Imagealphablending ($ground _im, true);

if ($isWaterImage)//Picture watermark
{
Imagecopy ($ground _im, $water _im, $posX, $posY, 0, 0, $water _w, $water _h);//copy watermark to target file
}
else//text watermark
{
if (!emptyempty ($textColor) && (strlen ($textColor) ==7))
{
$R = Hexdec (substr ($textColor,));
$G = Hexdec (substr ($textColor, 3,2));
$B = Hexdec (substr ($textColor, 5));
}
Else
{
Die ("Watermark text color format is not correct! ”);
}
Imagestring ($ground _im, $textFont, $posX, $posY, $waterText, Imagecolorallocate ($ground _im, $R, $G, $B));
}

Create a picture after a watermark
@unlink ($groundImage);
Switch ($ground _info[2])//Get the format of the background picture
{
Case 1:imagegif ($ground _im, $groundImage);
Case 2:imagejpeg ($ground _im, $groundImage);
Case 3:imagepng ($ground _im, $groundImage);
Default:die ($ERRORMSG);
}

Freeing memory
if (Isset ($water _info)) unset ($water _info);
if (Isset ($water _im)) Imagedestroy ($water _im);
unset ($ground _info);
Imagedestroy ($ground _im);
}
—————————————————————————————
$id =$_request[' id '];
$num = count ($_files[' userfile ' [' name ']);
Print_r ($_files[' userfile ');
Print_r ($_files[' userfile ' [' name ']);

Echo $num;
echo "
”;
if (Isset ($id)) {
for ($i =0; $i < $id; $i + +) {

if (Isset ($_files) &&!emptyempty ($_files[' userfile ']) && $_files[' userfile ' [' Size ']>0]
{
$uploadfile = "./". Time (). " _ ". $_files[' UserFile '][name][$i];
echo "
”;
Echo $uploadfile;
if (copy ($_files[' userfile ' [' tmp_name '] [$i], $uploadfile))
{
echo "OK
”;

Text watermark
Imagewatermark ($uploadfile, 5, "", "HTTP://www.lvye.info", 5, "#cccccc");

Image watermark
$waterImage = "logo_ok1.gif";//Watermark Picture Path
Imagewatermark ($uploadfile, 9, $waterImage);

echo "";
}
Else
{
echo "Fail
”;
}
}
}
}

?>

?>

The following code is a picture upload and upload images to add watermark

Parameter description:
$max _file_size: Upload file size limit, unit byte
$destination _folder: Upload file path
$watermark: Whether additional watermark (1 is watermark, the other is not watermark);
Instructions for use:
1. Remove the "Extension=php_gd2.dll" line in the php.ini file, because we need to use the GD library;
2. Change Extension_dir = to the directory where your Php_gd2.dll is located;
3. asp Tutorial ">http://www.knowsky.com/php.asp;
****************************************************/
Upload file Type list
$uptypes =array (
' Image/jpg ',
' Image/jpeg ',
' Image/png ',
' Image/pjpeg ',
' Image/gif ',
' Image/bmp ',
' Image/x-png '
);
$max _file_size=2000000; Upload file size limit, unit byte
$destination _folder= "uploadimg/"; Upload file path
$watermark = 1; Whether additional watermark (1 is watermark, the other is not watermark);
$watertype = 1; Watermark Type (1 for text, 2 for picture)
$waterposition = 1; The watermark position (1 is the lower left corner, 2 is the lower right corner, 3 is the upper left corner, 4 is the upper right corner, and 5 is centered);
$waterstring = "http://www.xplore.cn/"; Watermark String
$waterimg = "Xplore.gif"; Watermark Picture
$imgpreview = 1; Whether to generate a preview map (1 is generated, others are not generated);
$imgpreviewsize =1/2; Thumbnail scale
?>


<title>Zwell Picture Uploading Program</title>




if ($_server[' request_method '] = = ' POST ')
{
if (!is_uploaded_file ($_files["Upfile"][tmp_name]))
Whether the file exists
{
echo "Picture does not exist www.bkjia.com!";
Exit
}
$file = $_files["Upfile"];
if ($max _file_size < $file ["size"])
Check File size
{
echo "File too big!";
Exit
}
if (!in_array ($file ["type"], $uptypes))
Check file types
{
echo "file type does not match!". $file ["type"];
Exit
}
if (!file_exists ($destination _folder))
{
mkdir ($destination _folder);
}
$filename = $file ["Tmp_name"];
$image _size = getimagesize ($filename);
$pinfo =pathinfo ($file ["name"]);
$ftype = $pinfo [' extension '];
$destination = $destination _folder.time (). ".". $ftype;
if (file_exists ($destination) && $overwrite! = True)
{
echo "file with the same name already exists";
Exit
}
if (!move_uploaded_file ($filename, $destination))
{
echo "Error moving File";
Exit
}
$pinfo =pathinfo ($destination);
$fname = $pinfo [basename];
echo "has been successfully uploaded
File name: ". $destination _folder. $fname."
";
echo "width:". $image _size[0];
echo "Length:". $image _size[1];
echo "
Size: ". $file [" Size "]." bytes ";
if ($watermark ==1)
{
$iinfo =getimagesize ($destination, $iinfo);
$nimage =imagecreatetruecolor ($image _size[0], $image _size[1]);
$white =imagecolorallocate ($nimage, 255,255,255);
$black =imagecolorallocate ($nimage, 0,0,0);
$red =imagecolorallocate ($nimage, 255,0,0);
Imagefill ($nimage, 0,0, $white);
Switch ($iinfo [2])
{
Case 1:
$simage =imagecreatefromgif ($destination);
Break
Case 2:
$simage =imagecreatefromjpeg ($destination);
Break
Case 3:
$simage =imagecreatefrompng ($destination);
Break
Case 6:
$simage =imagecreatefromwbmp ($destination);
Break
Default
Die ("Unsupported file type");
Exit
}
Imagecopy ($nimage, $simage, 0,0,0,0, $image _size[0], $image _size[1]);
Imagefilledrectangle ($nimage, 1, $image _size[1]-15,80, $image _size[1], $white);
Switch ($watertype)
{
Case 1://Add watermark String
Imagestring ($nimage, 2,3, $image _size[1]-15, $waterstring, $black);
Break
Case 2://Add watermark Picture
$simage 1 =imagecreatefromgif ("Xplore.gif");
Imagecopy ($nimage, $simage 1,0,0,0,0,85,15);
Imagedestroy ($simage 1);
Break
}
Switch ($iinfo [2])
{
Case 1:
Imagegif ($nimage, $destination);
Imagejpeg ($nimage, $destination);
Break
Case 2:
Imagejpeg ($nimage, $destination);
Break
Case 3:
Imagepng ($nimage, $destination);
Break
Case 6:
Imagewbmp ($nimage, $destination);
Imagejpeg ($nimage, $destination);
Break
}
Overwrite the original upload file
Imagedestroy ($nimage);
Imagedestroy ($simage);
}
if ($imgpreview ==1)
{
echo "
Picture preview:
";
echo "echo" alt= "Picture preview: R filename:". $destination. " rwww.bkjia.com upload time: ">";
}
}
?>

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