Example 1
Copy code The code is as follows:
Header("Content-type: image/png"); /*Notify the browser that an image is to be output*/
$im = imagecreate(400, 300); /*Define the size of the image*/
$gray = ImageColorAllocate($im, 235, 235, 235);
$pink = ImageColorAllocate($im, 255, 128, 255);
$fontfile = "simkai.ttf";
/* $fontfile The path of the font, depending on the operating system, can be simhei.ttf (Helvetica), SIMKAI.TTF (Kaili), SIMFANG.TTF (Imitation Song Dynasty), SIMSUN.TTC (Song Dynasty & New Song Dynasty), etc. GD supports Chinese font*/
$str = iconv('GB2312','UTF-8','Chinese watermark'); /*Convert gb2312 character set to UTF-8 characters*/
ImageTTFText($im, 30 , 0, 100, 200, $pink , $fontfile , $str);
/* Add Chinese watermark*/
Imagepng($im);
ImageDestroy($im);
?>
Example 2
Copy code The code is as follows:
// *************************************** * //
// Function: add text to the picture
// Parameters: $img picture file name
// $new_img Save the picture file name, if it is empty, it means not to save the picture
// $text string content
// text_size string size
// text_angle font string output angle
// text_x string output x coordinate
// text_y string output y coordinate
// $text_font font file name
// $r,$g,$ b String color RGB value
// **************************************** / /
function img_text($img, $new_img, $text, $text_size, $text_angle, $text_x, $text_y, $text_font, $r, $g, $b){
$text=iconv("gb2312"," UTF-8",$text);
Header("Content-type: image/gif");
$im = @imagecreatefromstring(file_get_contents($img)) or die ("Failed to open image!");
$color = ImageColorAllocate($im, $r,$g,$b);
//ImageTTFText(int im, int size, int angle, int x, int y, int col, string fontfile, string text):
//This The function writes TTF (TrueType Fonts) font text into the image.
//Parameters: size is the size of the font;
// angle is the angle of the font, calculated clockwise, 0 degrees is horizontal (from left to right), 90 degrees is the text from bottom to top;
// The two parameters x and y are the coordinate values of the text (the origin is the upper left corner);
// col is the color of the text;
// fontfile is the name of the font file;
// text is the string content.
ImageTTFText($im, $text_size, $text_angle, $text_x, $text_y, $color, $text_font, $text);
if ($new_img==""):
ImageGif($im); // Do not save Picture, only displayed
else:
ImageGif($im,$new_img); // Save the picture, but not displayed
endif;
ImageDestroy($im); //End the graphic and release memory space
}
?>
Example 3
Copy code The code is as follows:
/*
* Function: PHP image watermark (watermark supports images or text)
* Parameters:
* $groundImage background image, that is, the image that needs to be watermarked, temporarily Only supports GIF, JPG, PNG formats;
* $waterPos watermark position, there are 10 states, 0 is a random position;
* 1 is top left, 2 is top center, 3 is top right;
* 4 is middle left , 5 means the middle is centered, 6 means the middle is right;
* 7 is bottom left, 8 is bottom center, 9 is bottom right;
* $waterImage image watermark, that is, the image used as the watermark, currently only supports GIF , JPG, PNG format;
* $waterText text watermark, that is, text is used as a watermark, supports ASCII code, does not support Chinese;
* $textFont text size, the value is 1, 2, 3, 4 or 5, the default is 5 ;
* $textColor text color, the value is a hexadecimal color value, the default is #FF0000 (red);
*
* Note: Support GD 2.0, Support FreeType, GIF Read, GIF Create, JPG, PNG
* $ It is best not to use waterImage and $waterText at the same time. Just choose one of them, and use $waterImage first.
* When $waterImage is valid, the parameters $waterString, $stringFont, and $stringColor are not valid.
* The file name of the watermarked image is the same as $groundImage.
* Author: longware @ 2004-11-3 14:15:13
*/
function imageWaterMark($groundImage,$waterPos=0,$waterImage=”",$waterText=””,$textFont=5,$textColor =”#FF0000″)
{
$isWaterImage = FALSE;
$formatMsg = “This file format is not supported yet. Please use image processing software to convert the image to GIF, JPG, or PNG format.”;
//Read watermark File
if(!emptyempty($waterImage) && file_exists($waterImage))
{
$isWaterImage = TRUE;
$water_info = getimagesize($waterImage);
$water_w = $water_info[0];//Get the watermark image The width
$water_h = $water_info[1];//Get the height of the watermark image
switch($water_info[2])//Get the format of the watermark image
{
case 1:$water_im = imagecreatefromgif($waterImage);break;
case 2:$water_im = imagecreatefromjpeg($waterImage);break;
case 3 :$water_im = imagecreatefrompng($waterImage);break;
default:die($formatMsg);
}
}
//Read the background image
if(!emptyempty($groundImage) && file_exists($groundImage))
{
$ground_info = getimagesize($groundImage);
$ground_w = $ground_info[0];//Get the width of the background image
$ground_h = $ground_info[1];//Get the height of the background image
switch($ground_info[ 2])//Get the format of the background image
{
case 1:$ground_im = imagecreatefromgif($groundImage);break;
case 2:$ground_im = imagecreatefromjpeg($groundImage);break;
case 3:$ground_im = imagecreatefrompng ($groundImage);break;
default:die($formatMsg);
}
}
else
{
die("The picture that needs to be watermarked does not exist!");
}
//Watermark position
if($ isWaterImage)//Image watermark
{
$w = $water_w;
$h = $water_h;
$label = "picture";
}
else//Text watermark
{
$temp = imagettfbbox(ceil($ textFont*5),0,”./cour.ttf”,$waterText);//Get the range of text using TrueType font
$w = $temp[2] - $temp[6];
$h = $ temp[3] - $temp[7];
unset($temp);
$label = "Text area";
}
if( ($ground_w<$w) || ($ground_h<$h) )
{
echo "The length or width of the image that needs to be watermarked is smaller than the watermark ".$label.", so 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 top left
$posX = 0;
$posY = 0;
break;
case 2://2 is top center
$posX = ($ ground_w - $w) / 2;
$posY = 0;
break;
case 3://3 is top right
$posX = $ground_w - $w;
$posY = 0;
break;
case 4 ://4 is the center on the left
$posX = 0;
$posY = ($ground_h - $h) / 2;
break;
case 5://5 is the middle on the center
$posX = ($ground_w - $w ) / 2;
$posY = ($ground_h - $h) / 2;
break;
case 6://6 is the middle right
$posX = $ground_w - $w;
$posY = ($ground_h - $h) / 2;
break;
case 7://7 means the bottom is on the left
$posX = 0;
$posY = $ground_h - $h;
break;
case 8://8 is the bottom is in the center
$posX = ($ground_w - $w) / 2;
$posY = $ground_h - $h;
break;
case 9://9 is 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) ; posY, 0, 0, $water_w,$water_h);//Copy the watermark to the target file
}
else//Text watermark
{
if( !emptyempty($textColor) && (strlen($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, $B));
}
//The image after generating the watermark
@unlink($groundImage);
switch($ground_info[2])//Get the format of the background image
{
case 1:imagegif($ground_im,$groundImage);break;
case 2:imagejpeg($ground_im,$ groundImage);break;
case 3:imagepng($ground_im,$groundImage);break;
default:die($errorMsg);
}
//Release memory
if(isset($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], $uploadfile))
{
echo “OK
”;
//文字水印
//imageWaterMark($uploadfile,5,”",”HTTP://www.lvye.info”,5,”#cccccc“);
//图片水印
$waterImage=”logo_ok1.gif”;//水印图片路径
imageWaterMark($uploadfile,9,$waterImage);
echo “”;
}
else
{
echo “Fail
”;
}
}
}
}
?>
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