<?php /* * 功能：PHP图片水印 (水印支持图片或文字) * 参数： * $groundImage 背景图片，即需要加水印的图片，暂只支持GIF,JPG,PNG格式； * $waterPos 水印位置，有10种状态，0为随机位置； * 1为顶端居左，2为顶端居中，3为顶端居右； * 4为中部居左，5为中部居中，6为中部居右； * 7为底端居左，8为底端居中，9为底端居右； * $waterImage 图片水印，即作为水印的图片，暂只支持GIF,JPG,PNG格式； * $waterText 文字水印，即把文字作为为水印，支持ASCII码，不支持中文； * $textFont 文字大小，值为1、2、3、4或5，默认为5； * $textColor 文字颜色，值为十六进制颜色值，默认为#FF0000(红色)； * * 注意：Support GD 2.0，Support FreeType、GIF Read、GIF Create、JPG 、PNG * $waterImage 和 $waterText 最好不要同时使用，选其中之一即可，优先使用 $waterImage。 * 当$waterImage有效时，参数$waterString、$stringFont、$stringColor均不生效。 * 加水印后的图片的文件名和 $groundImage 一样。 * 作者：longware @ 2004-11-3 14:15:13 */function imageWaterMark ( $groundImage , $waterPos = 0 , $waterImage = "" , $waterText = "" , $textFont = 5 , $textColor = "#FF0000" ){ $isWaterImage = FALSE ; $formatMsg = "暂不支持该文件格式，请用图片处理软件将图片转换为GIF、JPG、PNG格式。" ; //读取水印文件 if(!empty( $waterImage ) && file_exists ( $waterImage )) { $isWaterImage = TRUE ; $water_info = getimagesize ( $waterImage ); $water_w = $water_info [ 0 ]; //取得水印图片的宽 $water_h = $water_info [ 1 ]; //取得水印图片的高 switch( $water_info [ 2 ]) //取得水印图片的格式 { case 1 : $water_im = imagecreatefromgif ( $waterImage );break; case 2 : $water_im = imagecreatefromjpeg ( $waterImage );break; case 3 : $water_im = imagecreatefrompng ( $waterImage );break; default:die( $formatMsg ); } } //读取背景图片 if(!empty( $groundImage ) && file_exists ( $groundImage )) { $ground_info = getimagesize ( $groundImage ); $ground_w = $ground_info [ 0 ]; //取得背景图片的宽 $ground_h = $ground_info [ 1 ]; //取得背景图片的高 switch( $ground_info [ 2 ]) //取得背景图片的格式 { 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( "需要加水印的图片不存在！" ); } //水印位置 if( $isWaterImage ) //图片水印 { $w = $water_w ; $h = $water_h ; $label = "图片的" ; } else //文字水印 { $temp = imagettfbbox ( ceil ( $textFont * 2.5 ), 0 , "./1.ttf" , $waterText ); //取得使用 TrueType 字体的文本的范围 $w = $temp [ 2 ] - $temp [ 6 ]; $h = $temp [ 3 ] - $temp [ 7 ]; unset( $temp ); $label = "文字区域" ; } if( ( $ground_w < $w ) || ( $ground_h < $h ) ) { echo "需要加水印的图片的长度或宽度比水印" . $label . "还小，无法生成水印！" ; return; } switch( $waterPos ) { case 0 : //随机 $posX = rand ( 0 ,( $ground_w - $w )); $posY = rand ( 0 ,( $ground_h - $h )); break; case 1 : //1为顶端居左 $posX = 0 ; $posY = 0 ; break; case 2 : //2为顶端居中 $posX = ( $ground_w - $w ) / 2 ; $posY = 0 ; break; case 3 : //3为顶端居右 $posX = $ground_w - $w ; $posY = 0 ; break; case 4 : //4为中部居左 $posX = 0 ; $posY = ( $ground_h - $h ) / 2 ; break; case 5 : //5为中部居中 $posX = ( $ground_w - $w ) / 2 ; $posY = ( $ground_h - $h ) / 2 ; break; case 6 : //6为中部居右 $posX = $ground_w - $w ; $posY = ( $ground_h - $h ) / 2 ; break; case 7 : //7为底端居左 $posX = 0 ; $posY = $ground_h - $h ; break; case 8 : //8为底端居中 $posX = ( $ground_w - $w ) / 2 ; $posY = $ground_h - $h ; break; case 9 : //9为底端居右 $posX = $ground_w - $w ; $posY = $ground_h - $h ; break; default: //随机 $posX = rand ( 0 ,( $ground_w - $w )); $posY = rand ( 0 ,( $ground_h - $h )); break; } //设定图像的混色模式 imagealphablending ( $ground_im , true ); if( $isWaterImage ) //图片水印 { imagecopy ( $ground_im , $water_im , $posX , $posY , 0 , 0 , $water_w , $water_h ); //拷贝水印到目标文件 } else //文字水印 { 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( "水印文字颜色格式不正确！" ); } imagestring ( $ground_im , $textFont , $posX , $posY , $waterText , imagecolorallocate ( $ground_im , $R , $G , $B )); } //生成水印后的图片 @ unlink ( $groundImage ); switch( $ground_info [ 2 ]) //取得背景图片的格式 { case 1 : imagegif ( $ground_im , $groundImage );break; case 2 : imagejpeg ( $ground_im , $groundImage );break; case 3 : imagepng ( $ground_im , $groundImage );break; default:die( $errorMsg ); } //释放内存 if(isset( $water_info )) unset( $water_info ); if(isset( $water_im )) imagedestroy ( $water_im ); unset( $ground_info ); imagedestroy ( $ground_im ); }imageWaterMark ( "1.jpg" , 0 , "watermark.gif" , "http://www.qltv.com.cn" , 5 , "#FF0000" );//--------------------------------------------------------------------------------------- /*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>" ; //文字水印 imageWaterMark ( $uploadfile , 0 , "" , "http://www.qltv.com.cn" , 5 , "#FF0000" ); //图片水印 //$waterImage="./Hanweb_shuiyin.gif";//水印图片路径 //imageWaterMark($uploadfile,0,$waterImage); echo "<img src=\"" . $uploadfile . "\" border=\"0\">" ; } else { echo "Fail<br>" ; } } */?> <form enctype="multipart/form-data" method="POST"> 文件: <input name="userfile" type="file"> <input type="submit" value="上传"> </form>