加水印的问题~~水印图片的背景怎么才能透明? 本帖最后由 love1989 于 2012-05-22 11:38:16 编辑 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 upload.class.php (1/2)<?phpclass upload { var $dir; //附件存放物理目录 var $time; //自定义文件上传时间 var $allow_types; //允许上传附件类型 var $field; //上传控件名称 var $maxsize; //最大允许文件大小,单位为KB var $thumb_width; //缩略图宽度 var $thumb_height; //缩略图高度 var $water_file; //水印图片地址 var $water_pos; //水印位置 var $water_trans;//水印透明度 //构造函数 //$types : 允许上传的文件类型 , $maxsize : 允许大小 , $field : 上传控件名称 , $time : 自定义上传时间 function upload($types = 'jpg|png', $maxsize = 1024, $field = 'attach', $time = '') { $this->allow_types = explode('|',$types); $this->maxsize = $maxsize * 1024; $this->field = $field; $this->time = $time ? $time : time(); } //设置并创建文件具体存放的目录 //$basedir : 基目录,必须为物理路径 //$filedir : 自定义子目录,可用参数{y}、{m}、{d} function set_dir($basedir,$filedir = '') { $dir = $basedir; !is_dir($dir) && @mkdir($dir,0777); if (!empty($filedir)) { $filedir = str_replace(array('{y}','{m}','{y}'),array(date('Y',$this->time),date('m',$this->time),date('d',$this->time)),strtolower($filedir)); $dirs = explode('/',$filedir); foreach ($dirs as $d) { !empty($d) && $dir .= $d.'/'; !is_dir($dir) && @mkdir($dir,0777); } } $this->dir = $dir; } //图片缩略图设置,如果不生成缩略图则不用设置 //$width : 缩略图宽度 , $height : 缩略图高度 function set_thumb ($width = 0, $height = 0) { $this->thumb_width = $width; $this->thumb_height = $height; } //图片水印设置,如果不生成添加水印则不用设置 //$file : 水印图片 , $pos : 水印位置 , $trans : 水印透明度 function set_water ($file, $pos = 6, $trans = 80) { $this->water_file = $file; $this->water_pos = $pos; $this->water_trans = $trans; } function execute() { $files = array(); //成功上传的文件信息 $field = $this->field; $keys = array_keys($_FILES[$field]['name']); foreach ($keys as $key) { if (!$_FILES[$field]['name'][$key]) continue; $fileext = $this->fileext($_FILES[$field]['name'][$key]); //获取文件扩展名 $filename = $this->time.mt_rand(100,999).'.'.$fileext; //生成文件名 $filedir = $this->dir; //附件实际存放目录 $filesize = $_FILES[$field]['size'][$key]; //文件大小 //文件类型不允许 if (!in_array($fileext,$this->allow_types)) { $files[$key]['name'] = $_FILES[$field]['name'][$key]; $files[$key]['flag'] = -1; continue; } //文件大小超出 if ($filesize > $this->maxsize) { $files[$key]['name'] = $_FILES[$field]['name'][$key]; $files[$key]['flag'] = -2; continue; } $files[$key]['name'] = $filename; $files[$key]['dir'] = $filedir; $files[$key]['size'] = $filesize; //保存上传文件并删除临时文件 if (is_uploaded_file($_FILES[$field]['tmp_name'][$key])) { move_uploaded_file($_FILES[$field]['tmp_name'][$key],$filedir.$filename); @unlink($_FILES[$field]['tmp_name'][$key]); $files[$key]['flag'] = 1; //对图片进行加水印和生成缩略图 if (in_array($fileext,array('jpg','png','gif'))) { if ($this->thumb_width) { if ($this->create_thumb($filedir.$filename,$filedir.'thumb_'.$filename)) { $files[$key]['thumb'] = 'thumb_'.$filename; //缩略图文件名 } } $this->create_water($filedir.$filename); } } } return $files; } //创建缩略图,以相同的扩展名生成缩略图 //$src_file : 来源图像路径 , $thumb_file : 缩略图路径 function create_thumb ($src_file,$thumb_file) { $t_width = $this->thumb_width; $t_height = $this->thumb_height; if (!file_exists($src_file)) return false; $src_info = getImageSize($src_file); //如果来源图像小于或等于缩略图则拷贝源图像作为缩略图 if ($src_info[0] <= $t_width && $src_info[1] <= $t_height) { if (!copy($src_file,$thumb_file)) { return false; } return true; } //按比例计算缩略图大小 if ($src_info[0] - $t_width > $src_info[1] - $t_height) { $t_height = ($t_width / $src_info[0]) * $src_info[1]; } else { $t_width = ($t_height / $src_info[1]) * $src_info[0]; } upload.class.php(2/2)//取得文件扩展名 $fileext = $this->fileext($src_file); switch ($fileext) { case 'jpg' : $src_img = ImageCreateFromJPEG($src_file); break; case 'png' : $src_img = ImageCreateFromPNG($src_file); break; case 'gif' : $src_img = ImageCreateFromGIF($src_file); break; } //创建一个真彩色的缩略图像 $thumb_img = @ImageCreateTrueColor($t_width,$t_height); //ImageCopyResampled函数拷贝的图像平滑度较好,优先考虑 if (function_exists('imagecopyresampled')) { @ImageCopyResampled($thumb_img,$src_img,0,0,0,0,$t_width,$t_height,$src_info[0],$src_info[1]); } else { @ImageCopyResized($thumb_img,$src_img,0,0,0,0,$t_width,$t_height,$src_info[0],$src_info[1]); } //生成缩略图 switch ($fileext) { case 'jpg' : ImageJPEG($thumb_img,$thumb_file); break; case 'gif' : ImageGIF($thumb_img,$thumb_file); break; case 'png' : ImagePNG($thumb_img,$thumb_file); break; } //销毁临时图像 @ImageDestroy($src_img); @ImageDestroy($thumb_img); return true; } //为图片添加水印 //$file : 要添加水印的文件 function create_water ($file) { //文件不存在则返回 if (!file_exists($this->water_file) || !file_exists($file)) return; if (!function_exists('getImageSize')) return; //检查GD支持的文件类型 $gd_allow_types = array(); if (function_exists('ImageCreateFromGIF')) $gd_allow_types['image/gif'] = 'ImageCreateFromGIF'; if (function_exists('ImageCreateFromPNG')) $gd_allow_types['image/png'] = 'ImageCreateFromPNG'; if (function_exists('ImageCreateFromJPEG')) $gd_allow_types['image/jpeg'] = 'ImageCreateFromJPEG'; //获取文件信息 $fileinfo = getImageSize($file); $wminfo = getImageSize($this->water_file); if ($fileinfo[0] < $wminfo[0] || $fileinfo[1] < $wminfo[1]) return; if (array_key_exists($fileinfo['mime'],$gd_allow_types)) { if (array_key_exists($wminfo['mime'],$gd_allow_types)) { //从文件创建图像 $temp = $gd_allow_types[$fileinfo['mime']]($file); $temp_wm = $gd_allow_types[$wminfo['mime']]($this->water_file); //水印位置 switch ($this->water_pos) { case 1 : //顶部居左 $dst_x = 0; $dst_y = 0; break; case 2 : //顶部居中 $dst_x = ($fileinfo[0] - $wminfo[0]) / 2; $dst_y = 0; break; case 3 : //顶部居右 $dst_x = $fileinfo[0]; $dst_y = 0; break; case 4 : //底部居左 $dst_x = 0; $dst_y = $fileinfo[1]; break; case 5 : //底部居中 $dst_x = ($fileinfo[0] - $wminfo[0]) / 2; $dst_y = $fileinfo[1]; break; case 6 : //底部居右 $dst_x = $fileinfo[0]-$wminfo[0]; $dst_y = $fileinfo[1]-$wminfo[1]; break; default : //随机 $dst_x = mt_rand(0,$fileinfo[0]-$wminfo[0]); $dst_y = mt_rand(0,$fileinfo[1]-$wminfo[1]); } if (function_exists('ImageAlphaBlending')) ImageAlphaBlending($temp_wm,True); //设定图像的混色模式 if (function_exists('ImageSaveAlpha')) ImageSaveAlpha($temp_wm,True); //保存完整的 alpha 通道信息 //为图像添加水印 if (function_exists('imageCopyMerge')) { ImageCopyMerge($temp,$temp_wm,$dst_x,$dst_y,0,0,$wminfo[0],$wminfo[1],$this->water_trans); } else { ImageCopyMerge($temp,$temp_wm,$dst_x,$dst_y,0,0,$wminfo[0],$wminfo[1]); } //保存图片 switch ($fileinfo['mime']) { case 'image/jpeg' : @imageJPEG($temp,$file); break; case 'image/png' : @imagePNG($temp,$file); break; case 'image/gif' : @imageGIF($temp,$file); break; } //销毁零时图像 @imageDestroy($temp); @imageDestroy($temp_wm); } } } //获取文件扩展名 function fileext($filename) { return strtolower(substr(strrchr($filename,'.'),1,10)); }}?> 调用代码:<?php if ($_GET['action'] == 'save') { include_once("upload.class.php"); $up = new upload(); $up->set_dir(dirname(__FILE__).'/upload/','{y}/{m}'); $up->set_thumb(100,80); $up->set_water(dirname(__FILE__).'/images/waterimg.png',6,30); $fs = $up->execute(); var_dump($fs); } ?> <html> <head><title>test</title></head> <body style="margin:0;padding:0"> <form name="upload" method="post" action="?action=save" enctype="multipart/form-data" style="margin:0"> <input type="file" name="attach[]" /> <input type="file" name="attach[]" /> <input type="submit" name="submit" value="上 传" /> </form> </body> </html> 由于upload.class.php 代码太长 分成两个了 直接凑到一起即可...谢谢大虾帮忙看看 相当简单...弄张透明的gif或者png图片就欧了!给哥哥分啊!哈哈哈 我自己解决了...具体的解决方案是:1.查找上面的代码“//为图像添加水印” 这个下面的if和else里面的内容;2.把if else注释掉;3.替换成这个...imagecopy($temp,$temp_wm,$dst_x,$dst_y,0,0,$wminfo[0],$wminfo[1]); imagedestroy($temp_wm);多谢~~~ dreamweaver連接mysql數據庫連接不上 批量提交form表单中的数据 问一个PHP URL重写的问题 setcookie domain参数的问题 PHP操作文件,请高手帮写代码 \n的换行问题 新手上路,请教博客源码的阅读方法 怎樣可維持在textarea裡的格式? 求 jquery autocomplete 和数据库 连接,即数据来自数据库??急急急 帮我看看这段代码 如何检查页面URL中是否有某个字符串? PHP链接不上MYSQL
class upload { var $dir; //附件存放物理目录
var $time; //自定义文件上传时间
var $allow_types; //允许上传附件类型
var $field; //上传控件名称
var $maxsize; //最大允许文件大小,单位为KB var $thumb_width; //缩略图宽度
var $thumb_height; //缩略图高度 var $water_file; //水印图片地址
var $water_pos; //水印位置
var $water_trans;//水印透明度
//构造函数
//$types : 允许上传的文件类型 , $maxsize : 允许大小 , $field : 上传控件名称 , $time : 自定义上传时间
function upload($types = 'jpg|png', $maxsize = 1024, $field = 'attach', $time = '') {
$this->allow_types = explode('|',$types);
$this->maxsize = $maxsize * 1024;
$this->field = $field;
$this->time = $time ? $time : time();
} //设置并创建文件具体存放的目录
//$basedir : 基目录,必须为物理路径
//$filedir : 自定义子目录,可用参数{y}、{m}、{d}
function set_dir($basedir,$filedir = '') {
$dir = $basedir;
!is_dir($dir) && @mkdir($dir,0777);
if (!empty($filedir)) {
$filedir = str_replace(array('{y}','{m}','{y}'),array(date('Y',$this->time),date('m',$this->time),date('d',$this->time)),strtolower($filedir));
$dirs = explode('/',$filedir);
foreach ($dirs as $d) {
!empty($d) && $dir .= $d.'/';
!is_dir($dir) && @mkdir($dir,0777);
}
}
$this->dir = $dir;
} //图片缩略图设置,如果不生成缩略图则不用设置
//$width : 缩略图宽度 , $height : 缩略图高度
function set_thumb ($width = 0, $height = 0) {
$this->thumb_width = $width;
$this->thumb_height = $height;
} //图片水印设置,如果不生成添加水印则不用设置
//$file : 水印图片 , $pos : 水印位置 , $trans : 水印透明度
function set_water ($file, $pos = 6, $trans = 80) {
$this->water_file = $file;
$this->water_pos = $pos;
$this->water_trans = $trans;
} function execute() {
$files = array(); //成功上传的文件信息
$field = $this->field;
$keys = array_keys($_FILES[$field]['name']);
foreach ($keys as $key) {
if (!$_FILES[$field]['name'][$key]) continue;
$fileext = $this->fileext($_FILES[$field]['name'][$key]); //获取文件扩展名
$filename = $this->time.mt_rand(100,999).'.'.$fileext; //生成文件名
$filedir = $this->dir; //附件实际存放目录
$filesize = $_FILES[$field]['size'][$key]; //文件大小
//文件类型不允许
if (!in_array($fileext,$this->allow_types)) {
$files[$key]['name'] = $_FILES[$field]['name'][$key];
$files[$key]['flag'] = -1;
continue;
} //文件大小超出
if ($filesize > $this->maxsize) {
$files[$key]['name'] = $_FILES[$field]['name'][$key];
$files[$key]['flag'] = -2;
continue;
} $files[$key]['name'] = $filename;
$files[$key]['dir'] = $filedir;
$files[$key]['size'] = $filesize; //保存上传文件并删除临时文件
if (is_uploaded_file($_FILES[$field]['tmp_name'][$key])) {
move_uploaded_file($_FILES[$field]['tmp_name'][$key],$filedir.$filename);
@unlink($_FILES[$field]['tmp_name'][$key]);
$files[$key]['flag'] = 1; //对图片进行加水印和生成缩略图
if (in_array($fileext,array('jpg','png','gif'))) {
if ($this->thumb_width) {
if ($this->create_thumb($filedir.$filename,$filedir.'thumb_'.$filename)) {
$files[$key]['thumb'] = 'thumb_'.$filename; //缩略图文件名
}
}
$this->create_water($filedir.$filename);
}
}
} return $files;
} //创建缩略图,以相同的扩展名生成缩略图
//$src_file : 来源图像路径 , $thumb_file : 缩略图路径
function create_thumb ($src_file,$thumb_file) {
$t_width = $this->thumb_width;
$t_height = $this->thumb_height; if (!file_exists($src_file)) return false; $src_info = getImageSize($src_file); //如果来源图像小于或等于缩略图则拷贝源图像作为缩略图
if ($src_info[0] <= $t_width && $src_info[1] <= $t_height) {
if (!copy($src_file,$thumb_file)) {
return false;
}
return true;
} //按比例计算缩略图大小
if ($src_info[0] - $t_width > $src_info[1] - $t_height) {
$t_height = ($t_width / $src_info[0]) * $src_info[1];
} else {
$t_width = ($t_height / $src_info[1]) * $src_info[0];
}
upload.class.php(2/2)
//取得文件扩展名
$fileext = $this->fileext($src_file); switch ($fileext) {
case 'jpg' :
$src_img = ImageCreateFromJPEG($src_file); break;
case 'png' :
$src_img = ImageCreateFromPNG($src_file); break;
case 'gif' :
$src_img = ImageCreateFromGIF($src_file); break;
} //创建一个真彩色的缩略图像
$thumb_img = @ImageCreateTrueColor($t_width,$t_height); //ImageCopyResampled函数拷贝的图像平滑度较好,优先考虑
if (function_exists('imagecopyresampled')) {
@ImageCopyResampled($thumb_img,$src_img,0,0,0,0,$t_width,$t_height,$src_info[0],$src_info[1]);
} else {
@ImageCopyResized($thumb_img,$src_img,0,0,0,0,$t_width,$t_height,$src_info[0],$src_info[1]);
} //生成缩略图
switch ($fileext) {
case 'jpg' :
ImageJPEG($thumb_img,$thumb_file); break;
case 'gif' :
ImageGIF($thumb_img,$thumb_file); break;
case 'png' :
ImagePNG($thumb_img,$thumb_file); break;
} //销毁临时图像
@ImageDestroy($src_img);
@ImageDestroy($thumb_img); return true; } //为图片添加水印
//$file : 要添加水印的文件
function create_water ($file) { //文件不存在则返回
if (!file_exists($this->water_file) || !file_exists($file)) return;
if (!function_exists('getImageSize')) return;
//检查GD支持的文件类型
$gd_allow_types = array();
if (function_exists('ImageCreateFromGIF')) $gd_allow_types['image/gif'] = 'ImageCreateFromGIF';
if (function_exists('ImageCreateFromPNG')) $gd_allow_types['image/png'] = 'ImageCreateFromPNG';
if (function_exists('ImageCreateFromJPEG')) $gd_allow_types['image/jpeg'] = 'ImageCreateFromJPEG'; //获取文件信息
$fileinfo = getImageSize($file);
$wminfo = getImageSize($this->water_file); if ($fileinfo[0] < $wminfo[0] || $fileinfo[1] < $wminfo[1]) return; if (array_key_exists($fileinfo['mime'],$gd_allow_types)) {
if (array_key_exists($wminfo['mime'],$gd_allow_types)) {
//从文件创建图像
$temp = $gd_allow_types[$fileinfo['mime']]($file);
$temp_wm = $gd_allow_types[$wminfo['mime']]($this->water_file); //水印位置
switch ($this->water_pos) {
case 1 : //顶部居左
$dst_x = 0; $dst_y = 0; break;
case 2 : //顶部居中
$dst_x = ($fileinfo[0] - $wminfo[0]) / 2; $dst_y = 0; break;
case 3 : //顶部居右
$dst_x = $fileinfo[0]; $dst_y = 0; break;
case 4 : //底部居左
$dst_x = 0; $dst_y = $fileinfo[1]; break;
case 5 : //底部居中
$dst_x = ($fileinfo[0] - $wminfo[0]) / 2; $dst_y = $fileinfo[1]; break;
case 6 : //底部居右
$dst_x = $fileinfo[0]-$wminfo[0]; $dst_y = $fileinfo[1]-$wminfo[1]; break;
default : //随机
$dst_x = mt_rand(0,$fileinfo[0]-$wminfo[0]); $dst_y = mt_rand(0,$fileinfo[1]-$wminfo[1]);
} if (function_exists('ImageAlphaBlending')) ImageAlphaBlending($temp_wm,True); //设定图像的混色模式
if (function_exists('ImageSaveAlpha')) ImageSaveAlpha($temp_wm,True); //保存完整的 alpha 通道信息 //为图像添加水印
if (function_exists('imageCopyMerge')) {
ImageCopyMerge($temp,$temp_wm,$dst_x,$dst_y,0,0,$wminfo[0],$wminfo[1],$this->water_trans);
} else {
ImageCopyMerge($temp,$temp_wm,$dst_x,$dst_y,0,0,$wminfo[0],$wminfo[1]);
} //保存图片
switch ($fileinfo['mime']) {
case 'image/jpeg' :
@imageJPEG($temp,$file);
break;
case 'image/png' :
@imagePNG($temp,$file);
break;
case 'image/gif' :
@imageGIF($temp,$file);
break;
}
//销毁零时图像
@imageDestroy($temp);
@imageDestroy($temp_wm);
}
}
} //获取文件扩展名
function fileext($filename) {
return strtolower(substr(strrchr($filename,'.'),1,10));
}
}
?>
if ($_GET['action'] == 'save') {
include_once("upload.class.php");
$up = new upload();
$up->set_dir(dirname(__FILE__).'/upload/','{y}/{m}');
$up->set_thumb(100,80);
$up->set_water(dirname(__FILE__).'/images/waterimg.png',6,30);
$fs = $up->execute();
var_dump($fs);
}
?>
<html>
<head><title>test</title></head>
<body style="margin:0;padding:0">
<form name="upload" method="post" action="?action=save" enctype="multipart/form-data" style="margin:0">
<input type="file" name="attach[]" />
<input type="file" name="attach[]" />
<input type="submit" name="submit" value="上 传" />
</form>
</body>
</html>
谢谢大虾帮忙看看
具体的解决方案是:
1.查找上面的代码“//为图像添加水印” 这个下面的if和else里面的内容;
2.把if else注释掉;
3.替换成这个...imagecopy($temp,$temp_wm,$dst_x,$dst_y,0,0,$wminfo[0],$wminfo[1]);
imagedestroy($temp_wm);
多谢~~~