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PHP上传、生成缩略图、生成文字水印和图片水印
作者：绿竹居 来源：Internet
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CODE:
<?php
/*
'-##########################################-|
'| 程序设计：（绿竹居） |
'| QQ：102360607 |
'| MSN：lzj_zhangjun@hotmail.com |
'| Email:cszjun@gmail.com |
'| 结合自己以前做的上传和生成缩略和改编一个
'| 老前辈的生成图片水印做成这个 |
'| 上传+生成缩略图+生成文字水印和图片水印 |
'| 可以直接引用 |
'-##########################################-|
*/
//审明图片文件夹
$bigfolder="img";
$smallfolder="smallimg";
//审明文件夹名称 以年月日来建议文件夹
$fdate=date("Ymd");
//echo $fdate;
//审明文件名称。以年月日时分秒命名
$fname=date("YmdHis");
$bigname="0724e_com_".$fname;
$smallname="0724e_com_".$fname."_s";
//echo $fname."<br/>".$bigname."<br/>".$smallname;
//确定大小文件夹的名称和路经
$bigaddrname=$bigfolder."/".$fdate."/".$bigname;
$smalladdrname=$smallfolder."/".$fdate."/".$smallname;
//审明小图片的高度和宽度
$RESIZEWIDTH=180;
$RESIZEHEIGHT=150;
//审明水印的文字或图片的地址及字体的地址
$fontaddr="ariblk.ttf";
$imgaddr="img.jpg";
$fontname="www.0724e.com";
//充许上传的文件扩展名
$exit_name=array(".jpg",".gif",".png");
if (isset($_POST['Submit'])){
//上传部分----------------------------
//定议上传名称和上传错误
$upfile=$_FILES['image']['name'];
$uperror=$_FILES['image']['error'];
//最简表单验证
switch ($uperror) {
case 1:
die("<div align=\"center\">上传真过PHP设置充许的最大值<a href=\"javascript.:history.back();\">点击返回</a></div>");
break;
case 2:
die("<div align=\"center\">上传超过了表单充许的最大值<a href=\"javascript.:history.back();\">点击返回</a></div>");
break;
case 3:
die("<div align=\"center\">文件只有部分被上传了<a href=\"javascript.:history.back();\">点击返回</a></div>");
break;
case 4:
die("<div align=\"center\">文件不有被上传<a href=\"javascript.:history.back();\">点击返回</a></div>");
break;
}
//检测扩展是否是充许上传的文件类型
//取得文件扩展名
$exname=strrchr($upfile,".");
//判断取得扩展名是否在要求的扩展名内
if(!in_array($exname,$exit_name))
die("<div align=\"center\">文件扩展名不对。只允许上传jpg gif png的图片<a href=\"javascript.:history.back();\">点击返回</a></div>");
//检测存放图片的目录和子目录是否存在，如果不存在则建目录和子目录，并给目录最大权限777 对LINUX或unix对WINDOWS没必要
//大图
if (!file_exists($bigfolder)){
mkdir($bigfolder,0777);
mkdir($bigfolder."/".$fdate,0777);
}else{
if (!file_exists($bigfolder."/".$fdate)){
mkdir($bigfolder."/".$fdate,0777);
}
}
//缩略图
if (!file_exists($smallfolder)){
mkdir($smallfolder,0777);
mkdir($smallfolder."/".$fdate,0777);
}else{
if (!file_exists($smallfolder."/".$fdate)){
mkdir($smallfolder."/".$fdate,0777);
}
}
//创建目录结束
//得到临时上传的文件
$upfiletmp=$_FILES['image']['tmp_name'];
//判断临时文件是否存在
if ($uperror==6)
die("<div align=\"center\">找不到临时上传文件，上传失败<a href=\"javascript.:history.back();\">点击返回</a></div>");
//水印部分==========================================
//水印函数开始============
/** $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；
* $textColor 文字颜色，值为十六进制颜色值，默认为#FF0000(红色)；
* */
function imageWaterMark($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,"./cour.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);
}
//水印函数完
//存在则移动完在上传
$goodupfile=@move_uploaded_file($upfiletmp,$bigaddrname.$exname);
if (!$goodupfile){
die("<div align=\"center\">上传图片失败<a href=\"javascript.:history.back();\">点击返回</a></div>");
}else{
//文字水印
imageWaterMark($bigaddrname.$exname,5,"","HTTP://WWW.0724E.COM",5,"#FF0000");
//图片水印
//$waterImage="img.jpg";//水印图片路径
//imageWaterMark($bigaddrname.$exname,5,$waterImage);
//结束水印部分===================================
//缩略图部分------------------------------------------------------------
//判断缩略图大小函数-----
function ResizeImage($im,$maxwidth,$maxheight,$name){
$width = imagesx($im);
$height = imagesy($im);
if(($maxwidth && $width > $maxwidth) || ($maxheight && $height > $maxheight)){
if($maxwidth && $width > $maxwidth){
$widthratio = $maxwidth/$width;
$RESIZEWIDTH=true;
}
if($maxheight && $height > $maxheight){
$heightratio = $maxheight/$height;
$RESIZEHEIGHT=true;
}
if($RESIZEWIDTH && $RESIZEHEIGHT){
if($widthratio < $heightratio){
$ratio = $widthratio;
}else{
$ratio = $heightratio;
}
}elseif($RESIZEWIDTH){
$ratio = $widthratio;
}elseif($RESIZEHEIGHT){
$ratio = $heightratio;
}
$newwidth = $width * $ratio;
$newheight = $height * $ratio;
if(function_exists("imagecopyresampled")){
$newim = imagecreatetruecolor($newwidth, $newheight);
imagecopyresampled($newim, $im, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
}else{
$newim = imagecreate($newwidth, $newheight);
imagecopyresized($newim, $im, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
}
ImageJpeg ($newim,$smalladdrname.$name.".jpg");
ImageDestroy ($newim);
}else{
ImageJpeg ($im,$smalladdrname.$name.".jpg");
}
}
//生成部分
if($_FILES['image']['size']){
if($_FILES['image']['type'] == "image/pjpeg"){
$im = imagecreatefromjpeg($bigaddrname.$exname);
}elseif($_FILES['image']['type'] == "image/x-png"){
$im = imagecreatefrompng($bigaddrname.$exname);
}elseif($_FILES['image']['type'] == "image/gif"){
$im = imagecreatefromgif($bigaddrname.$exname);
}
if($im){
if(file_exists($smalladdrname.".jpg")){
unlink($smalladdrname.".jpg");
}
ResizeImage($im,$RESIZEWIDTH,$RESIZEHEIGHT,$smalladdrname);
ImageDestroy ($im);
}
}
echo "<div align='center'><a href='javascript.:window.history.back()'>上传成功</a></div>";
}
//缩略图结束-----------------------------------------------------
}
?>
<form. action="" method="post" enctype="multipart/form-data" name="form1" id="form1">
<input type="file" name="image" />
<input type="hidden" name="MAX_FILE_SIZE" value="<?=1024*100?>">
<input type="submit" name="Submit" value="上传图片" />
</form>
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