Php上传、生成缩略图、生成文字水印和图片水印
<?php
/*
'-##########################################-|
'| 程序设计：（绿竹居） |
'| MSN：[email]lzj_zhangjun@hotmail.com[/email] |
'| 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
$imgaddr = "img.jpg"; //图片水印
$fontname = "www.0724e.com"; //文字水印
//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;
$formatMsg = "暂不支持该文件格式，请用图片处理软件将图片转换为GIF、JPG、PNG格式。";
//读取水印文件
if (!emptyempty($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($formatMsg);
}
}
//读取背景图片
if (!emptyempty($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, $water_h); //拷贝水印到目标文件
} else { //文字水印
if (!emptyempty($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, "", $fontname, 5, "#FF0000");
//图片水印
//imageWaterMark($bigaddrname.$exname,5,$imgaddr);
//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="<?php echo 1024 * 100 ?>">
<input type="submit" name="Submit" value="上传图片" />
</form>本文地址：http://www.phprm.com/tuxiang/fs885.html
转载随意，但请附上文章地址:-)