PHP处理 单文件、多文件上传实例代码，供大家参考，具体内容如下
参数说明:
$max_file_size : 上传文件大小限制,单位BYTE
$destination_folder : 上传文件路径
$watermark : 是否附加水印(1为加水印,其他为不加水印);
使用说明:
- 将PHP.INI文件里面的"extension=PHP_gd2.dll"一行前面的;号去掉,因为我们要用到GD库;
- 将extension_dir =改为你的PHP_gd2.dll所在目录;
**/
//上传文件类型列表
$uptypes=array(
'image/jpg','image/jpeg','image/png','image/pjpeg','image/gif','image/bmp','image/x-png'
);
$max_file_size=210241024; //上传文件大小限制,单位BYTE
$destination_folder=get_stylesheet_directory().'/mytest/'; //上传文件路径
$watermark=1; //是否附加水印(1为加水印,其他为不加水印);
$watertype=1; //水印类型(1为文字,2为图片)
$waterposition=1; //水印位置(1为左下角,2为右下角,3为左上角,4为右上角,5为居中);
$waterstring="test"; //水印字符串
$waterimg="xplore.gif"; //水印图片
$imgpreview=1; //是否生成预览图(1为生成,其他为不生成);
$imgpreviewsize=1/2; //缩略图比例
if ($_SERVER['REQUEST_METHOD'] == 'POST')
{
$fileArray = $_FILES['upfile'];//获取多个文件的信息，注意：这里的键名不包含[]
print_r($fileArray);
echo "
";
if (!is_uploaded_file($_FILES["upfile"]['tmp_name']))
//是否存在文件
{
echo "图片不存在!";
exit;
}
$file = $_FILES["upfile"];
if($max_file_size < $file["size"])
//检查文件大小
{
echo "文件太大!";
exit;
}
if(!in_array($file["type"],$uptypes))
//检查文件类型
{
echo "文件类型不符!".$file["type"];
exit;
}
if(!file_exists($destination_folder))
{
mkdir($destination_folder);
}
$filename=$file["tmp_name"];
$image_size = getimagesize($filename);
$pinfo=pathinfo($file["name"]);
$ftype=$pinfo['extension'];
$destination = $destination_folder.time().".".$ftype;
//$destination = $destination_folder.$file["name"];
if (file_exists($destination) && $overwrite != true)
{
echo "同名文件已经存在了";
exit;
}
if(!move_uploaded_file ($filename,$destination))
{
echo "移动文件出错";
exit;
}
$pinfo=pathinfo($destination);
$fname=$pinfo[basename];
echo " 已经成功上传
文件名: ".$destination_folder.$fname."
";
echo " 宽度:".$image_size[0];
echo " 长度:".$image_size[1];
echo "
大小:".$file["size"]." bytes";
if($watermark==1)
{
$iinfo=getimagesize($destination,$iinfo);
$nimage=imagecreatetruecolor($image_size[0],$image_size[1]);
$white=imagecolorallocate($nimage,255,255);
$black=imagecolorallocate($nimage,0);
$red=imagecolorallocate($nimage,0);
imagefill($nimage,$white);
switch ($iinfo[2])
{
case 1:
$simage =imagecreatefromgif($destination);
break;
case 2:
$simage =imagecreatefromjpeg($destination);
break;
case 3:
$simage =imagecreatefrompng($destination);
break;
case 6:
$simage =imagecreatefromwbmp($destination);
break;
default:
die("不支持的文件类型");
exit;
}
imagecopy($nimage,$simage,$image_size[0],$image_size[1]);
imagefilledrectangle($nimage,1,$image_size[1]-15,80,$image_size[1],$white);
switch($watertype)
{
case 1: //加水印字符串
imagestring($nimage,2,3,$waterstring,$black);
break;
case 2: //加水印<a href="https://www.jb51.cc/tag/tupian/" target="_blank" class="keywords">图片</a>
$simage1 =imagecreatefromgif("xplore.gif");
imagecopy($nimage,$simage1,85,15);
imagedestroy($simage1);
break;
}
switch ($iinfo[2])
{
case 1:
//imagegif($nimage,$destination);
imagejpeg($nimage,$destination);
break;
case 2:
imagejpeg($nimage,$destination);
break;
case 3:
imagepng($nimage,$destination);
break;
case 6:
imagewbmp($nimage,$destination);
//imagejpeg($nimage,$destination);
break;
}
//覆盖原<a href="https://www.jb51.cc/tag/shangchuan/" target="_blank" class="keywords">上传</a><a href="https://www.jb51.cc/tag/wenjian/" target="_blank" class="keywords">文件</a>
imagedestroy($nimage);
imagedestroy($simage); }
if($imgpreview==1)
{
echo "
图片预览:
";
echo "<img src=\"/wp-content/themes/HotNewspro/mytest/".$fname."\" width=".($image_size[0]$imgpreviewsize)." height=".($image_size[1]$imgpreviewsize);
echo " alt=\"图片预览:\r文件名:".$destination."\r上传时间:\">";
}
}
?>