2016/4/19 ①单个文件上传 ②上传图片后 预览图片
2016-04-19 16:22
363 查看
1,f1.php
2,f1chuli.php
View Code
显示效果: 从未选 到选中 到上传后 显示预览
上传相同的文件 因上传时间的不同导致上传文件的名称不同 加时间戳 和 后缀
![](https://oscdn.geek-share.com/Uploads/Images/Content/201909/26/07dd9107829a937abbae62264cf018f5.png)
![](https://oscdn.geek-share.com/Uploads/Images/Content/201909/26/ec4ea39afdf974e05a1a265452ca572f.png)
![](https://oscdn.geek-share.com/Uploads/Images/Content/201909/26/86b3ccbd48b70e6407f3f9ee900c9702.png)
文件目录显示效果:
![](https://oscdn.geek-share.com/Uploads/Images/Content/201909/26/7d17586bd2b09f4475132e3c7986f524.png)
![](https://oscdn.geek-share.com/Uploads/Images/Content/201909/26/c8c057746241b24592b30bbdeb73dabb.png)
3,待整理 文件名 随机获取
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> </head> <body> <!-- 作业:在网上找上传图片预览的代码 上传服务器 再预览--> <form action="f1chuli.php" method="post" enctype="multipart/form-data"> <input type="file" name="file"></input> <input type="submit" value="上传"></input> </form> </body> </html>
2,f1chuli.php
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <?php $uptypes=array('image/jpg', //上传文件类型列表 'image/jpeg', 'image/png', 'image/pjpeg', 'image/gif', 'image/bmp', 'image/x-png'); $max_file_size=5000000; //上传文件大小限制, 单位BYTE $destination_folder="upload/"; //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="newphp.site.cz"; //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); $imgpreviewsize=1/2; //缩略图比例 ?> <style type="text/css">body,td{font-family:tahoma,verdana,arial;font-size:11px;line-height:15px;background-color:white;color:#666666;margin-left:20px;} strong{font-size:12px;} aink{color:#0066CC;} a:hover{color:#FF6600;} aisited{color:#003366;} a:active{color:#9DCC00;} table.itable{} td.irows{height:20px;background:url("index.php?i=dots" repeat-x bottom}</style> </head> <body> <center><form enctype="multipart/form-data" method="post" name="upform"> 上传文件: <br><br><br> <input name="upfile" type="file" style="width:200;border:1 solid #9a9999; font-size:9pt; background-color:#ffffff" size="17"> <input type="submit" value="上传" style="width:30;border:1 solid #9a9999; font-size:9pt; background-color:#ffffff" size="17"><br><br><br> 允许上传的文件类型为:jpg|jpeg|png|pjpeg|gif|bmp|x-png|swf <br><br> <a href="index.php">返回</a> </form> <?php if ($_SERVER['REQUEST_METHOD'] == 'POST') { if (!is_uploaded_file($_FILES["upfile"]["tmp_name"])) //是否存在文件 { echo "<font color='red'>文件不存在!</font>"; exit; } $file = $_FILES["upfile"]; if($max_file_size < $file["size"]) //检查文件大小 { echo "<font color='red'>文件太大!</font>"; exit; } if(!in_array($file["type"], $uptypes)) //检查文件类型 { echo "<font color='red'>只能上传图像文件或Flash!</font>"; exit; } if(!file_exists($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; if (file_exists($destination) && $overwrite != true) { echo "<font color='red'>同名文件已经存在了!</a>"; exit; } if(!move_uploaded_file ($filename, $destination)) { echo "<font color='red'>移动文件出错!</a>"; exit; } $pinfo=pathinfo($destination); $fname=$pinfo["basename"]; echo " <font color=red>已经成功上传</font><br>文件名: <font color=blue>".$destination_folder.$fname."</font><br>"; echo " 宽度:".$image_size[0]; echo " 长度:".$image_size[1]; if($watermark==1) { $iinfo=getimagesize($destination,$iinfo); $nimage=imagecreatetruecolor($image_size[0],$image_size[1]); $white=imagecolorallocate($nimage,255,255,255); $black=imagecolorallocate($nimage,0,0,0); $red=imagecolorallocate($nimage,255,0,0); imagefill($nimage,0,0,$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("<font color='red'>不能上传此类型文件!</a>"); exit; } imagecopy($nimage,$simage,0,0,0,0,$image_size[0],$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,$image_size[1]-15,$waterstring,$black); break; case 2: //加水印图片 $simage1 =imagecreatefromgif("xplore.gif"); imagecopy($nimage,$simage1,0,0,0,0,85,15); imagedestroy($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, $destination); break; } //覆盖原上传文件 imagedestroy($nimage); imagedestroy($simage); } if($imgpreview==1) { echo "<br>图片预览:<br>"; echo "<a href=\"".$destination."\" target='_blank'><img src=\"".$destination."\" 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:\" border='0'></a>"; } } ?> </center> </body> </html>
View Code
显示效果: 从未选 到选中 到上传后 显示预览
上传相同的文件 因上传时间的不同导致上传文件的名称不同 加时间戳 和 后缀
![](https://oscdn.geek-share.com/Uploads/Images/Content/201909/26/07dd9107829a937abbae62264cf018f5.png)
![](https://oscdn.geek-share.com/Uploads/Images/Content/201909/26/ec4ea39afdf974e05a1a265452ca572f.png)
![](https://oscdn.geek-share.com/Uploads/Images/Content/201909/26/86b3ccbd48b70e6407f3f9ee900c9702.png)
文件目录显示效果:
![](https://oscdn.geek-share.com/Uploads/Images/Content/201909/26/7d17586bd2b09f4475132e3c7986f524.png)
![](https://oscdn.geek-share.com/Uploads/Images/Content/201909/26/c8c057746241b24592b30bbdeb73dabb.png)
3,待整理 文件名 随机获取
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