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单文件上传与批量文件上传
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766 people have browsed it

一.实现单文件上传,要求自定义异常类来处理常见错误

代码部分：

  1. <?php
  2.  class upException extends Exception{
  4.     public function __toString()
  5.     {
  6.         return <<<UPE
  7.             <table>
  8.             <tr>
  9.                 <td>错误编号</td>
  10.                 <td>错误信息</td>
  11.                 <td>错误文件</td>
  12.                 <td>错误行号</td>
  13.             </tr>
  14.             <tr>
  15.                 <td>$this->code</td>
  16.                 <td>$this->message</td>
  17.                 <td>$this->file</td>
  18.                 <td>$this->line</td>
  19.             </tr>
  20.         </table>
  22.         <style>
  23.             table{text-align: center;border: 2px solid #000;border-collapse: collapse;}
  24.             td { border:1px solid black;padding: 10px;}
  25.             tr:first-of-type {background-color:#eee;}
  26.             tr:last-of-type td {color:lightsalmon;background-color:lightskyblue;}
  27.         </style>
  29.         UPE;
  30.     }
  32. }
  34. try{
  35.       //
  36. $fileNanme = $_FILES['my_file']['name'] ?? null;
  39. $errorcode = $_FILES['my_file']['error'];
  41.  if($errorcode > UPLOAD_ERR_OK){
  42.     switch($errorcode){
  43.         case UPLOAD_ERR_INI_SIZE:
  44.             throw new upException("文件超过`php.ini`中`upload_max_filesize`值",1);
  45.         break;
  46.         case UPLOAD_ERR_FORM_SIZE:
  47.             throw new upException("文件大小超过表单中`MAX_FILE_SIZE`指定的值",2);
  48.         break;
  50.         case UPLOAD_ERR_PARTIAL:
  51.             throw new upException("文件只有部分被上传",3);
  52.         break;
  54.         case UPLOAD_ERR_NO_FILE:
  55.             throw new upException("没有文件被上传",4);
  56.         break;
  58.         case UPLOAD_ERR_NO_TMP_DIR:
  59.             throw new upException("找不到临时文件夹",6);
  60.         break;
  61.         case UPLOAD_ERR_CANT_WRITE:
  62.             throw new upException("文件写入失败",7);
  63.         break;
  64.         default:
  65.         // 测试时建议关掉default: 避免误报影响
  66.         throw new upException('未知错误', 111);
  68.     }
  71.  }
  72.     $fileType = $_FILES['my_file']['type'] ?? null;
  73.     $type = strstr($fileType, '/', true); // "image"
  74.     if (!is_null($fileType)) {
  75.         if ($type !== 'image') throw new upException('文件类型错误',120);
  76.     }
  78.     $fileTmpNanme = $_FILES['my_file']['tmp_name'] ?? null;
  79.  //  is_uploaded_file（）：检查指定的文件是否是通过 HTTP POST 上传的
  80.     // echo  $fileTmpNanme ;
  81.     // echo is_uploaded_file($fileTmpNanme);
  82.     if($fileTmpNanme && is_uploaded_file($fileTmpNanme)){
  83.         //文件名
  84.         $orgename =  $_FILES['my_file']['name'] ?? null;
  85.         $ftype = strstr($orgename, '.');
  86.         //文件保存地址
  88.         $upload = "./upload";
  89.         // is_dir() 函数检查指定的文件是否是目录。
  90.         if(!is_dir($upload)){
  91.             mkdir($upload,0777,true);
  92.         }
  93.         //保存到服务器的文件地址
  94.         $upfile = $upload."/".time()."dddd".$ftype;
  96.         if(move_uploaded_file($fileTmpNanme,$upfile)){
  97.             echo '<img src="'.$upfile.'" alt="上传的图片" style="width: 100px;">
  98.             <span style="color: rosybrown;">图片上传成功</span>';
  99.         }else{
  100.             echo "上传失败";
  102.         }    
  104.     }
  106. }catch(upException $up){
  107.     echo $up;
  108. }
  110. ?>
  112. <!DOCTYPE html>
  113. <html lang="en">
  114. <head>
  115.     <meta charset="UTF-8">
  116.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  117.     <title>单文件上传</title>
  118. </head>
  119. <body>
  120.     <form action="" method="POST"" enctype="multipart/form-data">
  121.         <fieldset>
  122.             <legend>单文件上传</legend>
  123.             <!-- 前端设置上传文件大小,必须写到input:file之前  -->
  124.             <input type="hidden" name="MAX_FILE_SIZE" value="38000">
  125.             <input type="file" name="my_file">
  126.             <input type="submit" value="提交">
  127.         </fieldset>
  129.     </form>
  133. </body>
  134. </html>

文件位置截图：

前端截图：

二.文件批量上传

代码部分：

  1. <?php
  3. // printf('<pre>%s</pre>', print_r($_FILES, true));
  4.  class upException extends Exception{
  6.     public function __toString()
  7.     {
  8.         return <<<UPE
  9.             <table>
  10.             <tr>
  11.                 <td>错误编号</td>
  12.                 <td>错误信息</td>
  13.                 <td>错误文件</td>
  14.                 <td>错误行号</td>
  15.             </tr>
  16.             <tr>
  17.                 <td>$this->code</td>
  18.                 <td>$this->message</td>
  19.                 <td>$this->file</td>
  20.                 <td>$this->line</td>
  21.             </tr>
  22.         </table>
  24.         <style>
  25.             table{text-align: center;border: 2px solid #000;border-collapse: collapse;}
  26.             td { border:1px solid black;padding: 10px;}
  27.             tr:first-of-type {background-color:#eee;}
  28.             tr:last-of-type td {color:lightsalmon;background-color:lightskyblue;}
  29.         </style>
  31.         UPE;
  32.     }
  34. }
  36. $num = 0;
  37. foreach($_FILES as $file){
  39.     try{
  41.     $fileNanme = $file['name'] ?? null;
  42.     $errorcode = $file['error'];
  44.     if($errorcode > UPLOAD_ERR_OK){
  45.         switch($errorcode){
  46.             case UPLOAD_ERR_INI_SIZE:
  47.                 throw new upException("文件超过`php.ini`中`upload_max_filesize`值",1);
  48.             break;
  49.             case UPLOAD_ERR_FORM_SIZE:
  50.                 throw new upException("文件大小超过表单中`MAX_FILE_SIZE`指定的值",2);
  51.             break;
  53.             case UPLOAD_ERR_PARTIAL:
  54.                 throw new upException("文件只有部分被上传",3);
  55.             break;
  57.             case UPLOAD_ERR_NO_FILE:
  58.                 throw new upException("没有文件被上传",4);
  59.             break;
  61.             case UPLOAD_ERR_NO_TMP_DIR:
  62.                 throw new upException("找不到临时文件夹",6);
  63.             break;
  64.             case UPLOAD_ERR_CANT_WRITE:
  65.                 throw new upException("文件写入失败",7);
  66.             break;
  67.             default:
  68.             // 测试时建议关掉default: 避免误报影响
  69.             throw new upException('未知错误', 111);
  71.         }
  74.     }
  75.         $fileType = $file['type'] ?? null;
  76.         $type = strstr($fileType, '/', true); // "image"
  77.         if (!is_null($fileType)) {
  78.             if ($type !== 'image') throw new upException('文件类型错误',120);
  79.         }
  81.         $fileTmpNanme = $file['tmp_name'] ?? null;
  82.     //  is_uploaded_file（）：检查指定的文件是否是通过 HTTP POST 上传的
  84.         if($fileTmpNanme && is_uploaded_file($fileTmpNanme)){
  85.             //文件名
  86.             $orgename =  $file['name'] ?? null;
  87.             $ftype = strstr($orgename, '.');
  88.             //文件保存地址
  90.             $upload = "./uploads";
  91.             // is_dir() 函数检查指定的文件是否是目录。
  92.             if(!is_dir($upload)){
  93.                 mkdir($upload,0777,true);
  94.             }
  95.             //保存到服务器的文件地址
  96.             $upfile = $upload."/one".time().$num.$ftype;
  98.             if(move_uploaded_file($fileTmpNanme,$upfile)){
  99.                 $num++;
  100.                 echo '<img src="'.$upfile.'" alt="上传的图片" style="width: 100px;">
  101.                 <span style="color: rosybrown;">图片上传成功</span>';
  102.             }else{
  103.                 echo "上传失败";
  105.             }
  107.         }
  108.         // else{
  109.         //     throw new upException("文件上传方式不正确",119);
  110.         // }
  112.     }catch(upException $up){
  113.         echo $up;
  114.     }
  116. }
  118. ?>
  120. <!DOCTYPE html>
  121. <html lang="en">
  122. <head>
  123.     <meta charset="UTF-8">
  124.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  125.     <title>单文件上传</title>
  126. </head>
  127. <body>
  128.     <form action="" method="POST"" enctype="multipart/form-data">
  129.         <fieldset>
  130.             <legend>单文件上传</legend>
  131.             <!-- 前端设置上传文件大小,必须写到input:file之前  -->
  132.             <!-- <input type="hidden" name="MAX_FILE_SIZE" value="38000"> -->
  133.             <input type="file" name="pic1">
  134.             <input type="file" name="pic2">
  135.             <input type="file" name="pic3">
  136.             <input type="submit" value="提交">
  137.         </fieldset>
  139.     </form>
  141. </body>
  142. </html>

文件位置截图：

前端截图：

Correcting teacher：天蓬老师天蓬老师

Correction status：qualified

Teacher's comments：文件上传有许多要注意的地方
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