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文件上传异常类处理和文件上传类（0731）
丶久而旧之丶
Original
620 people have browsed it

文件上传

自定义异常类

  1. <?php
  2. // 文件上传自定义异常类
  3. class UploadException extends Exception
  4. {
  5.     public function __toString()
  6.     {
  7.         return  <<< UPLOAD
  8.         <table>
  9.         <tr>
  10.         <th>错误编号</th>
  11.         <th>错误信息</th>
  12.         <th>错误文件</th>
  13.         <th>错误行号</th>
  14.         </tr>
  15.         <tr>
  16.         <td>$this->code</td>
  17.         <td>$this->message</td>
  18.         <td>$this->file</td>
  19.         <td>$this->line</td>
  20.         </tr>
  21.         </table>
  22.         <style>
  23.         table {border:1px solid black;border-collapse:collapse;text-align:center;}
  24.         th,td {border:1px solid black;}
  25.         tr:last-of-type {color: red;}
  26.         </style>
  27. UPLOAD;
  28.     }
  29. }
  30. try {
  31.     $fileCode = $_FILES['my_pic']['error'] ?? null;
  32.     if ($fileCode && ($fileCode > UPLOAD_ERR_OK)) {
  33.         switch ($fileCode) {
  34.             case UPLOAD_ERR_INI_SIZE:
  35.                 throw new UploadException('超过了php.ini中的大小设置', 1);
  36.                 break;
  37.             case UPLOAD_ERR_FORM_SIZE:
  38.                 throw new UploadException('超过了前端MAX_FILE_SIZE中的大小设置', 2);
  39.                 break;
  40.             case UPLOAD_ERR_PARTIAL:
  41.                 throw new UploadException('文件只有部分被上传', 3);
  42.                 break;
  43.             case UPLOAD_ERR_NO_FILE:
  44.                 throw new UploadException('没有文件上传', 4);
  45.                 break;
  46.             case UPLOAD_ERR_NO_TMP_DIR:
  47.                 throw new UploadException('找不到临时文件夹', 6);
  48.                 break;
  49.             case UPLOAD_ERR_CANT_WRITE:
  50.                 throw new UploadException('文件写入失败', 7);
  51.                 break;
  52.             default:
  53.                 throw new UploadException('未知类型错误', 5);
  54.         }
  55.     }
  56.     // 判断文件类型
  57.     $type = strstr($_FILES['my_pic']['type'], '/', true) ?? null;
  58.     if ($type && ($type !== 'image')) throw new UploadException('不是有效的图片格式', 8);
  59.     // 判断是否是POst方式上传
  60.     $tmp_name = $_FILES['my_pic']['tmp_name'] ?? null;
  61.     if ($tmp_name && (!(is_uploaded_file($tmp_name)))) throw new UploadException('不是有效的上传方式', 9);
  62. } catch (UploadException $e) {
  63.     echo $e;
  64. }
  65. ?>
  66. <!DOCTYPE html>
  67. <html lang="en">
  69. <head>
  70.     <meta charset="UTF-8">
  71.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  72.     <title>单文件上传</title>
  73. </head>
  75. <body>
  76.     <form action=" " method="POST" enctype="multipart/form-data">
  77.         <fieldset>
  78.             <legend>文件上传</legend>
  79.             <!-- 前端设置上传文件大小 -->
  80.             <!-- 设置大小必须写在input：file前面 如果反了就没有效果 -->
  81.             <input type="hidden" name="MAX_FILE_SIZE" value="10000">
  82.             <input type="file" name="my_pic" id="">
  83.             <button>上传</button>
  84.         </fieldset>
  85.     </form>
  86. </body>
  88. </html>

文件移动

  1. <?php
  2.     $tmp_name = $_FILES['my_pic']['tmp_name'] ?? null;
  3.     if ($tmp_name) {
  4.         if (is_uploaded_file($tmp_name)) {
  5.             // 获取原始文件名
  6.             $fileName =  $_FILES['my_pic']['name'];
  7.             // 生成唯一的文件名
  8.             $destFileName = 'file/' . 'PHP中文网' . sha1(time() . mt_rand(1, 1000) . $fileName) . strstr($fileName, '.');
  9.             // 移动文件到正式目录
  10.             move_uploaded_file($tmp_name, $destFileName);
  11.             echo '<p>' . $_FILES['my_pic']['name'] . ':上传成功</p>';
  12.             echo "<img src='{$destFileName}' width='200px'>";
  13.         } else {
  14.             throw new UploadException('不是有效的上传方式', 9);
  15.         }
  16.     }
  17. } catch (UploadException $e) {
  18.     echo $e;
  19. }
  20. ?>
  22. ?>
  23. <!DOCTYPE html>
  24. <html lang="en">
  26. <head>
  27.     <meta charset="UTF-8">
  28.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  29.     <title>单文件上传</title>
  30. </head>
  32. <body>
  33.     <form action=" " method="POST" enctype="multipart/form-data">
  34.         <fieldset>
  35.             <legend>文件上传</legend>
  36.             <!-- 前端设置上传文件大小 -->
  37.             <!-- 设置大小必须写在input：file前面 如果反了就没有效果 -->
  38.             <!-- <input type="hidden" name="MAX_FILE_SIZE" value="10000"> -->
  39.             <input type="file" name="my_pic" id="">
  40.             <button>上传</button>
  41.         </fieldset>
  42.     </form>
  43. </body>
  45. </html>

多文件上传

  1. <?php
  2. // 文件上传自定义异常类
  3. printf('<pre>%s</pre>', print_r($_FILES, true));
  4. class UploadException extends Exception
  5. {
  6.     public function __toString()
  7.     {
  8.         return  <<< UPLOAD
  9.         <table>
  10.         <tr>
  11.         <th>错误编号</th>
  12.         <th>错误信息</th>
  13.         <th>错误文件</th>
  14.         <th>错误行号</th>
  15.         </tr>
  16.         <tr>
  17.         <td>$this->code</td>
  18.         <td>$this->message</td>
  19.         <td>$this->file</td>
  20.         <td>$this->line</td>
  21.         </tr>
  22.         </table>
  23.         <style>
  24.         table {border:1px solid black;border-collapse:collapse;text-align:center;}
  25.         th,td {border:1px solid black;}
  26.         tr:last-of-type {color: red;}
  27.         </style>
  28. UPLOAD;
  29.     }
  30. }
  31. try {
  32.     $error = $_FILES['my_pic']['error'];
  33.     // print_r($error);
  34.     // die;
  35.     if ($error)
  36.         foreach ($error as $vaule) {
  37.             $fileCode = $vaule;
  38.             if ($fileCode && ($fileCode > UPLOAD_ERR_OK)) {
  39.                 switch ($fileCode) {
  40.                     case UPLOAD_ERR_INI_SIZE:
  41.                         throw new UploadException('超过了php.ini中的大小设置', 1);
  42.                         break;
  43.                     case UPLOAD_ERR_FORM_SIZE:
  44.                         throw new UploadException('超过了前端MAX_FILE_SIZE中的大小设置', 2);
  45.                         break;
  46.                     case UPLOAD_ERR_PARTIAL:
  47.                         throw new UploadException('文件只有部分被上传', 3);
  48.                         break;
  49.                     case UPLOAD_ERR_NO_FILE:
  50.                         throw new UploadException('没有文件上传', 4);
  51.                         break;
  52.                     case UPLOAD_ERR_NO_TMP_DIR:
  53.                         throw new UploadException('找不到临时文件夹', 6);
  54.                         break;
  55.                     case UPLOAD_ERR_CANT_WRITE:
  56.                         throw new UploadException('文件写入失败', 7);
  57.                         break;
  58.                     default:
  59.                         throw new UploadException('未知类型错误', 5);
  60.                 }
  61.             }
  62.         };
  63.     // 判断文件类型
  64.     $type = ($_FILES['my_pic']['type']);
  65.     if ($type)
  66.         foreach ($type as  $key => $vaule) {
  67.             $type = strstr($vaule, '/', true);
  68.             $tmp_name = $_FILES['my_pic']['tmp_name'][$key];
  69.             if ($type === 'image') {
  70.                 // 判断上传方式是否正确
  71.                 if (is_uploaded_file($tmp_name)) {
  72.                     $fileName =  $_FILES['my_pic']['name'][$key];
  73.                     // 生成唯一的文件名
  74.                     $destFileName = 'file/' . 'PHP中文网' . sha1(time() . mt_rand(1, 1000) . $fileName) . strstr($fileName, '.');
  75.                     move_uploaded_file($tmp_name, $destFileName);
  76.                     echo '<p>' . $fileName . ':上传成功</p>';
  77.                     echo "<img src='{$destFileName}' width='200px'>";
  78.                 } else {
  79.                     throw new UploadException('不是有效的上传方式', 9);
  80.                 }
  81.             } else {
  82.                 throw new UploadException('不是有效的图片格式', 8);
  83.             }
  84.         }
  85. } catch (UploadException $e) {
  86.     echo $e;
  87. }
  88. ?>
  89. <!DOCTYPE html>
  90. <html lang="en">
  92. <head>
  93.     <meta charset="UTF-8">
  94.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  95.     <title>多文件上传</title>
  96. </head>
  98. <body>
  100.     <form action=" " method="POST" enctype="multipart/form-data">
  101.         <fieldset>
  102.             <legend>多文件上传</legend>
  103.             <!-- 前端设置上传文件大小 -->
  104.             <!-- 设置大小必须写在input：file前面 如果反了就没有效果 -->
  105.             <!-- <input type="hidden" name="MAX_FILE_SIZE" value="270000"> -->
  106.             <input type="file" name="my_pic[]" multiple id="">
  107.             <button>上传</button>
  108.         </fieldset>
  109.     </form>
  110. </body>

文件上传类

  1. <?php
  2. class UploadException extends Exception
  3. {
  4.     public function __toString()
  5.     {
  6.         return  <<< UPLOAD
  7.         <table>
  8.         <tr>
  9.         <th>错误编号</th>
  10.         <th>错误信息</th>
  11.         <th>错误文件</th>
  12.         <th>错误行号</th>
  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>
  21.         <style>
  22.         table {border:1px solid black;border-collapse:collapse;text-align:center;}
  23.         th,td {border:1px solid black;}
  24.         tr:last-of-type {color: red;}
  25.         </style>
  26. UPLOAD;
  27.     }
  28. }
  29. class Upload
  30. {
  31.     private $fileCode;
  32.     private $type;
  33.     private $name;
  34.     private $tmp_name;
  35.     // 正式文件目录名
  36.     private $file_name;
  37.     public function __construct($name)
  38.     {
  39.         $this->file_name = $name;
  40.         // 循环获得上传文件的各个信息
  41.         foreach ($_FILES as $v) {
  42.             $this->fileCode = $v['error'];
  43.             $this->type = $v['type'];
  44.             $this->tmp_name = $v['tmp_name'];
  45.             $this->name = $v['name'];
  46.             $this->get();
  47.             $this->type();
  48.             $this->tmp_name();
  49.         }
  50.     }
  51.     private function get()
  52.     {
  53.         // 根据错误信息抛出相应错误
  54.         if ($this->fileCode && ($this->fileCode > UPLOAD_ERR_OK)) {
  55.             switch ($this->fileCode) {
  56.                 case UPLOAD_ERR_INI_SIZE:
  57.                     throw new UploadException('超过了php.ini中的大小设置', 1);
  58.                     break;
  59.                 case UPLOAD_ERR_FORM_SIZE:
  60.                     throw new UploadException('超过了前端MAX_FILE_SIZE中的大小设置', 2);
  61.                     break;
  62.                 case UPLOAD_ERR_PARTIAL:
  63.                     throw new UploadException('文件只有部分被上传', 3);
  64.                     break;
  65.                 case UPLOAD_ERR_NO_FILE:
  66.                     throw new UploadException('没有文件上传', 4);
  67.                     break;
  68.                 case UPLOAD_ERR_NO_TMP_DIR:
  69.                     throw new UploadException('找不到临时文件夹', 6);
  70.                     break;
  71.                 case UPLOAD_ERR_CANT_WRITE:
  72.                     throw new UploadException('文件写入失败', 7);
  73.                     break;
  74.                 default:
  75.                     throw new UploadException('未知类型错误', 5);
  76.             }
  77.         }
  78.     }
  79.     private function type()
  80.     {
  81.         // 判断文件的格式
  82.         $typ = strstr($this->type, '/', true);
  83.         if ($this->type && ($typ !== 'image')) throw new UploadException('不是有效的图片格式', 8);
  84.     }
  85.     private function tmp_name()
  86.     {
  87.         // 判断文件上传方式是否为POST，正确则把文件转入正式目录
  88.         if ($this->tmp_name) {
  89.             if (is_uploaded_file($this->tmp_name)) {
  90.                 // 生成唯一文件名
  91.                 $destFileName = $this->file_name . 'PHP中文网' . sha1(time() . mt_rand(1, 1000) . $this->name) . strstr($this->name, '.');
  92.                 // 把文件转入正式目录
  93.                 move_uploaded_file($this->tmp_name, $destFileName);
  94.                 echo '<p>' . $this->name . ':上传成功</p>';
  95.                 echo "<img src='{$destFileName}' width='200px'>";
  96.             } else {
  97.                 throw new UploadException('不是有效的上传方式', 9);
  98.             }
  99.         }
  100.     }
  101. }
  103. try {
  104.     printf('<pre>%s</pre>', print_r($_FILES, true));
  105.     $a = new Upload('123456/');
  106. } catch (UploadException $e) {
  107.     echo $e;
  108. }
  109. ?>
  110. <!DOCTYPE html>
  111. <html lang="en">
  113. <head>
  114.     <meta charset="UTF-8">
  115.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  116.     <title>单文件上传</title>
  117. </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 -->
  124.             <!-- 设置大小必须写在input：file前面 如果反了就没有效果 -->
  125.             <!-- <input type="hidden" name="MAX_FILE_SIZE" value="10000"> -->
  126.             <input type="file" name="my_pic1" id="">
  127.             <input type="file" name="my_pic2" id="">
  128.             <input type="file" name="my_pic3" id="">
  129.             <button>上传</button>
  130.         </fieldset>
  131.     </form>
  133.     </form>
  134. </body>
  136. </html>

总结

1.了解了文件上传的错误处理
2.如果想用一个input标签完成多文件上传，使用了较多的流程控制但不知应该如果精简

Correcting teacher：天蓬老师天蓬老师

Correction status：qualified

Teacher's comments：精简, 大多使用自定义函数进行封装
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