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PHP文件上传综合示例
大A
Original
714 people have browsed it

HTML代码

  1. <?php
  2. require('fileup.php');
  3. if ($_FILES) :
  4.     $file = new Fileup($_FILES, 'file');
  5.     $result = $file->upload('uploadfile', 'image');
  6.     file_ex($result);
  7.     show($result);
  8. endif;
  9. ?>
  10. <!DOCTYPE html>
  11. <html lang="en">
  13. <head>
  14.     <meta charset="UTF-8">
  15.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  16.     <title>文件上传</title>
  17. </head>
  19. <body>
  21.     <form action="" method="post" enctype="multipart/form-data">
  22.         <fieldset>
  23.             <legend>单文件上传</legend>
  24.             <input type="hidden" name="MAX_FILE_SIZE" value="700000">
  25.             <input type="file" name="file[]">
  26.             <input type="file" name="file[]">
  27.             <input type="file" name="file[]">
  28.             <input type="file" name="file[]">
  29.             <button>上传</button>
  30.         </fieldset>
  31.     </form>
  32.     <form action="" method="post" enctype="multipart/form-data">
  33.         <fieldset>
  34.             <legend>多文件上传</legend>
  35.             <input type="hidden" name="MAX_FILE_SIZE" value="1000000">
  36.             <input type="file" name="file[]" multiple>
  37.             <button>上传</button>
  38.         </fieldset>
  39.     </form>
  40. </body>
  42. </html>

文件上传类和异常处理类

  1. <?php
  3. /**
  4.  * 文件上传类
  5.  */
  6. class Fileup
  7. {
  8.     private $file_name, $file_tmp, $file_type, $file_error;
  9.     public function __construct($file, $name)
  10.     {
  11.         $this->file_name = $file[$name]['name'];
  12.         $this->file_type = $file[$name]['type'];
  13.         $this->file_tmp = $file[$name]['tmp_name'];
  14.         $this->file_error = $file[$name]['error'];
  15.     }
  16.     /**
  17.      * 上传文件到指定目录,并可以过滤上传的文件类型
  18.      *
  19.      * @param [string] $path    上传文件在服务器保存的路径
  20.      * @param [string] $type    指定上传的文件类型
  21.      * @return array    返回关联二维数组[['name','error','url']...]
  22.      */
  23.     public function upload($path, $type = null)
  24.     {
  25.         $result = [];
  26.         foreach ($this->file_error as $key => $value) {
  27.             if ($value === 0) :
  28.                 if ($type && strstr($this->file_type[$key], '/', true) !== $type) :
  29.                     $result[] = [
  30.                         'name' => $this->file_name[$key],
  31.                         'error' => 8,
  32.                         'url' => null
  33.                     ];
  34.                     continue;
  35.                 endif;
  36.                 $a = $this->file_tmp[$key];
  37.                 $b = "$path/" . md5(time() + rand(0, 999))
  38.                     . '.' . pathinfo($this->file_name[$key])['extension'];
  39.                 if (move_uploaded_file($a, $b)) :
  40.                     $result[] = [
  41.                         'name' => $this->file_name[$key],
  42.                         'error' => UPLOAD_ERR_OK,
  43.                         'url' => $b
  44.                     ];
  45.                 else :
  46.                     $result[] = [
  47.                         'name' => $this->file_name[$key],
  48.                         'error' => UPLOAD_ERR_CANT_WRITE,
  49.                         'url' => null
  50.                     ];
  52.                 endif;
  53.             else :
  54.                 $result[] = [
  55.                     'name' => $this->file_name[$key],
  56.                     'error' => $value,
  57.                     'url' => null
  58.                 ];
  59.             endif;
  60.         }
  61.         return $result;
  62.     }
  63. }
  64. /**
  65.  * 文件上传异常类
  66.  */
  67. class File_exception extends Exception
  68. {
  69.     public function __toString()
  70.     {
  71.         return '错误代码(' . $this->code . ')，' . $this->message . '。<hr>';
  72.     }
  73. }
  75. //返回异常并显示出来
  76. function file_ex($result)
  77. {
  78.     foreach ($result as $value) {
  79.         try {
  80.             switch ($value['error']) {
  81.                 case UPLOAD_ERR_INI_SIZE:
  82.                     throw new File_exception('上传的文件超过了 php.ini 中 upload_max_filesize 选项限制的值', 1);
  83.                     break;
  84.                 case UPLOAD_ERR_FORM_SIZE:
  85.                     throw new File_exception('上传文件的大小超过了 HTML 表单中 MAX_FILE_SIZE 选项指定的值', 2);
  86.                     break;
  87.                 case UPLOAD_ERR_PARTIAL:
  88.                     throw new File_exception('文件只有部分被上传', 3);
  89.                     break;
  90.                 case UPLOAD_ERR_NO_TMP_DIR:
  91.                     throw new File_exception('找不到临时文件夹', 6);
  92.                     break;
  93.                 case UPLOAD_ERR_CANT_WRITE:
  94.                     throw new File_exception('文件写入失败', 7);
  95.                     break;
  96.                 case 8:
  97.                     throw new File_exception('文件类型错误', 8);
  98.                     break;
  99.             }
  100.         } catch (File_exception $e) {
  101.             echo $value['name'] . '：' . $e;
  102.         }
  103.     }
  104. }
  106. //预览上传成功的图片
  107. function show($result)
  108. {
  109.     foreach ($result as $value) {
  110.         if ($value['error'] === UPLOAD_ERR_OK) :
  111.             $name = $value['name'];
  112.             $v_url = $value['url'];
  113.             $html = <<< hh
  114.             <div style="width:22%;float:left;margin-right:3%"><div>$name</div><img style="width:100%" src="$v_url" alt=""></div>
  115.             hh;
  116.             echo $html;
  117.         endif;
  118.     }
  119.     echo '<div style="clear:both"></div>';
  120. }
Correcting teacher：天蓬老师天蓬老师

Correction status：qualified

Teacher's comments：那个文件处理类的构造方法参数, 可以考虑使用剩余参数, 或extract()进行处理, 以简化代码
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