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天蓬老师Correction status：qualified
Teacher's comments：这个案例做完, 简单的逻辑业务封装, 应该难不倒你了, 恭喜你
Collection
Collection
-包括三个文件
1、文件上传页面。在该页面选择上传文件后，调用文件上传类
2、在文件上传类中，进行判断，上传成功且是图片文件类型的，保存文件并进行预览；否则调用错误类型判断类。
3、错误类型判断类，识别错误类型，列出错误信息。
效果图如下：
<?phprequire_once "upload.php";(new upload)->uploadfile('my_pic');?><!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>文件上传变量$_FILES</title><style>*{margin: 0;padding:0}.container {width:450px;height:150px;margin:50px auto;}</style></head><body><div class="container"><form action="" method="POST" enctype="multipart/form-data"><fieldset><legend>多文件上传</legend><input type="hidden" name="MAX_FILE_SIZE" value="3000000"><!-- 将name属性值能数组的形式提供 --><input type="file" name="my_pic[]" multiple><button>上传</button></fieldset></form></div></body></html>
<?phprequire_once "error.php";class upload{protected $uploadFilename;public function uploadfile($name){$this->uploadFilename=$name;if (!empty($_FILES[$this->uploadFilename])){foreach ($_FILES[$this->uploadFilename]['error'] as $key => $error) {$fileType=strstr($_FILES[$this->uploadFilename]['type'][$key], '/', true);// 原始文件名$originalFileName = $_FILES[$this->uploadFilename]['name'][$key];if ($error === UPLOAD_ERR_OK && $fileType === 'image') {// 临时文件名$tmpFileName = $_FILES[$this->uploadFilename]['tmp_name'][$key];// 目标文件名$destFileName = 'uploads/'. md5(time().mt_rand(1,1000)).strstr($originalFileName, '.');// 移动文件move_uploaded_file($tmpFileName, $destFileName);// 预览echo "<img src='{$destFileName}' width='200'>","{$originalFileName} 上传成功！",'<br>';}else{(new UploadException)->judgerror($error,$fileType);echo "{$originalFileName} 上传失败！",'<br>';}}}}}?>
总结：
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