Specific analysis of PHP general file upload class

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Specific analysis of PHP general file upload class_PHP tutorial

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Jul 15, 2016 pm 01:29 PM

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We will explain it to you in detail belowFor example: the user can upload an exhibit and a thumbnail for the exhibit, then the thumbnail file restriction type may be jpg, gif, png, etc., while the exhibit file limit types may be mov, avi, mpeg, etc., the image size may be limited to 100KB, and the audio and video size may be limited to 2MB. The class code is as follows:

<ol class="dp-xml">
<li class="alt"><span><span>class Upload  </span></span></li>
<li class=""><span>{  </span></li>
<li class="alt"><span>    public $InputName;    // 文件上传域控件名  </span></li>
<li class=""><span>      </span></li>
<li class="alt"><span>    /**    </span></li>
<li class=""><span>    * 允许上传的文件类型  </span></li>
<li class="alt"><span>    * 形式为 array('image/jpeg', 'image/png', 'image/gif') 或包含此类数组的数组（与每个上传域控件对应）  </span></li>
<li class=""><span>    */  </span></li>
<li class="alt"><span>    public $FileType;  </span></li>
<li class=""><span>      </span></li>
<li class="alt"><span>    /**    </span></li>
<li class=""><span>    * 最大上传文件大小（单位：byte）  </span></li>
<li class="alt">
<span>    * 形式为 array('image' =</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> $size, 'audio' =</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> $size)（表示每种应用文件类型所对应的上传大小） 或包含此类数组的数组（与每个上传域控件对应）或一数值（表示所有上传文件均限制在此大小之下）  </span>
</li>
<li class=""><span>    */  </span></li>
<li class="alt"><span>    public $FileMaxSize;   </span></li>
<li class=""><span>      </span></li>
<li class="alt"><span>    public $FileSavePath;  // 文件保存路径（可为数组形式，表示不同上传域上传文件到不同的路径）  </span></li>
<li class=""><span>    public $FileSaveName;  // 文件保存名（不包含后缀名）（可为数组形式，表示不同上传域上传文件保存的不同名称）  </span></li>
<li class="alt"><span>    public $NoteFileFalse; // 文件错误提示  </span></li>
<li class=""><span>    public $NoteFileType;  // 文件类型不符提示  </span></li>
<li class="alt"><span>    public $NoteFileSize;  // 文件大小超出提示  </span></li>
<li class=""><span>      </span></li>
<li class="alt"><span>    /* 上传文件并返回文件名信息（包含后缀名） */  </span></li>
<li class=""><span>    public function UploadFile()  </span></li>
<li class="alt"><span>    {  </span></li>
<li class="">
<span>        $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>CheckFile(); // 检验文件  </span>
</li>
<li class="alt">
<span>        $</span><span class="attribute"><font color="#ff0000">file</font></span><span> = $_FILES[$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>InputName];  </span>
</li>
<li class="">
<span>        $</span><span class="attribute"><font color="#ff0000">file_save_full_name</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">array</font></span><span>(); // 文件保存名（包含后缀名）  </span>
</li>
<li class="alt"><span>          </span></li>
<li class="">
<span>        foreach ($file['name'] as $</span><span class="attribute"><font color="#ff0000">key</font></span><span> =</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> $name)  </span>
</li>
<li class="alt"><span>        {  </span></li>
<li class=""><span>            if (!empty($name)) // 文件不为空  </span></li>
<li class="alt"><span>            {  </span></li>
<li class=""><span>                /* 确定文件保存路径 */  </span></li>
<li class="alt">
<span>                if (is_array($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>FileSavePath))  </span>
</li>
<li class=""><span>                {  </span></li>
<li class="alt">
<span>                    $</span><span class="attribute"><font color="#ff0000">file_save_path</font></span><span> = $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>FileSavePath[$key];  </span>
</li>
<li class=""><span>                }  </span></li>
<li class="alt"><span>                else   </span></li>
<li class=""><span>                {  </span></li>
<li class="alt">
<span>                    $</span><span class="attribute"><font color="#ff0000">file_save_path</font></span><span> = $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>FileSavePath;  </span>
</li>
<li class=""><span>                }  </span></li>
<li class="alt"><span>                  </span></li>
<li class=""><span>                /* 确定文件保存名（不包含后缀名） */  </span></li>
<li class="alt">
<span>                if (is_array($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>FileSaveName))  </span>
</li>
<li class=""><span>                {  </span></li>
<li class="alt">
<span>                    $</span><span class="attribute"><font color="#ff0000">file_save_name</font></span><span> = $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>FileSaveName[$key];  </span>
</li>
<li class=""><span>                }  </span></li>
<li class="alt"><span>                else   </span></li>
<li class=""><span>                {  </span></li>
<li class="alt">
<span>                    $</span><span class="attribute"><font color="#ff0000">file_save_name</font></span><span> = $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>FileSaveName;  </span>
</li>
<li class=""><span>                }  </span></li>
<li class="alt"><span>                  </span></li>
<li class=""><span>                /* 开始保存 */  </span></li>
<li class="alt">
<span>                $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>CreatePath($file_save_path); // 如果路径不存在则创建路径  </span>
</li>
<li class="">
<span>                move_uploaded_file($file["tmp_name"][$key], $file_save_path . $file_save_name . $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>GetSuffix($file['name'][$key]));  </span>
</li>
<li class="alt">
<span>                $file_save_full_name[] = $file_save_name . $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>GetSuffix($file['name'][$key]);  </span>
</li>
<li class=""><span>            }  </span></li>
<li class="alt"><span>            else   </span></li>
<li class=""><span>            {  </span></li>
<li class="alt"><span>                $file_save_full_name[] = null;  </span></li>
<li class=""><span>            }  </span></li>
<li class="alt"><span>        }  </span></li>
<li class=""><span>          </span></li>
<li class="alt"><span>        unlink($file);  </span></li>
<li class=""><span>          </span></li>
<li class="alt"><span>        /* 如果只有一个文件，则返回单个文件名 */  </span></li>
<li class=""><span>        if (count($file_save_full_name) == 1)  </span></li>
<li class="alt"><span>        {  </span></li>
<li class="">
<span>            $</span><span class="attribute"><font color="#ff0000">file_save_full_name</font></span><span> = $file_save_full_name[0];  </span>
</li>
<li class="alt"><span>        }  </span></li>
<li class=""><span>          </span></li>
<li class="alt"><span>        return $file_save_full_name;  </span></li>
<li class=""><span>    }  </span></li>
<li class="alt"><span>      </span></li>
<li class=""><span>    /* 检验文件 */  </span></li>
<li class="alt"><span>    private function CheckFile()  </span></li>
<li class=""><span>    {  </span></li>
<li class="alt">
<span>        $</span><span class="attribute"><font color="#ff0000">file</font></span><span> = $_FILES[$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>InputName];  </span>
</li>
<li class=""><span>          </span></li>
<li class="alt">
<span>        foreach ($file['name'] as $</span><span class="attribute"><font color="#ff0000">key</font></span><span> =</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> $name)  </span>
</li>
<li class=""><span>        {  </span></li>
<li class="alt"><span>            if (!empty($name)) // 文件不为空  </span></li>
<li class=""><span>            {  </span></li>
<li class="alt">
<span>                $</span><span class="attribute"><font color="#ff0000">type</font></span><span>  = $file['type'][$key];  </span>
</li>
<li class="">
<span>                $</span><span class="attribute"><font color="#ff0000">size</font></span><span>  = $file['size'][$key];  </span>
</li>
<li class="alt">
<span>                $</span><span class="attribute"><font color="#ff0000">error</font></span><span> = $file['error'][$key];  </span>
</li>
<li class=""><span>                  </span></li>
<li class="alt"><span>                /* 确定允许上传文件类型列表 */  </span></li>
<li class="">
<span>                if (is_array($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>FileType[0]))  </span>
</li>
<li class="alt"><span>                {  </span></li>
<li class="">
<span>                    $</span><span class="attribute"><font color="#ff0000">file_type</font></span><span> = $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>FileType[$key];  </span>
</li>
<li class="alt"><span>                }  </span></li>
<li class=""><span>                else   </span></li>
<li class="alt"><span>                {  </span></li>
<li class="">
<span>                    $</span><span class="attribute"><font color="#ff0000">file_type</font></span><span> = $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>FileType;  </span>
</li>
<li class="alt"><span>                }  </span></li>
<li class=""><span>                  </span></li>
<li class="alt"><span>                /* 确定最大上传文件大小 */  </span></li>
<li class="">
<span>                if (is_array($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>FileMaxSize))  </span>
</li>
<li class="alt"><span>                {  </span></li>
<li class="">
<span>                    $</span><span class="attribute"><font color="#ff0000">file_max_size_key</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">explode</font></span><span>('/', $type);  </span>
</li>
<li class="alt">
<span>                    $</span><span class="attribute"><font color="#ff0000">file_max_size_key</font></span><span> = $file_max_size_key[0];  </span>
</li>
<li class="">
<span>                    if (is_array($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>FileMaxSize[0]))  </span>
</li>
<li class="alt"><span>                    {  </span></li>
<li class="">
<span>                        $</span><span class="attribute"><font color="#ff0000">file_max_size</font></span><span> = $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>FileMaxSize[$key][$file_max_size_key];  </span>
</li>
<li class="alt"><span>                    }  </span></li>
<li class=""><span>                    else   </span></li>
<li class="alt"><span>                    {  </span></li>
<li class="">
<span>                        $</span><span class="attribute"><font color="#ff0000">file_max_size</font></span><span> = $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>FileMaxSize[$file_max_size_key];  </span>
</li>
<li class="alt"><span>                    }  </span></li>
<li class=""><span>                }  </span></li>
<li class="alt"><span>                else   </span></li>
<li class=""><span>                {  </span></li>
<li class="alt">
<span>                    $</span><span class="attribute"><font color="#ff0000">file_max_size</font></span><span> = $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>FileMaxSize;  </span>
</li>
<li class=""><span>                }  </span></li>
<li class="alt"><span>                  </span></li>
<li class=""><span>                /* 文件错误 */  </span></li>
<li class="alt">
<span>                if ($error </span><span class="tag"><strong><font color="#006699">></font></strong></span><span> 0)  </span>
</li>
<li class=""><span>                {  </span></li>
<li class="alt">
<span>                    die($name . $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>NoteFileFalse);  </span>
</li>
<li class=""><span>                }  </span></li>
<li class="alt"><span>                  </span></li>
<li class=""><span>                /* 文件大小超过最大上传文件大小 */  </span></li>
<li class="alt">
<span>                if ((!is_null($file_max_size) && $size </span><span class="tag"><strong><font color="#006699">></font></strong></span><span> $file_max_size) || ($</span><span class="attribute"><font color="#ff0000">size</font></span><span> == 0))  </span>
</li>
<li class=""><span>                {  </span></li>
<li class="alt">
<span>                    die($name . $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>NoteFileSize);  </span>
</li>
<li class=""><span>                }  </span></li>
<li class="alt"><span> </span></li>
<li class=""><span>                    /* 文件类型不符 */  </span></li>
<li class="alt"><span>                if (!in_array($type, $file_type))  </span></li>
<li class=""><span>                {  </span></li>
<li class="alt">
<span>                    die($name . $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>NoteFileType);  </span>
</li>
<li class=""><span>                }  </span></li>
<li class="alt"><span>            }  </span></li>
<li class=""><span>        }  </span></li>
<li class="alt"><span>    }  </span></li>
<li class=""><span>      </span></li>
<li class="alt"><span>    /* 获取文件后缀名 */  </span></li>
<li class=""><span>    private function GetSuffix($fileName)  </span></li>
<li class="alt"><span>    {  </span></li>
<li class=""><span>        return substr($fileName, strrpos($fileName, "."));  </span></li>
<li class="alt"><span>    }  </span></li>
<li class=""><span> </span></li>
<li class="alt"><span>    /* 如果路径不存在则创建路径 */  </span></li>
<li class=""><span>    private function CreatePath($filePath)  </span></li>
<li class="alt"><span>    {  </span></li>
<li class=""><span>        if (!file_exists($filePath))  </span></li>
<li class="alt"><span>        {  </span></li>
<li class=""><span>            mkdir($filePath);  </span></li>
<li class="alt"><span>        }  </span></li>
<li class=""><span>    }  </span></li>
<li class="alt"><span>} </span></li>
</ol>

How to use the PHP general file upload class: Next, use the example given at the beginning of this article to illustrate the calling method of this class (haha, the call is very convenient):

$upload_obj = new Upload(); // File upload object

$upload_obj->InputName = 'upload_test'; // File upload domain control name

$upload_obj->FileType = array(array('image/jpeg' , 'image/png'), array('audio/mpeg', 'video/x-msvideo')); // File types allowed to be uploaded

$upload_obj->FileMaxSize = array('image' => ; 100 * 1024, 'audio' => 2 * 1024 * 1024, 'video' => 2 * 1024 * 1024);

$upload_obj->FileSavePath = array('upload/files/s/' , 'upload/files/z/');

$upload_obj->FileSaveName = time();

$upload_obj->NoteFileFalse = 'File error';

$upload_obj->NoteFileType = 'File type does not match';

$upload_obj->NoteFileSize = 'File size exceeds';

$file_save_full_name = $upload_obj->UploadFile(); // Upload and get the full name of the file (base name plus extension name) (if there are multiple files, it is in the form of an array) (the full name is used to store information in the database)

Summary: This can easily achieve several file uploads. In fact, the PHP general file upload class ultimately uses PHP When uploading group files, please note that don’t forget to add [] after the name of the control. The advantage of this is that when you encounter multiple file uploads, you don’t need to loop in the call layer or process the uploads one by one. Our application also Hence the ease.

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