PHP for file download and multi-file upload

File Download:

Html:

PHP Processing:
<?php $filename =$_get[' filename '];//set the download filename header (' content-disposition:attachment;filename= '. BaseName ($ filename); header (' Content-length: ' FileSize ($filename)); ReadFile ($filename);

File Upload:
HTML code:

PHP Code:
common.func.php
<?php/** * Get File extension * @param string $filename * @return string */function getext ($filename) {return Strtolower (PathInfo ( $filename, Pathinfo_extension));} /** * Generates a unique string * @return string */function getuniname () {return MD5 (Uniqid (Microtime (True), true));}

upload.func1.php
<?php/** * Build upload file information * @return unknown */function getFiles () {$i =0;foreach ($_files as $file) {if (is_string ($file [' name ' ]) {$files [$i]= $file; $i + +;} ElseIf (Is_array ($file [' name '])) {foreach ($file [' name '] as $key = + $val) {$files [$i] [' name ']= $file [' name '] [$key];$ files[$i] [' type ']= $file [' type '] [$key]; $files [$i] [' Tmp_name ']= $file [' tmp_name '] [$key]; $files [$i] [' Error ']= $file [' ERROR '] [$key]; $files [$i] [' Size ']= $file [' Size '] [$key]; $i + +;}}} return $files;} /** * For single-file, multiple single-file, multiple-file uploads * @param array $fileInfo * @param string $path * @param string $flag * @param number $maxSize * @param array $allowExt * @return string */function uploadfile ($fileInfo, $path = './uploads ', $flag =true, $maxSize =1048576 , $allowExt =array (' jpeg ', ' jpg ', ' png ', ' gif ')) {//$flag =true;//$allowExt =array (' jpeg ', ' jpg ', ' gif ', ' png ');//$ maxsize=1048576;//1m//Judgment Error number if ($fileInfo [' Error ']===upload_err_ok) {//Detect upload to get small if ($fileInfo [' Size ']> $maxSize) {$ res[' mes ']= $fileInfo [' name ']. ' Upload file too large ';} $ext =getext ($fileInfo [' name ']);//detects the file type of the uploaded file if (!in_array ($ext, $allowExt)) {$res [' mes ']= $fileInfo [' name ']. ' illegal file type ';} Detects if the picture type is true if ($flag) {if (!getimagesize ($fileInfo [' tmp_name ')]) {$res [' mes ']= $fileInfo [' name ']. ' Not a real picture type ';}} Detects if the file is uploaded via HTTP post (!is_uploaded_file ($fileInfo [' tmp_name ')]) {$res [' mes ']= $fileInfo [' name ']. The file is not uploaded via HTTP post; if ($res) return $res;//$path = './uploads '; if (!file_exists ($path)) {mkdir ($path, 0777,true); chmod ($path, 0777);} $uniName =getuniname (); $destination = $path. ' /'. $uniName. '. $ext, if (!move_uploaded_file ($fileInfo [' Tmp_name '], $destination) {$res [' mes ']= $fileInfo [' name ']. File move failed ';} $res [' mes ']= $fileInfo [' name ']. ' Upload success '; $res [' Dest ']= $destination; return $res;} else{//Match error message switch ($fileInfo [' ERROR ']) {Case 1: $res [' mes '] = ' upload file exceeds the value of upload_max_filesize option in PHP config file '; Break;case 2 : $res [' mes '] = ' exceeds the size of the form max_file_size limit '; Break;case 3: $res [' mes '] = ' file part is uploaded '; break;case 4: $res [' mes '] = ' no option to upload file '; Break;case 6: $res [' mes '] = ' No temporary directory found '; break;case 7:case 8: $res [' mes '] = ' system error '; return $res;}}

doaction5.php
<?php//print_r ($_files); Header ("Content-type:text/html;charset=utf-8"); require_once ' upload.func1.php '; Require_once ' common.func.php '; $files =getfiles ();//Print_r ($files); foreach ($files as $fileInfo) {$res =uploadfile ($ FileInfo); Echo $res [' mes '], ' <br/> '; $uploadFiles []= $res [' dest '];} $uploadFiles =array_values (Array_filter ($uploadFiles));p Rint_r ($uploadFiles);

The above is implemented by the function, the download package becomes the class:
Html:

upload.class.php
<?php class upload{protected $fileName;p rotected $maxSize;p rotected $allowMime;p rotected $allowExt;p rotected $ uploadpath;protected $imgFlag;p rotected $fileInfo;p rotected $error;p rotected $ext,/** * @param string $fileName * @param String $uploadPath * @param string $imgFlag * @param number $maxSize * @param array $allowExt * @param array $allowMime */ Public function __construct ($fileName = ' MyFile ', $uploadPath = './uploads ', $imgFlag =true, $maxSize =5242880, $allowExt = Array (' JPEG ', ' jpg ', ' png ', ' gif '), $allowMime =array (' image/jpeg ', ' image/png ', ' image/gif ')) {$this->filename=$ FileName, $this->maxsize= $maxSize, $this->allowmime= $allowMime, $this->allowext= $allowExt, $this Uploadpath= $uploadPath, $this->imgflag= $imgFlag $this->fileinfo=$_files[$this->filename];} /** * Detect error Uploading File * @return Boolean */protected function CheckError () {if (!is_null ($this->fileinfo)) {if ($this, fileinfo[' ERROR ']>0) {switch ($this->fileinfo[' error ') {Case 1: $this->error= ' exceeded the PHP config file Upload_maxThe value of the _filesize option '; Break;case 2: $this->error= ' exceeds the value max_file_size set in the form '; Break;case 3: $this->error= ' file is partially uploaded '; Break;case 4: $this->error= ' no option to upload files '; Break;case 6: $this->error= ' no temporary directory found '; Break;case 7: $this->error= ' File not writable '; Break;case 8: $this->error= ' due to PHP extension interrupt file Upload '; return false;} Else{return true;}} else{$this->error= ' file error '; return false;}} /** * Detects the size of the uploaded file * @return boolean */protected function Checksize () {if ($this->fileinfo[' size ']> $this->maxsize) {$this->error= ' upload file too large '; return false;} return true;} /** * Detection Extension * @return Boolean */protected function Checkext () {$this->ext=strtolower (pathinfo ($this->fileinfo[' Name '],pathinfo_extension)), if (!in_array ($this->ext, $this->allowext)) {$this->error= ' disallowed extension '; return false;} return true;} /** * Detection File Type * @return Boolean */protected function Checkmime () {if (!in_array ($this->fileinfo[' type '], $this- Allowmime) {$this->error= ' disallowed file type '; return false;} return true;} /** * Detect if it is a real picture * @return Boolean */protected function checktrueimg () {if ($this->imgflag) {if ([email protected] ($this->fileinfo[' Tmp_name '])) {$ This->error= ' is not a real picture '; return false;} return true;}} /** * detects if an HTTP post is uploaded to the * @return Boolean */protected function Checkhttppost () {if (!is_uploaded_file ($this- fileinfo[' Tmp_name ') {$this->error= ' file is not uploaded via HTTP post '; return false;} return true;} /** * Display Error */protected function ShowError () {exit (' <span style= ' color:red ' > '. $this->error. ' </span> ');} /** * Detection directory does not exist create */protected function Checkuploadpath () {if (!file_exists ($this->uploadpath)) {mkdir ($this, uploadpath,0777,true);}} /** * Generates a unique string * @return string */protected function Getuniname () {return MD5 (Uniqid (Microtime (True), true));} /** * Upload file * @return string */public function UploadFile () {if ($this->checkerror () && $this->checksize () && $this->checkext () && $this->checkmime () && $this->checktrueimg () &&$ This->checkhttppost ()) {$this->checkuploadpath (); $This->uniname= $this->getuniname (); $this->destination= $this->uploadpath. ' /'. $this->uniname. '. $this->ext;if (@move_uploaded_file ($this->fileinfo[' tmp_name '), $this->destination) {return $this Destination;} else{$this->error= ' file move failed '; $this->showerror ();}} else{$this->showerror ();}}}

doaction6.php
<?php header (' Content-type:text/html;charset=utf-8 '); require_once ' upload.class.php '; $upload =new upload (' MyFile1 ', ' Imooc '); $dest = $upload->uploadfile (); Echo $dest;


PHP for file download and multi-file upload