PHP File Upload class

<?phpclass Upload {private $error;    Private $destination;    Private $fileInfo;    Private $uploadDir;    Private $maxFileSize;    Private $allowExt;    Private $checkImage; function __construct ($fileInfo, $uploadDir = './uploads ', $maxFileSize = 1024x768 * 1024x768 * 1, $allowEx  t = array (' jpg ', ' gif ', ' PNG ', ' BMP ', ' jpeg '), $checkImage = true, $allowMime = Array (' Image/gif ',        ' Image/jpeg ', ' image/png ') {$this->fileinfo = $fileInfo;        $this->uploaddir = $uploadDir;        $this->maxfilesize = $maxFileSize;        $this->allowext = $allowExt;        $this->checkimage = $checkImage;    $this->allowmime = $allowMime;            /*** * Processing Upload file * @return String */Public Function UploadFile () {if (! $this->fileinfo) {            $this->error = ' File information does not exist ';        return $this->error; if ($this->checkerror () && $this->checkimagetype () && $tHis->checkmaxfilesize () && $this->checkallowext () && $this->checkpostupload () &&am P            $this->checkmime ()) {//Determine if the folder exists $this->checkuploaddir (); Generates a unique file name $destination = $this->uploaddir. ‘/‘ . $this->builduniqueid (). ‘.‘ .            $this->getext (); if (@move_uploaded_file ($this->fileinfo[' tmp_name '), $destination) {$this->destination = $destinati                On            return $this->destination;            } else {$this->error = ' Move upload file failed ';        } return $this->error;    } return $this->error;        } Private Function CheckError () {if ($this->fileinfo[' error '] = = UPLOAD_ERR_OK) {return true; } $this->error = ' upload error, error code: '.        $this->fileinfo[' ERROR '];    return false; } Private Function Builduniqueid () {return MD5 (Uniqid (Microtime (True), true));    } Private Function Checkuploaddir () {if (!file_exists ($this->uploaddir)) {mkdir ($this->up            Loaddir, 0777, true);        chmod ($this->uploaddir, 0777); }} Private Function Checkallowext () {if (In_array ($this->getext (), $this->allowext)) {RET        Urn true;        } $this->error = ' file of this type cannot be uploaded ';    return false;            } Private Function Checkmaxfilesize () {if ($this->maxfilesize > $this->fileinfo[' size ') {        return true;        } $this->error = ' the size of the uploaded file has exceeded the limit ';    return false; } Private Function Checkimagetype () {if ($this->checkimage) {if ($this->checkallowext () &            & GetImageSize ($this->fileinfo[' Tmp_name ')) {return true;            } $this->error = ' upload is not a picture ';        return false;    } return true; } Private Function Checkpostupload () {if (Is_uploaded_file ($this->fileinfo[' Tmp_name ')) {return true;        } $this->error = ' is not a post-uploaded file ';    return false; } Private Function Checkmime () {if (In_array ($this->getmime (), $this->allowmime)) {return Tru        E        } $this->error = ' MIME type incorrect ';    return false; } Private Function Getmime () {if ($imageInfo = getimagesize ($this->fileinfo[' Tmp_name ')) {retur        n $imageInfo [' MIME '];    } return false;    } Private Function Getext () {return strtolower (pathinfo ($this->fileinfo[' name '], pathinfo_extension)); }}

　　

PHP File Upload class