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php之文件上传类代码

Jun 13, 2016 am 10:53 AM
php upload code judgment Function suffix size Report an error document of kind Obtain Configuration

[php] 

/*   

单个文件上传   

   

功能   

上传文件   

配置允许的后缀   

配置允许的大小   

   

获取文件后缀   

判断文件的后缀   

报错   

*/    

class UpTool{    

    protected $allowExt = 'jpg,jpeg,gif,bmp,png';    

    protected $maxSize = 1; //1M ,以M为单位    

    

    protected $file = null; //准备储存上传文件信息    

    protected $errno = 0;  //错误代码    

    protected $error = array(    

            0=>'无错',    

            1=>'上传文件大小超出系统限制',    

            2=>'上传文件的大小超出网页表单限制',    

            3=>'文件只有部分被上传',    

            4=>'没有文件被上传',    

            6=>'找不到临时文件夹',    

            7=>'文件写入失败',    

            8=>'不允许的文件后缀',    

            9=>'文件大小超出类的允许范围',    

            10=>'创建目录失败',    

            11=>'文件移动失败'    

        );    

    

    /*   

    上传   

    */    

    public function up($key) {    

        if (!isset($_FILES[$key])) {    

            return false;    

        }    

        $f = $_FILES[$key];    

    

        //检验上传是否成功    

        if ($f['error']) {    

            $this->errno = $f['error'];    

            return false;    

        }    

    

        //获取后缀    

        $ext = $this->getExt($f['name']);    

        //检查后缀    

        if (!$this->isAllowExt($ext)) {    

            $this->errno = 8;    

            return false;    

        }    

        //检查大小    

        if (!$this->isAllowSize($f['size'])) {    

            $this->errno = 9;    

            return false;    

        }    

        //创建目录    

        $dir = $this->mk_dir();    

        if ($dir == false) {    

            $this->errno = 10;    

            return fasle;    

        }    

    

        //生成随机文件名    

        $newname = $this->randName() . '.' .$ext;    

        //$dir = $dir . '/' .$newname;    

        //移动    

        if(!move_uploaded_file($f['tmp_name'], $dir . '/' .$newname)) {    

            $this->errno = 11;    

            return false;    

        }    

        return true;//str_replace(ROOT, '', $dir);    

    }    

    

    public function getErr(){    

        return $this->error[$this->errno];    

    }    

    

    /*   

    parm string $exts 允许的后缀   

    自动添加 允许的后缀,和文件的大小   

    */    

    public function setExt($exts) {    

        $this->allowExt = $exts;    

    }    

    public function setSize($num) {    

        $this->maxSize = $num;    

    }    

    

    

    /*   

        string $file   

    return string $ext 后缀    

    */    

    

    protected function getExt($file) {    

        $tmp = explode('.', $file);    

        return end($tmp);    

    }    

    /*   

    string $ext 文件后缀   

    return bool   

    防止大小写的问题   

    */    

    protected function isAllowExt($ext) {    

        return in_array(strtolower($ext), explode(',', strtolower($this->allowExt))) ;    

            

    }    

    

    /*   

        检查文件的大小   

    */    

    protected function isAllowSize($size) {    

        return $size maxSize *1024*1024;    

    }    

    //按日期创建目录的方法    

    protected function mk_dir() {    

        $dir = 'images/' . date('Ym/d');    

        if(is_dir($dir) || mkdir($dir,0777,true)) {    

            return $dir;    

        } else {    

            return false;    

        }    

    }    

    

    /*   

        生成随机文件名   

    */    

    protected function randName($length = 6) {    

        $str = 'abcdefghijkmnpqrstuvwxyz23456789';    

        return substr(str_shuffle($str),0,$length);    

    }    

    

}  

form 表单

[html]  

   

    用户名:
   

    头像:      

       

 

 

另起页面调用

 

[php]  

require('./UpTool.class.php');    

    

$uptool = new UpTool();    

$uptool->setExt('rar,doc');    

$uptool->setSize(1);    

    

    

if ($uptool->up('pic')) {    

    echo '上传成功';    

} else {    

    echo '失败';    

    echo $uptool->getErr();    

}  

 

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