php文件上传类的分享

<?php$upload = new UpLoad();$upload->uploadFile('fm');/*打印错误信息*/// var_dump($upload->errorNumber);// var_dump($upload->errorInfo);class UpLoad{  //文件上传路径  protected $path = 'upload/';  //允许文件上传的后缀  protected $allowSuffix = ['jpg','jpeg',  'gif','wbmp','png'];  //mime类型   protected $allowMime =['image/jpg','image/jpeg',  'image/gif','image/wbmp','image/png'];  //允许上传的大小  protected $maxSize = 2000000;  //是否启用默认的前缀  protected $isRandName =true ;  //文件的前缀  protected $prefix = 'up_';  //错误号和错误信息  protected $errorNumber;  protected $errorInfo;  //文件的信息  //文件名  protected $oldName;  //文件的后缀  protected $suffix;  //文件的大小  protected $size;  //文件的mime  protected $mime;  //文件的临时文件的路径  protected $tmpName;  //文件新名字  protected $newName;    //构造方法  //因为成员属性比较多就用数组来显示  public function __construct($arr =[]){    foreach ($arr as $key=>$value){      $this->setOption($key,$value);    }  }  //判断$key是不是我的成员属性，如果是就设置  protected function setOption($key,$value){    //得到所有的成员属性    $keys = array_keys(get_class_vars(__CLASS__));    if(in_array($key, $keys)){      $this->$key = $value;    }  }  //文件上传函数  //key 就是input框中的name属性值  public function uploadFile($key){    //判断有没有设置路径 path    if(empty($this->path)){      $this->setOption('errorNumber',-1 );      return false;    }    //判断该路径是否存在是否可写    if (!$this->check()){      $this->setOption('errorNumber', -2);      return false;     }    //判断$_FILES里面的error信息是否为0，如果为0则说明文件信息在服务器端可以直接获取，提取信息保存到成员属性中    $error = $_FILES[$key]['error'];    if($error){      $this->setOption('errorNumber', -3);      return false;    }else {      //提取文件相关信息并且保存到成员属性中      $this->getFileInfo($key);    }    //判断文件的大小、mime、后缀是否符合     if(!$this->checkSize() || !$this->checkMime()|| !$this->checkSuffix()){       return false;     }    //得到新的文件名字    $this->newName = $this->createNewName();    //判断是否是上传文件，并且是移动上传文件    if(is_uploaded_file($this->tmpName)){      if(move_uploaded_file($this->tmpName, $this->path.$this->newName)){        return $this->path.$this->newName;      }else {        $this->setOption('errorNumber', -7);        return false;      }    }else{      $this->setOption('errorNumber', -6);      return false;    }  }  //检测文件夹是否存在，是否可写  protected function check(){    //文件夹不存在或者不是目录。创建文件夹    if(!file_exists($this->path) ||!is_dir($this->path)){      return mkdir($this->path,0777,true);    }    //判断文件是否可写    if(!is_writeable($this->path)){      return chmod($this->path, 0777);    }    return true;  }  //根据key得到文件信息  protected function getFileInfo($key){    //得到文件的名字    $this->oldName = $_FILES[$key]['name'];    //得到文件的mime类型    $this->mime = $_FILES[$key]['type'];    //得到文件的临时文件    $this->tmpName = $_FILES[$key]['tmp_name'];    //得到文件大小    $this->size = $_FILES[$key]['size'];    //得到文件后缀    $this->suffix = pathinfo($this->oldName)['extension'];  }  //判断文件大小  protected function checkSize(){    if($this->size > $this->maxSize){      $this->setOption('errorNumber', -3);      return false;    }    return true;  }  //判断mime类型  protected function checkMime(){    if(!in_array($this->mime, $this->allowMime)){      $this->setOption('errorNumber', -4);      return false;    }    return true;  }  //判断后缀  protected function checkSuffix(){    if(!in_array($this->suffix, $this->allowSuffix)){      $this->setOption('errorNumber', -5);      return false;    }    return true;  }  //创建新名字  protected function createNewName(){    if($this->isRandName){      $name = $this->prefix.uniqid().'.'.$this->suffix;    }else {      $name = $this->prefix.$this->oldName;    }    return $name;  }  public function __get($name){    if($name == 'errorNumber'){      return $this->errorNumber;    }elseif ($name == 'errorInfo'){      return $this->getErrorInfo();    }  }  protected function getErrorInfo(){    switch ($this->errorNumber){    case -1:      $str = '文件路径没有设置';      break;    case -2:      $str = '文件不是目录或者不可写';      break;    case -3:      $str = '文件超过指定大小';      break;    case -4:      $str = 'mime类型不符合';      break;    case -5:      $str = '文件后缀不符合';      break;    case -6:      $str = '不是上传文件';      break;    case -7:      $str = '移动失败';      break;    case 1:      $str = '超出ini设置大小';      break;    case 2:      $str = '超出html表单大小';      break;    case 3:      $str = '文章只有部分上传';      break;    case 4:      $str = '没有文件上传';      break;    case 6:      $str = '找不到临时文件';      break;    case 7:      $str = '文件写入失败';      break;    }    return $str;  }}

<!doctype html><html lang="en"><head>  <meta charset="UTF-8" />  <title>文件上传</title></head><body><form action="UpLoad.php" method="post" enctype="multipart/form-data" >   <input type="file" name="fm" value=""><br>  <input type="submit" value="上传文件" /><br> </form></body></html>