Share php file upload class

This article mainly shares the relevant code of the php file upload class for everyone. It has a certain reference value. Interested friends can refer to it.

The example of this article shares the php file upload class for everyone. The specific code is for your reference. The specific content is as follows

<?php
$upload = new UpLoad();
$upload->uploadFile(&#39;fm&#39;);
/*打印错误信息*/
// var_dump($upload->errorNumber);
// var_dump($upload->errorInfo);
class UpLoad{
  //文件上传路径
  protected $path = &#39;upload/&#39;;
  //允许文件上传的后缀
  protected $allowSuffix = [&#39;jpg&#39;,&#39;jpeg&#39;,
  &#39;gif&#39;,&#39;wbmp&#39;,&#39;png&#39;];
  //mime类型 
  protected $allowMime =[&#39;image/jpg&#39;,&#39;image/jpeg&#39;,
  &#39;image/gif&#39;,&#39;image/wbmp&#39;,&#39;image/png&#39;];
  //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 = &#39;up_&#39;;
  //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)){
      $this->setOption(&#39;errorNumber&#39;,-1 );
      return false;
    }
    //判断该路径是否存在是否可写
    if (!$this->check()){
      $this->setOption(&#39;errorNumber&#39;, -2);
      return false; 
    }
    //判断$_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][&#39;error&#39;];
    if($error){
      $this->setOption(&#39;errorNumber&#39;, -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(&#39;errorNumber&#39;, -7);
        return false;
      }
    }else{
      $this->setOption(&#39;errorNumber&#39;, -6);
      return false;
    }
  }
  //检测文件夹是否存在，是否可写
  protected function check(){
    //文件夹不存在或者不是目录。创建文件夹
    if(!file_exists($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][&#39;name&#39;];
    //得到文件的mime类型
    $this->mime = $_FILES[$key][&#39;type&#39;];
    //得到文件的临时文件
    $this->tmpName = $_FILES[$key][&#39;tmp_name&#39;];
    //得到文件大小
    $this->size = $_FILES[$key][&#39;size&#39;];
    //得到文件后缀
    $this->suffix = pathinfo($this->oldName)[&#39;extension&#39;];
  }
  //判断文件大小
  protected function checkSize(){
    if($this->size > $this->maxSize){
      $this->setOption(&#39;errorNumber&#39;, -3);
      return false;
    }
    return true;
  }
  //判断mime类型
  protected function checkMime(){
    if(!in_array($this->mime, $this->allowMime)){
      $this->setOption(&#39;errorNumber&#39;, -4);
      return false;
    }
    return true;
  }
  //判断后缀
  protected function checkSuffix(){
    if(!in_array($this->suffix, $this->allowSuffix)){
      $this->setOption(&#39;errorNumber&#39;, -5);
      return false;
    }
    return true;
  }
  //创建新名字
  protected function createNewName(){
    if($this->isRandName){
      $name = $this->prefix.uniqid().&#39;.&#39;.$this->suffix;
    }else {
      $name = $this->prefix.$this->oldName;
    }
    return $name;
  }
  public function __get($name){
    if($name == &#39;errorNumber&#39;){
      return $this->errorNumber;
    }elseif ($name == &#39;errorInfo&#39;){
      return $this->getErrorInfo();
    }
  }
  protected function getErrorInfo(){
    switch ($this->errorNumber){
    case -1:
      $str = &#39;文件路径没有设置&#39;;
      break;
    case -2:
      $str = &#39;文件不是目录或者不可写&#39;;
      break;
    case -3:
      $str = &#39;文件超过指定大小&#39;;
      break;
    case -4:
      $str = &#39;mime类型不符合&#39;;
      break;
    case -5:
      $str = &#39;文件后缀不符合&#39;;
      break;
    case -6:
      $str = &#39;不是上传文件&#39;;
      break;
    case -7:
      $str = &#39;移动失败&#39;;
      break;
    case 1:
      $str = &#39;超出ini设置大小&#39;;
      break;
    case 2:
      $str = &#39;超出html表单大小&#39;;
      break;
    case 3:
      $str = &#39;文章只有部分上传&#39;;
      break;
    case 4:
      $str = &#39;没有文件上传&#39;;
      break;
    case 6:
      $str = &#39;找不到临时文件&#39;;
      break;
    case 7:
      $str = &#39;文件写入失败&#39;;
      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>

Note: The name in must be consistent with the value passed in uploadFile in the upload class!

For more exciting content, please refer to the PHP file upload operation summary to learn.

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