


PHP file upload class and PHP encapsulated multi-file upload class sharing
This article mainly shares with you the relevant code of the PHP file upload class and the PHP encapsulated multi-file upload class. It has certain reference value. Interested friends can refer to it. I hope it can help everyone.
<?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>
Note: The name in must be the same as the name in the upload class The values passed in uploadFile are consistent!
Examples and usage details of multiple file upload classes encapsulated in PHP:
<?php /**//* * @(#)UploadFile.php * * 可同时处理用户多个上传文件。效验文件有效性后存储至指定目录。 * 可返回上传文件的相关有用信息供其它程序使用。(如文件名、类型、大小、保存路径) * 使用方法请见本类底部(UploadFile类使用注释)信息。 * */ class UploadFile { var $user_post_file = array(); //用户上传的文件 var $save_file_path; //存放用户上传文件的路径 var $max_file_size; //文件最大尺寸 var $last_error; //记录最后一次出错信息 //默认允许用户上传的文件类型 var $allow_type = array('gif', 'jpg', 'png', 'zip', 'rar', 'txt', 'doc', 'pdf'); var $final_file_path; //最终保存的文件名 var $save_info = array(); //返回一组有用信息,用于提示用户。 /**//** * 构造函数,用与初始化相关信息,用户待上传文件、存储路径等 * * @param Array $file 用户上传的文件 * @param String $path 存储用户上传文件的路径 * @param Integer $size 允许用户上传文件的大小(字节) * @param Array $type 此数组中存放允计用户上传的文件类型 */ function UploadFile($file, $path, $size = 2097152, $type = '') { $this->user_post_file = $file; $this->save_file_path = $path; $this->max_file_size = $size; //如果用户不填写文件大小,则默认为2M. if ($type != '') $this->allow_type = $type; } /**//** * 存储用户上传文件,检验合法性通过后,存储至指定位置。 * @access public * @return int 值为0时上传失败,非0表示上传成功的个数。 */ function upload() { for ($i = 0; $i < count($this->user_post_file['name']); $i++) { //如果当前文件上传功能,则执行下一步。 if ($this->user_post_file['error'][$i] == 0) { //取当前文件名、临时文件名、大小、扩展名,后面将用到。 $name = $this->user_post_file['name'][$i]; $tmpname = $this->user_post_file['tmp_name'][$i]; $size = $this->user_post_file['size'][$i]; $mime_type = $this->user_post_file['type'][$i]; $type = $this->getFileExt($this->user_post_file['name'][$i]); //检测当前上传文件大小是否合法。 if (!$this->checkSize($size)) { $this->last_error = "The file size is too big. File name is: ".$name; $this->halt($this->last_error); continue; } //检测当前上传文件扩展名是否合法。 if (!$this->checkType($type)) { $this->last_error = "Unallowable file type: .".$type." File name is: ".$name; $this->halt($this->last_error); continue; } //检测当前上传文件是否非法提交。 if(!is_uploaded_file($tmpname)) { $this->last_error = "Invalid post file method. File name is: ".$name; $this->halt($this->last_error); continue; } //移动文件后,重命名文件用。 $basename = $this->getBaseName($name, ".".$type); //移动后的文件名 $saveas = $basename."-".time().".".$type; //组合新文件名再存到指定目录下,格式:存储路径 + 文件名 + 时间 + 扩展名 $this->final_file_path = $this->save_file_path."/".$saveas; if(!move_uploaded_file($tmpname, $this->final_file_path)) { $this->last_error = $this->user_post_file['error'][$i]; $this->halt($this->last_error); continue; } //存储当前文件的有关信息,以便其它程序调用。 $this->save_info[] = array("name" => $name, "type" => $type, "mime_type" => $mime_type, "size" => $size, "saveas" => $saveas, "path" => $this->final_file_path); } } return count($this->save_info); //返回上传成功的文件数目 } /**//** * 返回一些有用的信息,以便用于其它地方。 * @access public * @return Array 返回最终保存的路径 */ function getSaveInfo() { return $this->save_info; } /**//** * 检测用户提交文件大小是否合法 * @param Integer $size 用户上传文件的大小 * @access private * @return boolean 如果为true说明大小合法,反之不合法 */ function checkSize($size) { if ($size > $this->max_file_size) { return false; } else { return true; } } /**//** * 检测用户提交文件类型是否合法 * @access private * @return boolean 如果为true说明类型合法,反之不合法 */ function checkType($extension) { foreach ($this->allow_type as $type) { if (strcasecmp($extension , $type) == 0) return true; } return false; } /**//** * 显示出错信息 * @param $msg 要显示的出错信息 * @access private */ function halt($msg) { printf("<b><UploadFile Error:></b> %s <br>\n", $msg); } /**//** * 取文件扩展名 * @param String $filename 给定要取扩展名的文件 * @access private * @return String 返回给定文件扩展名 */ function getFileExt($filename) { $stuff = pathinfo($filename); return $stuff['extension']; } /**//** * 取给定文件文件名,不包括扩展名。 * eg: getBaseName("j:/hexuzhong.jpg"); //返回 hexuzhong * * @param String $filename 给定要取文件名的文件 * @access private * @return String 返回文件名 */ function getBaseName($filename, $type) { $basename = basename($filename, $type); return $basename; } } /**//******************** UploadFile类使用注释 //注意,上传组件name属性不管是一个还是多个都要使用数组形式,如: <input type="file" name="user_upload_file[]"> <input type="file" name="user_upload_file[]"> //如果用户点击了上传按钮。 if ($_POST['action'] == "上传") { //设置允许用户上传的文件类型。 $type = array('gif', 'jpg', 'png', 'zip', 'rar'); //实例化上传类,第一个参数为用户上传的文件组、第二个参数为存储路径、 //第三个参数为文件最大大小。如果不填则默认为2M //第四个参数为充许用户上传的类型数组。如果不填则默认为gif, jpg, png, zip, rar, txt, doc, pdf $upload = new UploadFile($_FILES['user_upload_file'], 'j:/tmp', 100000, $type); //上传用户文件,返回int值,为上传成功的文件个数。 $num = $upload->upload(); if ($num != 0) { echo "上传成功<br>"; //取得文件的有关信息,文件名、类型、大小、路径。用print_r()打印出来。 print_r($upload->getSaveInfo()); //格式为: Array // ( // [0] => Array( // [name] => example.txt // [type] => txt // [size] => 526 // [path] => j:/tmp/example-1108898806.txt // ) // ) echo $num."个文件上传成功"; } else { echo "上传失败<br>"; } } */ ?>
Related recommendations:
Examples explaining how to implement common file upload classes in PHP
Powerful php file upload class
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