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PHP实现多图片上传类实例

程序员文章站 2024-02-07 18:29:52
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PHP实现多图片上传类实例

  这篇文章主要介绍了PHP实现多图片上传类实例,该类文件注释详细功能实用且具有一定的扩展性,需要的朋友可以参考下

  本文所述为一个实用的PHP多图片文件上传类,其支持gif、jpg、jpeg、pjpeg、png格式的多图片上传功能,类中还可限制图片类型、上传图片的大小、设置上传目录、一些提交判断等功能。此外该类并不局限于图片的上传,也可以上传TXT/RAR等文件类型,只是需要对代码进行一下修改,感兴趣的读者可以自己尝试一下。

  php多图片上传类完整功能代码如下:

  

  class more_file_upload{

  const FILE_PATH = '/uploadfile/'; //默认文件上传的目录,请自行修改

  var file_type;

  var file_type_array;

  var file_type_real_array;

  var file_type_string;

  var file_name;

  var file_size;

  var file_tmp_name;

  var file_error;

  var handledate;

  static totalsize = 0;

  function __construct(file_name, file_error, file_size, file_tmp_name, file_type){

  this -> handledate = date('m-d-Y');

  if (!empty(file_name)){

  this -> file_name = file_name;

  this -> file_error = file_error;

  this -> file_size = file_size;

  this -> file_tmp_name = file_tmp_name;

  this -> file_type = file_type;

  this -> file_type_array = array('/', 'image/gif', 'image/jpg', 'image/jpeg', 'image/pjpeg', 'image/png');

  this -> file_type_real_array = array(0.1, 'jpg' => 74707370, 'gif' => 7173, 'bmp' => 6677, 'png' => 807871);

  this -> show_execute_message(this -> file_error, this -> file_name, this -> file_type, this -> file_size);

  }

  }

  function __destruct(){

  this -> file_name = NULL;

  this -> file_error = NULL;

  this -> file_size = NULL;

  this -> file_tmp_name = NULL;

  this -> file_type = NULL;

  self :: totalsize = 0;

  }

  function show_execute_message(smfileerror, smfilename, smfiletype, smfilesize){

  if(smfileerror > 0){

  switch (smfileerror){

  case 1: smfilemessage = '文件超过服务器的约定大小!';

  break;

  case 2: smfilemessage = '文件超过指定的文件大小!';

  break;

  case 3: smfilemessage = '文件只上传了部分!';

  break;

  case 4: echo "this->file_name " . '文件上传失败!
';

  break;

  }

  self :: __destruct();

  }else{

  smfiletypeflag = array_search(smfiletype, this -> file_type_array);

  // 进行真实格式验证

  if(smfiletypeflag != false){

  file = fopen(this -> file_tmp_name, "rb");

  bin = fread(file, 10);

  fclose(file);

  strInfo = @unpack("c10chars", bin);

  typeCode = intval(strInfo['chars1'] . strInfo['chars2']);

  smfiletypeflag = array_search(typeCode, this -> file_type_real_array);

  if(smfiletypeflag == false){ // 判断是否是png图片

  typeCode = intval(strInfo['chars2'] . strInfo['chars3'] . strInfo['chars4']);

  smfiletypeflag = array_search(typeCode, this -> file_type_real_array);

  if(smfiletypeflag == false){ // 判断是否是jpg图片

  $typeCode = intval(strInfo['chars7'] . strInfo['chars8'] . strInfo['chars9'] . strInfo['chars10']);

  smfiletypeflag = array_search(typeCode, this -> file_type_real_array);

  }

  }

  }

  if($smfiletypeflag == false){

  $smfilemessage = '文件类型不对,请核实!';

  self :: __destruct();

  }else{

  $resflag = $this -> move_file($this -> file_tmp_name, this -> file_name);

  if (resflag == 1){

  $smfilemessage = '文件上传成功!';

  self :: totalsize += intval($smfilesize);

  self :: __destruct();

  }else{

  $smfilemessage = '文件上传失败!';

  self :: __destruct();

  }

  }

  }

  $smfilesizeformat = $this -> size_BKM(smfilesize);

  echo '

  ' . smfilename . '

  ' . smfiletype . '

  ' . smfilesizeformat . '

  ' . smfilemessage . '

  ';

  }

  function move_file(mvfiletmp, mvfilename){ // 移动文件

  mvfilenamearr = explode('.', basename(mvfilename));

  mvfilenamearr[0] = this -> rand_string();

  mvfilename = implode('.', mvfilenamearr);

  if (is_uploaded_file(mvfiletmp)){

  uploadfile = self :: FILE_PATH . "mvfilename";

  result = move_uploaded_file(mvfiletmp, uploadfile);

  return result;

  }

  }

  function rand_string(){

  string = md5(uniqid(rand() . microtime()));

  return string;

  }

  function size_BKM(size){ // B/KB/MB单位转换

  if(size

  {

  size_BKM = (string)size . " B";

  }

  elseif(size

  {

  size_BKM = number_format((double)(size / 1024), 1) . " KB";

  }else

  {

  size_BKM = number_format((double)(size / (1024 * 1024)), 1) . " MB";

  }

  return size_BKM;

  }

  }

  ?>