PHP实现多图片上传类实例,_PHP教程
程序员文章站
2022-06-07 22:42:21
...
PHP实现多图片上传类实例,
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:
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 ''; } 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 ' . smfilename . ' ' . smfiletype . ' ' . smfilesizeformat . ' ' . smfilemessage . '
读者可以将上述代码复制到PHP文件中,并保存文件名为:more_upload_file.class.php,在使用时include该文件即可。