利用PHP怎么实现一个图片上传功能-创新互联
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成都创新互联公司是创新、创意、研发型一体的综合型网站建设公司,自成立以来公司不断探索创新,始终坚持为客户提供满意周到的服务,在本地打下了良好的口碑,在过去的10多年时间我们累计服务了上千家以及全国政企客户,如自上料搅拌车等企业单位,完善的项目管理流程,严格把控项目进度与质量监控加上过硬的技术实力获得客户的一致称赞。php多图片上传类完整功能代码如下:
<?php 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 ''; } 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 < 1024) { size_BKM = (string)size . " B"; } elseif(size < (1024 * 1024)) { size_BKM = number_format((double)(size / 1024), 1) . " KB"; }else { size_BKM = number_format((double)(size / (1024 * 1024)), 1) . " MB"; } return size_BKM; } } ?> ' . smfilename . ' ' . smfiletype . ' ' . smfilesizeformat . ' ' . smfilemessage . '
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