這篇文章主要介紹了PHP實(shí)現(xiàn)多圖片上傳類實(shí)例,該類文件注釋詳細(xì)功能實(shí)用且具有一定的擴(kuò)展性,需要的朋友可以參考下
本文所述為一個(gè)實(shí)用的PHP多圖片文件上傳類，其支持gif、jpg、jpeg、pjpeg、png格式的多圖片上傳功能，類中還可限制圖片類型、上傳圖片的大小、設(shè)置上傳目錄、一些提交判斷等功能。此外該類并不局限于圖片的上傳，也可以上傳TXT/RAR等文件類型，只是需要對(duì)代碼進(jìn)行一下修改，感興趣的讀者可以自己嘗試一下。
php多圖片上傳類完整功能代碼如下：
class more_file_upload{
const FILE_PATH = '/uploadfile/'; //默認(rèn)文件上傳的目錄，請(qǐng)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 = '文件超過服務(wù)器的約定大小!';
break;
case 2: smfilemessage = '文件超過指定的文件大小!';
break;
case 3: smfilemessage = '文件只上傳了部分!';
break;
case 4: echo "this->file_name " . '文件上傳失敗!
';
break;
}
self :: __destruct();
}else{
smfiletypeflag = array_search(smfiletype, this -> file_type_array);
// 進(jìn)行真實(shí)格式驗(yàn)證
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){ // 判斷是否是png圖片
typeCode = intval(strInfo['chars2'] . strInfo['chars3'] . strInfo['chars4']);
smfiletypeflag = array_search(typeCode, this -> file_type_real_array);
if(smfiletypeflag == false){ // 判斷是否是jpg圖片
$typeCode = intval(strInfo['chars7'] . strInfo['chars8'] . strInfo['chars9'] . strInfo['chars10']);
smfiletypeflag = array_search(typeCode, this -> file_type_real_array);
}
}
}
if($smfiletypeflag == false){
$smfilemessage = '文件類型不對(duì)，請(qǐng)核實(shí)!';
self :: __destruct();
}else{
$resflag = $this -> move_file($this -> file_tmp_name, this -> file_name);
if (resflag == 1){
$smfilemessage = '文件上傳成功!';
self :: totalsize += intval($smfilesize);
self :: __destruct();
}else{
$smfilemessage = '文件上傳失敗!';
self :: __destruct();
}
}
}
$smfilesizeformat = $this -> size_BKM(smfilesize);
echo '
' . smfilename . '
' . smfiletype . '
' . smfilesizeformat . '
' . smfilemessage . '
';
}
function move_file(mvfiletmp, mvfilename){ // 移動(dòng)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單位轉(zhuǎn)換
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;
}
}
?>