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 < 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;

}

}

?>

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