ImgURL是一个简单、纯粹的图床程序,让个人图床多一个选择。
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6 years ago
<?php
error_reporting(E_ALL^E_NOTICE^E_WARNING^E_DEPRECATED);
//获取真实IP
function get_ip() {
if (getenv('HTTP_CLIENT_IP')) {
$ip = getenv('HTTP_CLIENT_IP');
}
elseif (getenv('HTTP_X_FORWARDED_FOR')) {
$ip = getenv('HTTP_X_FORWARDED_FOR');
}
elseif (getenv('HTTP_X_FORWARDED')) {
$ip = getenv('HTTP_X_FORWARDED');
}
elseif (getenv('HTTP_FORWARDED_FOR')) {
$ip = getenv('HTTP_FORWARDED_FOR');
}
elseif (getenv('HTTP_FORWARDED')) {
$ip = getenv('HTTP_FORWARDED');
}
else {
$ip = $_SERVER['REMOTE_ADDR'];
}
return $ip;
}
//获取UA
function get_ua(){
$ua = $_SERVER['HTTP_USER_AGENT'];
return $ua;
}
//创建token
function token($user,$pass){
//token生成算法为:用户名 + md5后的密码 + ip + ua
$token = $user.$pass.get_ua();
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$token = md5($token);
return $token;
}
//判断用户是否登录
function is_login($user,$pass){
$token = $user.$pass.get_ua();
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$token = md5($token);
$username = $_COOKIE['user'];
$password = $_COOKIE['token'];
//进行判断
if(($user != $username) || ($password != $token)){
echo '权限不足!';
exit;
}
else{
return true;
}
}
//判断文件MIME类型
function mime($path){
$mime = mime_content_type($path);
switch ( $mime )
{
case 'image/gif':
case 'image/png':
case 'image/jpeg':
case 'image/bmp':
case 'image/webp':
return TRUE;
break;
default:
return FALSE;
break;
}
}
//根据MIME类型返回文件后缀
function ext($path){
$mime = mime_content_type($path);
switch ( $mime )
{
case 'image/gif':
return '.gif';
break;
case 'image/png':
return '.png';
break;
case 'image/jpeg':
return '.jpg';
break;
case 'image/x-ms-bmp':
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return '.bmp';
break;
case 'image/webp':
return '.webp';
break;
default:
return FALSE;
break;
}
}
//获取文件大小
function file_size($path){
//先判断文件是否存在
if(!is_file($path)){
$name = '0 byte';
}
else{
//继续执行
$size = filesize($path);
//转换为KB
$size = $size / 1024;
$size = round($size,1);
$name = $size.' KB';
//转换为Mb
if($size >= 1024){
$size = $size / 1024;
$size = round($size,1);
$name = $size.' MB';
}
}
return $name;
}
//缩略图函数
function thumbnail($img){
//返回路径
$dir = dirname($img['path']);
$thumbnail_name = $dir.'/'.$img['imgid'].'_thumb'.$img['ext'];
//缩略图完整地址
$fullpath = FCPATH.$thumbnail_name;
//echo $fullpath;
//判断缩略图是否存在
if(is_file($fullpath)){
return $thumbnail_name;
}
//$thumbnail_name = $dir.$name.'_thumb';
//返回缩略图地址,不带文件名
//返回原图
else{
return $img['path'];
}
}
?>