php cannot upload file (777+group:apache+ selinux disabled)

As the title says, centos7
upload_temp_dir=/tmp(777)
$_SERVER['DOCUMENT_ROOT']. '/adpic'(777)

<code><?php

// 检测文件
if (!isset($_FILES['file']) || !is_uploaded_file($_FILES['file']['tmp_name']))
    exit('错误,没有找到文件' . json_encode(var_dump($_FILES)));

if ($_FILES['file']['error'] > 0)
    exit('错误，文件错误');

if ($_FILES['file']['size'] < 0)
    exit('错误，文件大小不明');

//switch (getimagesize($_FILES['file']['tmp_name'])[2]) {
//    case 1:
//        $ext = 'gif';
//        break;
//    case 2:
//        $ext = 'jpg';
//        break;
//    case 4:
//        $ext = 'jpeg';
//        break;
//    case 3:
//        $ext = 'png';
//        break;
//    default:
//        die('仅允许上传 png gif jpg 格式的图片' . var_dump($_FILES));
//        break;
//}

// 文件路径 文件名

$time = time();
$imgName = $time . mt_rand(10000, 99999);
$savePath =$_SERVER['DOCUMENT_ROOT']. '/adpic';
// 创建文件夹
// 移动文件
if (!move_uploaded_file($_FILES['file']['tmp_name'], $savePath . '/' . $imgName . '.' . $ext))
    exit('错误，文件移动失败'.error_reporting(E_ALL));

// 返回文件地址
exit("/adpic/" . $imgName . '.' . $ext);</code>

The first question is, getimagesize($_FILES'file') is false. What is the situation?
Shouldn’t the normal one be available?
Then the error message is 22527.
The problem description is roughly like this. If more information is needed, I will update it immediately. Thanks for the answer.

Reply content:

As the title says, centos7
upload_temp_dir=/tmp(777)
$_SERVER['DOCUMENT_ROOT']. '/adpic'(777)

<code><?php

// 检测文件
if (!isset($_FILES['file']) || !is_uploaded_file($_FILES['file']['tmp_name']))
    exit('错误,没有找到文件' . json_encode(var_dump($_FILES)));

if ($_FILES['file']['error'] > 0)
    exit('错误，文件错误');

if ($_FILES['file']['size'] < 0)
    exit('错误，文件大小不明');

//switch (getimagesize($_FILES['file']['tmp_name'])[2]) {
//    case 1:
//        $ext = 'gif';
//        break;
//    case 2:
//        $ext = 'jpg';
//        break;
//    case 4:
//        $ext = 'jpeg';
//        break;
//    case 3:
//        $ext = 'png';
//        break;
//    default:
//        die('仅允许上传 png gif jpg 格式的图片' . var_dump($_FILES));
//        break;
//}

// 文件路径 文件名

$time = time();
$imgName = $time . mt_rand(10000, 99999);
$savePath =$_SERVER['DOCUMENT_ROOT']. '/adpic';
// 创建文件夹
// 移动文件
if (!move_uploaded_file($_FILES['file']['tmp_name'], $savePath . '/' . $imgName . '.' . $ext))
    exit('错误，文件移动失败'.error_reporting(E_ALL));

// 返回文件地址
exit("/adpic/" . $imgName . '.' . $ext);</code>

The first question is, getimagesize($_FILES'file') is false. What is the situation?
Shouldn’t the normal one be available?
Then the error message is 22527.
The problem description is roughly like this. If more information is needed, I will update it immediately. Thank you for your answer.

Solved. After comparing php.ini, we found that it was due to the value of open_basedir. After leaving it empty, it returned to normal.