php阿里云上传
use niklaslu\AliyunOSS;
$aliyunConfig = [
    'access_key_id' => '**************',
    'access_key_secret' => '*****************',
    'end_point' => 'oss-cn-shenzhen.aliyuncs.com',
    'bucket' => '*******',
    'domain' => 'http://********.oss-cn-shenzhen.aliyuncs.com/', // 域名
    'custom' => false //custom为true时使用自定义域名
];
$aliyun = new AliyunOSS($aliyunConfig);
$obj = $aliyun->getOss();
$file = 'a.txt';
$filepath = dirname(__FILE__)."/".$file;
if (file_exists($filepath)){
    $res = $aliyun->upload($filepath);
    print_r($res);
}else{
    echo '无此文件';
}