情景:客戶端上傳圖片到服務(wù)器A,服務(wù)器A同步上傳至另外一個(gè)靜態(tài)資源服務(wù)器B

環(huán)境:php7 linux(ubuntu)

安裝php的ssh2擴(kuò)展

sudo apt-get install libssh2-1-dev

sudo  apt-get install php-ssh2

sudo service apache2 restart

可在圖片上傳至服務(wù)器A后同步上傳至B
A上傳文件至B 函數(shù)

 //scp上傳文件至遠(yuǎn)程服務(wù) $host為B服務(wù)器域名(IP) $user B服務(wù)器用戶 $password B服務(wù)器密碼 $local_file為本地文件， $remote_file為遠(yuǎn)程文件
 function scpUploadFile($host,$user,$password,$local_file,$remote_file){
      $ssh2 = ssh2_connect($host, 22);  //先登陸SSH并連接
      ssh2_auth_password($ssh2,$user,$password);//身份認(rèn)證  也可以用
      //本地傳輸文件到遠(yuǎn)程服務(wù)器
      $stream=ssh2_scp_send($ssh2, $local_file, $remote_file, 0777);
      $data =['host'=>$host,'user'=>$user,'pass'=>$password,'lo'=>$local_file,'re'=>$remote_file];
  
      //默認(rèn)權(quán)限為0644，返回值為bool值，true或false.
     return $stream;
 }

A從B下載文件 函數(shù)

function scpDownloadFile($host,$user,$password,$local_file,$remote_file){
2     $ssh2 = ssh2_connect($host, 22);
3     ssh2_auth_password($ssh2,$user,$password);
4     //從遠(yuǎn)程服務(wù)器下載文件
5     $stream=ssh2_scp_revc($ssh2, $remote_file, $local_file);
6     return $stream;
7 }

上述連接及身份認(rèn)證方式 可換為SSH密鑰鏈接

$ssh2 = ssh2_connect('shell.example.com', 22, array('hostkey'=>'ssh-rsa'));
 
 if (ssh2_auth_pubkey_file($connection, 'username',
                           '/home/username/.ssh/id_rsa.pub',
                           '/home/username/.ssh/id_rsa', 'secret')) {
   echo "Public Key Authentication Successful\n";
 } else {
   die('Public Key Authentication Failed');
 }

簡(jiǎn)單處理客戶端多圖片上傳請(qǐng)求(處理粗糙,可自行完善)
多圖片上傳數(shù)組處理

function buildImgArray($_FILES){
      $i = 0;
      foreach ($files as $v){//三維數(shù)組轉(zhuǎn)換成2維數(shù)組
          if(is_string($v['name'])){ //單文件上傳
              $info[$i] = $v;
              $i++;
          }else{ // 多文件上傳
              foreach ($v['name'] as $key=>$val){//2維數(shù)組轉(zhuǎn)換成1維數(shù)組
                  //取出一維數(shù)組的值，然后形成另一個(gè)數(shù)組
                 //新的數(shù)組的結(jié)構(gòu)為：info=>i=>('name','size'.....)
                 $info[$i]['name'] = $v['name'][$key];
                 $info[$i]['size'] = $v['size'][$key];
                 $info[$i]['type'] = $v['type'][$key];
                 $info[$i]['tmp_name'] = $v['tmp_name'][$key];
                 $info[$i]['error'] = $v['error'][$key];
                 $i++;
             }
         }
     }
     return $info;
 }

上傳至A并同步上傳至B

function uploadFile($files,$host,$user,$password,$maxSize=1048576,$imgFlag=true){
      $date = getdate(time());
      $year = $date['year'];
      $mon = $date['mon'];
      $day = $date['mday'];
      $path = 'upload/';
      if (! is_dir($path)) {
          mkdir($path,0777,true);
      }
     $i = 0;
     foreach ($files as $val) {
         if ($val['error'] == 0) {
             if($val['size']>$maxSize){
                 echo "文件太大了";
                 return 1;
             }
             if($imgFlag){
                 $result = getimagesize($val['tmp_name']);
                 if(!$result){
                     echo "您上傳的不是一個(gè)真正圖片";
                     return 2;
                 }
             }
             if(!is_uploaded_file($val['tmp_name'])){
                 echo "不是通過httppost傳輸?shù)?;
                 return 3;
             }
             $realName = $year.$mon.$day.time().$val['name'];
             $destination = $path."/".$realName;
             if(move_uploaded_file($val['tmp_name'], $destination)){
                 $isUp = scpUploadFile($host,$user,$password,$destination,'/upload/'.$realName);
                 if(!$isUp){
                     return 4;
                 }
                 $uploadedFiles[$i]['img']='/upload/'.$realName;
                 $i++;
             }
         }else {
             echo '上傳失敗';
             return 5;
         }
     }
     return $uploadedFiles;
 }