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HomeBackend DevelopmentPHP Tutorial PHP利用curl下传文件到FTP服务器(无ftp扩展情况上)

PHP利用curl上传文件到FTP服务器(无ftp扩展情况下)

在一次需求中,需要一个FTP服务器作为中转站,程序定时在FTP服务器获取数据,定时上传数据库的数据到FTP服务器上,由于PHP没有安装ftp扩展,导致FTP操作很是麻烦,对于socket的理解不够深入,由于时间比较紧急,在同事指点下,想到了用curl方法,经过自己的整理,将curl方法整理为一个类:

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<?php

/*
 * To change this template, choose Tools | Templates
 * ftp curl方法操作类
 */
class ftp{
    //FTP服务器地址
    public static $host = "127.0.0.1";
    //FTP端口
    public static $port = "2121";
    //上传的FTP目录
    public static $uploaddir = "upblod";
    //读取的FTP目录
    public static $readdir = "read";
    //FTP用户名
    public static $usrname = "user";
    //FTP密码
    public static $pwd = "pwd";
    /*
     * curl 方法将文件上传到FTP服务器
     * $filename上传到FTP的文件名,$uploadfile具体需要上传文件的地址(我用的绝对路径)
     */
    public static function ftp_upload($filename,$uploadfile)
    {
        $url = "ftp://".self::$host.":".self::$port."/".self::$uploaddir."/".$filename;
        //需要上传的文件
        $fp = fopen ($uploadfile, "r"); 
        $ch = curl_init(); 
        curl_setopt($ch, CURLOPT_VERBOSE, 1);  //有意外发生则报道 
        curl_setopt($ch, CURLOPT_USERPWD, self::$usrname.':'.self::$pwd); //FTP登陆账号密码,模拟登陆 
        curl_setopt($ch, CURLOPT_URL, $url); 
        curl_setopt($ch, CURLOPT_PUT, 1); //用HTTP上传一个文件 
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); //不输出 
        curl_setopt($ch, CURLOPT_INFILE, $fp); //要上传的文件 
        $http_result = curl_exec($ch); //执行 
        $error = curl_error($ch); 
        curl_close($ch); 
        fclose($fp);
        //成功上传文件 返回true
        if (!$error) 
        { 
            return true;
        }
     }
    /*
     * curl 方法将读取FTP文件并保存在本地使用
     * $filenameFTP服务器文件名,$filepath 保存到本地(服务器)的目录
     */    
    public static function ftp_read($filename,$filepath)
    {       
        $curl = curl_init(); 
        
        $target_ftp_file = "ftp://".self::$host.":".self::$port."/".self::$readdir."/".$filename;//完整路径
        
        curl_setopt($curl, CURLOPT_URL,$target_ftp_file);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($curl, CURLOPT_VERBOSE, 1);
        curl_setopt($curl, CURLOPT_FTP_USE_EPSV, 0);
        curl_setopt($curl, CURLOPT_TIMEOUT, 300); // times out after 300s
        curl_setopt($curl, CURLOPT_USERPWD,self::$usrname.':'.self::$pwd);//FTP用户名:密码
        // Sets up the output file
        //本地保存目录
        if(is_dir($filepath)){
         $outfile = fopen($filepath.$filename, 'w');//保存到本地的文件名
         curl_setopt($curl,CURLOPT_FILE,$outfile);
         // Executes the cURL 
         $info = curl_exec($curl);
         fclose($outfile);
         $error_no = curl_errno($curl);
         curl_close($curl);
         //成功读取文件,返回 true
         if($info){
             return true;
         }
        }        
     }
}
?>

?这里只是做了上传与下载文件,删除文件的操作没有涉及,有兴趣的童鞋可以研究下

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