php保存远程图片_PHP教程

php保存远程图片,下面这段代码是我自己写的,但是有一个问题就是放在服务器就保存图片的成功不是很高,我用的是file_get_contents来取得,最后发现如果主机有防盗的就读取了

php保存远程图片,下面这段代码是我自己写的,但是有一个问题就是放在服务器就保存图片的成功不是很高,我用的是file_get_contents来取得,最后发现如果主机有防盗的就读取了,我们欺骗主机的方法来做,就是用fsockopen向主机发送一个用户包

function get_remote($body){
 set_time_limit(0);
 $img_array = array();
 $img_path = "get_pic/";
 preg_match_all("/(src|SRC)=["|'| ]{0,}(http://(.*).(gif|jpg|jpeg|png))/isU",$body,$img_array);
 $img_array = array_unique($img_array[2]);
 foreach ($img_array as $key => $value) {
  $get_file = @file_get_contents($value);
  $filetime = time();   
  !is_dir($img_path) ? mkdir($img_path) : null; 
  $filename = date("YmdHis",$filetime).rand(1,999).'.'.substr($value,-3,3);
  if(empty($get_file)){
   sleep(3);
   $get_file = @file_get_contents($value);
   if(empty($get_file)){
    $body = preg_replace("/".addcslashes($value,"/")."/isU", 'http://www.111cn.cn/notfound.jpg', $body);
    continue;
    }
  }
  if(!empty($get_file) ){
   $fp = fopen($img_path.$filename,"w");
   if(fwrite($fp,$get_file)){         
    $body = preg_replace("/".addcslashes($value,"/")."/isU", $img_path.$filename, $body);
   }
  }
  fclose($fp);
  sleep(1);
 }
 
 //$body =str_replace('  //$body =str_replace('  return $body;
 
}

下面我们来看看fsockopen的方法喽.

if($gcookie=="" && !empty($rfurl)) $gcookie = RefurlCookie($rfurl);
   $sessionQuery = "GET $gquery HTTP/1.1rn";
   $sessionQuery .= "Host: $ghostrn";
   $sessionQuery .= "Referer: $rfurlrn";
   $sessionQuery .= "Accept: */*rn";
   $sessionQuery .= "User-Agent: Mozilla/4.0 (compatible; MSIE 5.00; Windows 98)rn";
   if($gcookie!=""&&!ereg("[rn]",$gcookie)) $sessionQuery .= $gcookie."rn";
   $sessionQuery .= "Connection: Keep-Alivernrn";
   $errno = "";
   $errstr = "";
$url ='http://www.moko.cc';
$m_fp = fsockopen($url,80,$errno,$errstr,10);
fwrite($m_fp,$sessionQuery);

function RefurlCookie($gurl){
 global $gcookie,$lastRfurl;
 $gurl = trim($gurl);
 if(!empty($gcookie) && $lastRfurl==$gurl) return $gcookie;
 else $lastRfurl=$gurl;
 if(trim($gurl)=='') return '';
 $urlinfos = GetHostInfo($gurl);
  $ghost = $urlinfos['host'];
  $gquery = $urlinfos['query'];
  $sessionQuery = "GET $gquery HTTP/1.1rn";
  $sessionQuery .= "Host: $ghostrn";
  $sessionQuery .= "Accept: */*rn";
  $sessionQuery .= "User-Agent: Mozilla/4.0 (compatible; MSIE 5.00; Windows 98)rn";
  $sessionQuery .= "Connection: Closernrn";
  $errno = "";
  $errstr = "";
  $m_fp = fsockopen($ghost, 80, $errno, $errstr,10) or die($ghost.'
');
  fwrite($m_fp,$sessionQuery);
  $lnum = 0;
  //获取详细应答头
  $gcookie = "";
 while(!feof($m_fp)){
   $line = trim(fgets($m_fp,256));
   if($line == "" || $lnum>100) break;
   else{
    if(eregi("^cookie",$line)){
     $gcookie = $line;
     break;
    }
   }
  }
   fclose($m_fp);
   }
  哈这样的话就可以保存远程有图片防盗的主机的图片了喽.