php采集内容中带有图片地址的远程图片并保存的方法

function my_file_get_contents($url, $timeout=30) { 

 if ( function_exists('curl_init') )  

 { 

  $ch = curl_init(); 

  curl_setopt ($ch, curlopt_url, $url); 

  curl_setopt ($ch, curlopt_returntransfer, 1); 

  curl_setopt ($ch, curlopt_connecttimeout, $timeout); 

  $file_contents = curl_exec($ch); 

  curl_close($ch); 

 }  

 else if ( ini_get('allow_url_fopen') == 1 || strtolower(ini_get('allow_url_fopen')) == 'on' )    

 { 

  $file_contents = @file_get_contents($url); 

 }  

 else  

 { 

  $file_contents = ''; 

 } 

 return $file_contents; 

}

function get_remote($body,$title){ 

 

 $img_array = array();  

 $img_path = realpath("../../../upfile/news/").'/'.date("y/m/d/"); //采集远程图片保存地址 

 //die($img_path); 

 $img_rpath='/upfile/news/'.date("y/m/d/");  //设置访问地址 

 $body = stripslashes(strtolower($body));  

 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) {  

  $get_file = my_file_get_contents($value,60); 

  $filetime = time();    

  $filename = date("ymdhis",$filetime).rand(1,999).'.'.substr($value,-3,3);  

  if(emptyempty($get_file)){ 

   @sleep(10); 

   $get_file = my_file_get_contents($value,30); 

   if(emptyempty($get_file)){ 

    $body = preg_replace("/".addcslashes($value,"/")."/isu", '/notfound.jpg', $body); 

    continue; 

    } 

  } 

  if(!emptyempty($get_file) ){ 

   if( mkdirs($img_path) ) 

   { 

    $fp = fopen($img_path.$filename,"w"); 

    if(fwrite($fp,$get_file)){          

     $body = preg_replace("/".addcslashes($value,"/")."/isu", $img_rpath.$filename, $body);  

    } 

    fclose($fp); 

    @sleep(6); 

   }    

  }     

  

 } 

 $body =str_replace("<img","<img ",$body);  

 return $body;

  

} 

 

function mkdirs($dir) 

{ 

 if(!is_dir($dir)){ 

  if(!mkdirs(dirname($dir))){ 

   return false;} 

  if(!mkdir($dir,0777)){ 

   return false;} 

 } 

 return true; 

} 

//用法如下：

 

$str ='fasfsdafsa<img src=http://filesimg.xxxx.com/2010/03/2010062300391582.jpg />'; 

echo get_remote($str,'图片');