PHP save remote pictures to local

Simple file operations, save remote pictures locally.

 function get_file($url,$folder,$pic_name){
 set_time_limit(24*60*60); //Limit the maximum execution time
 $destination_folder=$folder?$folder.' /':''; //File download and save directory
 $newfname=$destination_folder.$pic_name;//File PATH
 $file=fopen($url,'rb');

 if($file){
 $ newf=fopen($newfname,'wb');
 if($newf){
 while(!feof($file)){
 fwrite($newf,fread($file,1024*8),1024*8) ;
 }
 }
 if($file){
 fclose($file);
 }
 if($newf){
 fclose($newf);
 }
 }
 }
 get_file("http://www .baidu.com/img/baidu_logo.gif","file","baidu.jpg");
?>