PHP实现远程下载文件到本地

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echo httpcopy("http://www.baidu.com/img/baidu_sylogo1.gif");

function httpcopy($url, $file="", $timeout=60) {

$file = empty($file) ? pathinfo($url,PATHINFO_BASENAME) : $file;

$dir = pathinfo($file,PATHINFO_DIRNAME);

!is_dir($dir) && @mkdir($dir,0755,true);

$url = str_replace(" ","%20",$url);

if(function_exists('curl_init')) {

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);

$temp = curl_exec($ch);

if(@file_put_contents($file, $temp) && !curl_error($ch)) {

return $file;

} else {

return false;

}

} else {

$opts = array(

"http"=>array(

"method"=>"GET",

"header"=>"",

"timeout"=>$timeout)

);

$context = stream_context_create($opts);

if(@copy($url, $file, $context)) {

//$http_response_header

return $file;

} else {

return false;

}

}

}

?>

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// maximum execution time in seconds

set_time_limit (24 * 60 * 60);

if (!isset($_POST['submit'])) die();

// folder to save downloaded files to. must end with slash

$destination_folder = 'temp/';

$url = $_POST['url'];

$newfname = $destination_folder . basename($url);

$file = fopen ($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);

}

?>