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远程映像并将其显示给用户的最快捷、最节省内存的方法是什么？ - 备注 我不想保存它，我只想把它传递给用户。
即 用户转到 www.website.com/image1.jpg
在后台，我会使用类似于这样的 getFile 脚本来检索文件，但是我如何向用户显示它，这是一种节省内存的方法吗？
function getUrl($url, $method='', $vars='', $fh = '') {
$ch = curl_init();
if ($method == 'post') {
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $vars);
}
if ($fh != '')
{
curl_setopt($ch, CURLOPT_FILE, $fh);
}
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookies/cookies.txt');
curl_setopt($ch, CURLOPT_COOKIEFILE, 'cookies/cookies.txt');
$buffer = curl_exec($ch);
curl_close($ch);
return $buffer;
}
这里是：
function proxyImage( $fromHost, $path, $bufsize=4096 ) {
$conn = fsockopen($fromHost,80);
fwrite( $conn, "GET {$path} HTTP/1.0'r'n" );
fwrite( $conn, "Host: {$fromHost}'r'n" );
fwrite( $conn, "User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0) Gecko/20100101 Firefox/8.0'r'n" );
fwrite( $conn, "Connection: close'r'n" );
fwrite( $conn, "'r'n" );
$answer = '';
while( !feof($conn) and !$bodystarted ) {
$portion = fread( $conn, $bufsize );
if( strpos($portion,"'r'n'r'n")!==false ) $bodystarted = true;
$answer .= $portion;
}
list( $headers, $bodypart ) = explode( "'r'n'r'n", $answer, 2 );
foreach( explode("'r'n",$headers) as $h )
header($h);
echo $bodypart;
while( !feof($conn) )
echo fread( $conn, $bufsize );
fclose($conn);
}
proxyImage( 'www.newyorker.com', '/online/blogs/photobooth/NASAEarth-01.jpg' );