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// Copy file from remote server or URL

$file = 'http://3.bp.blogspot.com/-AGI4aY2SFaE/Tg8yoG3ijTI/AAAAAAAAA5k/nJB-mDhc8Ds/s400/rizal001.jpg';
$newfile = $_SERVER['DOCUMENT_ROOT'] . '/img/submitted/yoyo.jpg';

if ( copy($file, $newfile) ) {
    echo "Copy success!";
}else{
    echo "Copy failed.";
}

// http://stackoverflow.com/questions/9843933/copy-file-from-remote-server-or-url