function main()
{
if (!isset($_GET['url']) || !preg_match('#^http.?://.+\\.tumblr\\.com.*#i', $_GET['url'])) {
echo $_GET['url'];
exit('Hello Visitor!');
}
$strPageSource = getPageSource(encode_cjk_url($_GET['url']));
#get HTML page source code
!$strPageSource && echoImageNotFoundTextFileAndExit($_GET['url']);
$arrImagesUrls = parseImagesUrls($strPageSource);
#parse urls of images
$intCountOfImagesUrls = count($arrImagesUrls);
$intCountOfImagesUrls === 0 && echoImageNotFoundTextFileAndExit($_GET['url']);
#no image url found, echo error message as txt file.
$intCountOfImagesUrls === 1 && redirectAndExit(array_pop($arrImagesUrls));
#we got just one image url to be fetch, so no need for fetching, just redirect the browser to it.
$arrContentAndUrlOfValidImages = fetchImages($arrImagesUrls);
#not every url is available, so try every one.
$intCountOfValidImagesUrls = count($arrContentAndUrlOfValidImages['validImagesUrls']);
#check out the number of available urls
$intCountOfValidImagesUrls === 0 && echoImageNotFoundTextFileAndExit($_GET['url']);
$intCountOfValidImagesUrls === 1 && redirectAndExit(array_pop($arrContentAndUrlOfValidImages['validImagesUrls']));
#if we got just one available url, no need to pack the image cause we could just redirect the browser.
//when we got multiple images to deal with
$strZipString = makeZipPack($arrContentAndUrlOfValidImages['imageStrings'], $arrContentAndUrlOfValidImages['validImagesUrls']);
outputZipPackAsFileDownload($strZipString);
}
function main()
{
(!isset($_GET['url']) || !filter_var($_GET['url'], FILTER_VALIDATE_URL)) && exit('Hello World!');
$strPageSource = getPageSource($_GET['url']);
#get HTML page source code
!$strPageSource && echoImageNotFoundTextFileAndExit($_GET['url']);
$arrImagesUrls = parseImagesUrls($strPageSource);
#parse urls of images
$intCountOfImagesUrls = count($arrImagesUrls);
$intCountOfImagesUrls === 0 && echoImageNotFoundTextFileAndExit($_GET['url']);
#no image url found, echo error message as txt file.
$intCountOfImagesUrls === 1 && redirectAndExit(array_pop($arrImagesUrls));
#we got just one image url to be fetch, so no need for fetching, just redirect the browser to it.
$arrContentAndUrlOfValidImages = fetchImages($arrImagesUrls);
#not every url is available, so try every one.
$intCountOfValidImagesUrls = count($arrContentAndUrlOfValidImages['validImagesUrls']);
#check out the number of available urls
$intCountOfValidImagesUrls === 0 && echoImageNotFoundTextFileAndExit($_GET['url']);
$intCountOfValidImagesUrls === 1 && redirectAndExit(array_pop($arrContentAndUrlOfValidImages['validImagesUrls']));
#if we got just one available url, no need to pack the image cause we could just redirect the browser.
//when we got multiple images to deal with
$strZipString = makeZipPack($arrContentAndUrlOfValidImages['imageStrings'], $arrContentAndUrlOfValidImages['validImagesUrls']);
outputZipPackAsFileDownload($strZipString);
}
