PHP - getting a site's favicon and converting it to png if necessary

Question

For any given site \"example.domain.tld\" or merely \"domain.tld\" I need to do the following in PHP:

• If the site has a favicon, get it wherever it is

Answer 1

As Iain Fraser said, the Favicon class from controlstyle.com doesn't works with all test case.

Basically, if provided, the shortcut icon tag can contain different URL types :

• full absolute URL : http://www.domain.com/images/fav.ico
• absolute URL with relative scheme : //www.domain.com/images/fav.ico
• absolute path : /images/fav.ico
• relative URL : ../images/fav.ico

Furthermore, the web page can contain a attribute that changes how to deal with relative URL and absoute path...

So I've written a PHP class that works with all these cases. First, it tries to get the favicon URL from the attribute, and fallback to the default favicon URI (//www.domain.com/favicon.ico) in case of failure.

You can grab it on my website here : http://www.finalclap.com/faq/477-php-favicon-find-download or install it using composer : composer require vincepare/favicon-downloader.

How to use :

icoExists){
    echo "Favicon found : ".$favicon->icoUrl."\n";

    // Saving favicon to file
    $filename = 'favicon-'.time().'.'.$favicon->icoType;
    file_put_contents($filename, $favicon->icoData);
    echo "Saved to ".$filename."\n\n";
} else {
    echo "No favicon for ".$favicon->url."\n\n";
}
?>