Convert relative path to absolute path_PHP tutorial

Extract a function in Gregarius. Relative paths in web pages can be automatically converted into absolute paths.

function relative_to_absolute($content, $feed_url) {
preg_match('/(http|https|ftp):///', $feed_url, $protocol);
$ server_url = preg_replace("/(http|https|ftp|news):///", "", $feed_url);
$server_url = preg_replace("//.*/", "", $server_url) ;

if ($server_url == '') {
return $content;
}

if (isset($protocol[0])) {
$ new_content = preg_replace('/href="//', 'href="'.$protocol[0].$server_url.'/', $content);
$new_content = preg_replace('/src="/ /', 'src="'.$protocol[0].$server_url.'/', $new_content);
} else {
$new_content = $content;
} }
return $ new_content;
}
?>

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