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php - How to get a list of databases?

I was wondering if there's a way in PHP to list all available databases by usage of mysqli. The following works smooth in MySQL (see php docs):

$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
$db_list = mysql_list_dbs($link);

while ($row = mysql_fetch_object($db_list)) {
 echo $row->Database . "
";
}  

Can I Change:

$db_list = mysql_list_dbs($link); // mysql

Into something like:

$db_list = mysqli_list_dbs($link); // mysqli

If this is not working, would it be possible to convert a created mysqli connection into a regular mysql and continue fetching/querying on the new converted connection?

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It doesn't appear as though there's a function available to do this, but you can execute a show databases; query and the rows returned will be the databases available.

EXAMPLE:

Replace this:

$db_list = mysql_list_dbs($link); //mysql 

With this:

$db_list = mysqli_query($link, "SHOW DATABASES"); //mysqli

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