(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)
odbc_data_source — Returns information about available DSNs
This function will return the list of available DSN (after calling it several times).
odbcThe ODBC connection object, see odbc_connect() for details.
fetch_type
       The fetch_type can be one of two constant types:
       SQL_FETCH_FIRST, SQL_FETCH_NEXT.
       Use SQL_FETCH_FIRST the first time this function is
       called, thereafter use the SQL_FETCH_NEXT.
      
   Returns false on error, an array upon success, and null after fetching
   the last available DSN.
  
| Version | Description | 
|---|---|
| 8.4.0 | odbcexpects an Odbc\Connection
  instance now; previously, a resource was expected. | 
Example #1 List available DSNs
<?php
$conn = odbc_connect('dsn', 'user', 'pass');
$dsn_info = odbc_data_source($conn, SQL_FETCH_FIRST);
while ($dsn_info) {
    print_r($dsn_info);
    $dsn_info = odbc_data_source($conn, SQL_FETCH_NEXT);
}
?>The above example will output something similar to:
Array
(
    [server] => dsn
    [description] => ODBC Driver 17 for SQL Server
)
Array
(
    [server] => other_dsn
    [description] => Microsoft Access Driver (*.mdb, *.accdb)
)
