`odbc_close()` does not report success and some drivers (namely Microsoft Access) don't seem to close connections at first attempt. This is normally not an issue, unless you need to establish many connections within the script lifetime.
You can use the fact that resource type changes (e.g. from "odbc link" to "Unknown") as a trick to figure out whether connection was successfully closed (and eventually retry):
<?php
$type = get_resource_type($conn);
$wait_until = time() + 3;
do {
odbc_close($conexion_odbc);
} while (get_resource_type($conn)===$type && time()<$wait_until);
odbc_close
(PHP 4, PHP 5, PHP 7)
odbc_close — Close an ODBC connection
Description
odbc_close
( resource
$connection_id
) : voidCloses down the connection to the database server.
Return Values
No value is returned.
Notes
Note:
This function will fail if there are open transactions on this connection. The connection will remain open in this case.
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User Contributed Notes 2 notes
alvaro at demogracia dot com ¶
1 year ago
