This function is deprecated. You should use the following PHP function instead: sasql_pconnect.
Establishes a persistent connection to a SQL Anywhere database. Because of the way Apache creates child processes, you may
observe a performance gain when using sqlanywhere_pconnect instead of sqlanywhere_connect. Persistent connections may provide
improved performance in a similar fashion to connection pooling. If your database server has a limited number of connections
(for example, the personal database server is limited to 10 concurrent connections), caution should be exercised when using
persistent connections. Persistent connections could be attached to each of the child processes, and if you have more child
processes in Apache than there are available connections, you will receive connection errors.