Da li moze perzistentna konekcija ka bazi u mysqli?

http://www.php.net/manual/en/mysqli.connect.php
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host
Can be either a host name or an IP address. Passing the NULL value or the string "localhost" to this parameter, the local host is assumed. When possible, pipes will be used instead of the TCP/IP protocol. Prepending host by p: opens a persistent connection.
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Open a persistent connection to a MySQL server