Binding to a specific ip address when using the PHP mysql_connect function

I have a Cent OS setup running a pretty standard LAMP stack and I have two publicly available IP addresses (eth0 and eth0:1).

I want to use the second IP address (eth0:1) when connecting out to a remotely开发者_StackOverflow社区 hosted MySQL database. How can I go about that?

Thanks!

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If you have root access, you can do SNAT with iptables to use a specific source IP for this particular destination:

iptables -t nat -A POSTROUTING -o eth0 -d <mysql_server_ip> -j SNAT --to-source <source_ip>