Hi,
> Do I need WAMP 2.5 to be able to create a Virtual Host?
NO. VirtualHost exist almost since the first version of Apache.
> And would it affect the speed the loading time of my projects?
Maybe it will increase only slightly the speed of loading pages, but in return, you will avoid many problems of access.
In the file wamp\bin\apache\apache2.4.4\conf\httpd.conf just before:
# Supplemental configuration
insert:
# AcceptFilter: On Windows, none uses accept() rather than AcceptEx() and
# will not recycle sockets between connections. This is useful for network
# adapters with broken driver support, as well as some virtual network
# providers such as vpn drivers, or spam, virus or spyware filters.
AcceptFilter http none
AcceptFilter https none
and, in the configuration file for access to MySQL, use 127.0.0.1 instead of localhost for host.
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Wampserver install files & addons