I need to do the subject because I'm developing with the team on PHP 5.5, but my current Fedora version contains PHP 5.6.
I've found a Remi's repo contining PHP 5.5 for FC-21, installed it as described in "Install Howto" section. But I cannot run the Apache to use with PHP v.5.5. Please suggest what I can do to have desired?
you can try to downgrade your current installation using the packet manager by issuing the command
yum downgrade php55
see downgrade or rollback updates, where you can also specify a specific version. Before that I suggest you to first verify your installation history about php if its is present.Another way is to install the specific version you want see the answer here and then add a rule to block further updates in
/etc/yum.conf
see here for the blocking rule