on PHP License 

Thanks for your explanations about the PHP License model, I think that you are right when you said that it's 'Free Software' license, by the fact that it's part of the GPL-incompatible free software licenses as published by the FSF, there https://www.gnu.org/licenses/license-list.html#GPLIncompatibleLicenses,

the thing which makes me prefering to consider it as Open Source license instead is the fact that it was permissive and non-copyleft and its incompatibility with the GNU GPL, but now it's ok for saying that it's a free software license.

but bear in mind that this license is not recommended for people who are interrested by the software freedom, and GNU GPL is the best to use in your software that should be Free as in Freedom, see https://www.gnu.org/philosophy/pragmatic.html and https://www.gnu.org/copyleft/gpl.html.

Thanks.   11:30, December 11, 2014 (UTC)