While attempting to install Blackfire.io PHP Probe on my CentOS server by entering the follow command sudo yum install blackfire-php I received the following error:
Error: Package: blackfire-php-1.8.0-1.x86_64 (blackfire)
Requires: php-cli
Error: Package: blackfire-php-1.8.0-1.x86_64 (blackfire)
Requires: php-common >= 5.3
The odd thing is that I have php-cli and php-common already installed on my server.
By entering php-cli -v, I received:
PHP 5.5.31 (cli) (built: Jan 25 2016 09:03:41)
Copyright (c) 1997-2015 The PHP Group
Zend Engine v2.5.0, Copyright (c) 1998-2015 Zend Technologies
with XCache v3.2.0, Copyright (c) 2005-2014, by mOo
with the ionCube PHP Loader v4.7.5, Copyright (c) 2002-2014, by ionCube Ltd.
with XCache Cacher v3.2.0, Copyright (c) 2005-2014, by mOo
with Suhosin v0.9.36, Copyright (c) 2007-2014, by SektionEins GmbH
Any ideas or suggestions why Blackfire is unable to recognize that php-cli and php-common?
After a lot of patience with researching and contacting directly with the server company (that was hosting the platform). I was finally told "Blackfire is not compatible with the cPanel php."
So then, I decided to contact Blackfire and after a bit of back and forth I was then told the following by them:
I'm not aware on anything on our side making Blackfire incompatible with cPanel. However it seems they reworked the PHP "natural" way of installing extensions so I guess you should probably contact them to get more information.
Which obviously, I already did.
However, if you have full root access to the VPS, then I guess the manual installation procedure should work with some minor adjustments. The main idea is to download the proper so, put in in the PHP extension directory and add the blackfire.ini file.
In a nutshell, I was not able to properly fix the problem on my existing cPanel installation.
So warning, if you're using cPanel, forget about Blackfire. Sadly, at the moment they're not compatible.
Hopefully this saves some people a lot of time.
Note, if someone ends up reading this and actually comes up with a solution and can provide step-by-step instructions, I will gladly change your response as an accepted answer :]