Warnings al actualizar Php

[Montes28]

hola amigos, tengo un servidor web con la distibución Centos 6 y actualize Php 5.4 a 5.6 y obtengo los siguiente warnings, como los puedo arreglar?

Código Javascript:

# php -v
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/modules/apc.so' - /usr/lib/php/modules/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: imagick: Unable to initialize module
Module compiled with module API=20100525
PHP    compiled with module API=20131226
These options need to match
 in Unknown on line 0
PHP Warning:  Module 'mongo' already loaded in Unknown on line 0
PHP 5.6.14 (cli) (built: Sep 30 2015 11:50:10) 
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