Install APCu. APC is not supported after php 5.4
Edit php.ini
extension="apcu.so" ; APC Configuration apc.enabled = 1 apc.shm_segments = 1 apc.shm_size = 128M apc.max_file_size = 2M apc.ttl = 7200 apc.user_ttl = 7200 apc.num_files_hint = 1024 apc.enable_cli = 1
Restart apache