Why doesn't APC caching work?

Question

PHP

Installed APC on debian 8 jessie:

# apt-get update
# apt-get install php5-apcu
# nano /etc/php5/mods-available/apcu.ini

Collected config:

extension=apcu.so
apc.enabled=1
apc.shm_segments=1
apc.shm_size=1024M
apc.ttl=3600
apc.user_ttl=7200
apc.gc_ttl=3600
apc.max_file_size=1M
apc.stat=1

infophp:
apc.php
Why is the cache not working? Monitoring always shows zeros..

Answer 1

Found this information

/tmp/pear/temp/APC/apc_compile.c:2417:9: error: ‘zend_trait_precedence’ has
no member named ‘function’
make: *** [apc_compile.lo] Error 1
ERROR: `make' failed

Answer 2

And where is the piece of PHP code in which you are trying or using APC? And the result...