警告：PHP启动：无法加载动态库apc.so

Question

I case, I tried to install APC . I run configure file it's running normally, but when I try to make I get the following errors :

/home/ghost/APC-3.1.13/apc_cache.c: In function ‘_apc_cache_user_update’:
/home/ghost/APC-3.1.13/apc_cache.c:818:63: error: ‘IS_CONSTANT_INDEX’ undeclared (first use in this function)
         switch(Z_TYPE_P((*slot)->value->data.user.val) & ~IS_CONSTANT_INDEX
                                                           ^
/home/ghost/APC-3.1.13/apc_cache.c:818:63: note: each undeclared identifier is reported only once for each function it appears in
/home/ghost/APC-3.1.13/apc_cache.c:820:22: error: ‘IS_CONSTANT_ARRAY’ undeclared (first use in this function)
             case IS_CONSTANT_ARRAY:
                  ^
Makefile:186: recipe for target 'apc_cache.lo' failed
make: *** [apc_cache.lo] Error 1

After that

I run this command sh -c "echo 'extension=apc.so' >> /opt/lampp/etc/php.ini"

Check if APC installed

/opt/lampp/bin/php -r 'echo phpinfo()' | grep apc --color

Output :

Warning: PHP Startup: Unable to load dynamic library '/opt/lampp/lib/php/extensions/no-debug-non-zts-20131226/apc.so' - /opt/lampp/lib/php/extensions/no-debug-non-zts-20131226/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0

How do I fix it ?

Answer 1

You are trying to compile the extension with a PHP version where IS_CONSTANT_INDEX and IS_CONSTANT_ARRAY C constants are no longer available . And the APC extension had not been updated since then. The extension seems abandoned, as the last commit was in September 12, 2013 .

So you should whether use another caching extension, or upgrade the APC extension internals. I would rather use OPcache which is bundled with PHP since version 5.5.0.