With the apcu extension, apc_clear_cache() may not expect any parameters. (It depends on a compile-time flag, APC_FULL_BC.)
(PECL apc >= 2.0.0)
apc_clear_cache — Clears the APC cache
$cache_type = ""
] )Clears the user/system cache.
cache_type
If cache_type is "user", the
user cache will be cleared; otherwise, the system cache (cached files)
will be cleared.
Returns TRUE always
With the apcu extension, apc_clear_cache() may not expect any parameters. (It depends on a compile-time flag, APC_FULL_BC.)
Looking at the APC source, apc_clear_cache() only recognizes "user" as a cache_type. If cache_type is omitted, or any other string (including "opcode") is provided, the effect is to clear the system cache.
If this function is run from the CLI it will clear the command line cache only.
To clear the http cache you need to put this in a PHP script and run it via a http:// URL.