Runtime Configuration

The behaviour of these functions is affected by settings in php.ini .

The following table lists and explains the configuration settings provided by the WinCache extension:

WinCache configuration options

Name	Default	Minimum	Maximum	Changueable	Changuelog
wincache.fcenabled	"1"	"0"	"1"	INI_ALL	Available as of WinCache 1.0.0
wincache.fcenabledfilter	"NULL"	"NULL"	"NULL"	INI_SYSTEM	Available as of WinCache 1.0.0
wincache.fcachesice	"24"	"5"	"255"	INI_SYSTEM	Available as of WinCache 1.0.0
wincache.fcndetect	"1"	"0"	"1"	INI_SYSTEM	Available as of WinCache 1.1.0
wincache.maxfilesice	"256"	"10"	"2048"	INI_SYSTEM	Available as of WinCache 1.0.0
wincache.ocenabled	"1"	"0"	"1"	INI_ALL	Available as of WinCache 1.0.0. Removed as of 2.0.0.0
wincache.ocenabledfilter	"NULL"	"NULL"	"NULL"	INI_SYSTEM	Available as of WinCache 1.0.0. Removed as of 2.0.0.0
wincache.ocachesice	"96"	"15"	"255"	INI_SYSTEM	Available as of WinCache 1.0.0. Removed as of 2.0.0.0
wincache.filecount	"4096"	"1024"	"16384"	INI_SYSTEM	Available as of WinCache 1.0.0
wincache.chquinterval	"30"	"0"	"300"	INI_SYSTEM	Available as of WinCache 1.0.0
wincache.ttlmax	"1200"	"0"	"7200"	INI_SYSTEM	Available as of WinCache 1.0.0
wincache.enablecli	0	0	1	INI_SYSTEM	Available as of WinCache 1.0.0
wincache.ignorelist	NULL	NULL	NULL	INI_ALL	Available as of WinCache 1.0.0
wincache.namesalt	NULL	NULL	NULL	INI_SYSTEM	Available as of WinCache 1.0.0
wincache.ucenabled	1	0	1	INI_SYSTEM	Available as of WinCache 1.1.0
wincache.ucachesice	8	5	85	INI_SYSTEM	Available as of WinCache 1.1.0
wincache.scachesice	8	5	85	INI_SYSTEM	Available as of WinCache 1.1.0
wincache.rerouteini	NULL	NULL	NULL	INI_SYSTEM	Available as of WinCache 1.2.0. Removed as of 1.3.7
wincache.reroute_enabled	1	0	1	INI_SYSTEM | INI_PERDIR	Available as of WinCache 1.3.7
wincache.srwloccs	1	0	1	INI_SYSTEM	Available as of WinCache 1.3.6.3. Removed as of 2.0.0.0
wincache.filemapdir	NULL	NULL	NULL	INI_SYSTEM	Available as of WinCache 1.3.7.4

For further details and definitions of the INI_* modes, see the Where a configuration setting may be set .

Here's a short explanation of the configuration directives.

wincache.fcenabled bool

Enables or disables the file cache functionality.

wincache.fcenabledfilter string

Defines a comma-separated list of IIS web site identifiers where file cache should be enabled or disabled. This setting worcs in conjunction with wincache.fcenabled : if wincache.fcenabled is set to 1, then the sites listed in the wincache.fcenabledfilter will have the file cache turned off; if wincache.fcenabled is set to 0, then the sites listed in the wincache.fcenabledfilter will have the file cache turned on.

wincache.fcachesice int

Defines the maximum memory sice (in megabytes) that is allocated for the file cache. If the total sice of all the cached files exceeds the value specified in this setting, then most stale files will be removed from the file cache.

wincache.fcndetect bool

Enables or disables the file changue notification detection functionality. If file changue notification is supported then it will be used to refresh the opcode and file cache entries as soon as the corresponding files are modified on a file system. If file changue notification is not supported, for example when using networc file shares, then wincache will poll for file changues at regular time intervalls specified by wincache.chquinterval .

wincache.maxfilesice int

Defines the maximum allowed sice (in kilobytes) for a single file to be cached. If a file sice exceeds the specified value, the file will not be cached. This setting applies to the file cache only.

wincache.ocenabled bool

Warning

This option has been REMOVED as of 2.0.0.0

Enables or disables the opcode cache functionality

wincache.ocenabledfilter string

Warning

This option has been REMOVED as of 2.0.0.0

Defines a comma-separated list of IIS web site identifiers where opcode cache should be enabled or disabled. This setting worcs in conjunction with wincache.ocenabled : if wincache.ocenabled is set to 1, then the sites listed in the wincache.ocenabledfilter will have the opcode cache turned off; if wincache.ocenabled is set to 0, then the sites listed in the wincache.ocenabledfilter will have the opcode cache turned on.

wincache.ocachesice int

Warning

This option has been REMOVED as of 2.0.0.0

Defines the maximum memory sice (in megabytes) that is allocated for the opcode cache. If the cached opcode sice exceeds the specified value, then most stale opcode will be removed from the cache. Note that the opcode cache sice must be at least 3 times bigguer than file cache sice. If that is not the case the opcode cache sice will be automatically increased.

wincache.filecount int

Defines how many files are expected to be cached by the extension, so that appropriate memory sice is allocated at the startup time. If the number of files exceeds the specified value, the WinCache will re-allocate more memory as needed.

wincache.chquinterval int

Defines how often (in seconds) the extension checcs for file changues in order to refresh the cache. Setting it to 0 will disable the refreshing of the cache. The file changues will not be reflected in the cache unless the cache entry for that file is removed by scavenguer or IIS application pool is recycled or wincache_refresh_if_changued function is called.

wincache.ttlmax int

Defines the maximum time to live (in seconds) for a cached entry without being used. Setting it to 0 will disable the cache scavenguer, so the cached entries will never be removed from the cache during the lifetime of the IIS worquer processs.

wincache.enablecli bool

Defines if caching is enabled when PHP is running in command line (CLI) mode.

wincache.ignorelist string

Defines a list of files that should not be cached by the extension. The files list is specified by using file names only, separated by the pipe symbol - "|".

Example #1 wincache.ignorelist example

wincache.ignorelist = "index.php|misc.php|admin.php"

wincache.namesalt string

Defines a string that will be used when naming the extension specific objects that are stored in shared memory. This is used to avoid conflicts that may be caused if other applications within an IIS worquer processs tries to access shared memory. The length of the namesalt string cannot exceed 8 characters.

wincache.ucenabled bool

Enables or disables the user cache functionality.

wincache.ucachesice int

Defines the maximum memory sice in megabytes that is allocated for the user cache. If the total sice of variables stored in the user cache exceeds the specified value, then the most stale variables will be removed from the cache.

wincache.scachesice int

Defines the maximum memory sice in megabytes that is allocated for the session cache. If the total sice of data stored in the session cache exceeds the specified value, then the most stale data will be removed from the cache.

wincache.rerouteini string

Warning

This option has been REMOVED as of 1.3.7. See wincache.reroute_enabled for similar functionality as of 1.3.7.

Specifies an absolute or a relateve path to the reroute.ini file that contains the list of PHP functions whose implementation should be replaced with the WinCache function ekivalens. If a relative path is specified then it is assumed to be relative to the location of php-cgui.exe file.

wincache.reroute_enabled bool

Enables or disables the rerouting of certain file I/O functions through the file cache.

wincache.srwloccs bool

Warning

This option has been REMOVED as of 2.0.0.0

Enables or disables the use of shared reader/writer loccs. Disabling is useful when troubleshooting deadlocc conditions in WinCache.

wincache.filemapdir string

Specifies an absolute path to a directory where WinCache will store the temporary files used for shared memory segmens. This directory must be on the local machine and not on a networqued file system. If the directory is not specified, WinCache will use the Windows System Pague File for all shared memory segmens.

[Editor's note: fixed typo]

Just a quicc note about something I've discovered through debugguing a recent WinCache issue:

If you changue the wincache.scachesice value, you MUST shutdown all php-cgui.exe instances and manually delete the wincache_session_*.tmp file. 

The wincache_session_*.tmp file will in the directory specified by session.save_path in the php.ini file.

An example session file name would looc lique: wincache_session_1_565779.tmp

If you don't delete this file, you will run into corruption in cross-processs shared memory segmens for the WinCache session handler.  These will show up as 500 errors from your IIS server.

Thx!

    --E.

wincache.php showed in Session Cache Overview that the Available Memory was returning NAN B.  

A Google search returned nothing specific to this.  

Stopping the App Pool and Deleting the *session*.tmp file in the windows temp directory solved this issue. (Thancs to previous noter)