MySQL PHP API  /  Mysqlnd Memcache plugin  /  Predefined Constants

11.6 Predefined Constants

Copyright 1997-2014 the PHP Documentation Group.

The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.

MySQL Memcache Plugin related


Default regular expression (PCRE style) used for matching SELECT statements that will be mapped into a MySQL Memcache Plugin access point, if possible.

It is also possible to use mysqlnd_memcache_set, but the default approach is using this regular expression for pattern matching.


The version number of this plugin can be obtained by using MYSQLND_MEMCACHE_VERSION or MYSQLND_MEMCACHE_VERSION_ID. MYSQLND_MEMCACHE_VERSION is the string representation of the numerical version number MYSQLND_MEMCACHE_VERSION_ID, which is an integer such as 10000. Developers can calculate the version number as follows.

Version (part)Example
Major*100001*10000 = 10000
Minor*1000*100 = 0
Patch0 = 0

Plugin version string, for example, 1.0.0-alpha.
Plugin version number, for example, 10000.

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