Arch Linux

Recursive

Member

Registered: 2009-03-18

Posts: 5

[SOLVED] PHP shared memory functions are not defined

I have a server set up with Apache + PHP using the SAPI module. When I try to load a php file off my server that uses the shm_attach() function, it fails. The error log says: " PHP Fatal error:  Call to undefined function shm_attach()" . According to the PHP website (http://www.php.net/manual/en/sem.installation.php), this function should be compiled in if the --enable-sysvshm option is passed to configure. The output of phpinfo() indicates that this flag was used for the Arch Linux build of PHP (it contains the flags "'--enable-sysvmsg=shared' '--enable-sysvsem=shared' '--enable-sysvshm=shared'", which should enable not only shared memory but all of the PHP IPC commands). So, what gives? Why am I getting this error?

Last edited by Recursive (2009-10-04 08:21:44)

foutrelis

Developer

From: Athens, Greece

Registered: 2008-07-28

Posts: 705

Website

Re: [SOLVED] PHP shared memory functions are not defined

I believe that '--enable-foo=shared' compiles 'foo' as a separate extension (instead of built-in). Try uncommenting the relevant extensions in /etc/php/php.ini:

;extension=sysvmsg.so
;extension=sysvsem.so
;extension=sysvshm.so

Recursive

Member

Registered: 2009-03-18

Posts: 5

Re: [SOLVED] PHP shared memory functions are not defined

That was the problem. Thanks much.