Ubuntu – How to install/enable GMP (math functions) for PHP on Ubuntu

apache-2.2packagesPHPUbuntu

When calling a gmp math function like gmp_mod, I get:

Fatal error: Call to undefined function gmp_mod()

I have installed the php5-gmp package and restarted the web-server, and the function is still undefined. The server is running Ubuntu 10.04 and PHP is running as an Apache module. All software was installed from official packages.

How do I enable the GMP math functions in PHP? I'm looking for a solution that uses official packages, not compiling from source.

Best Answer

Here is the way which worked for me :

Installed GMP with apt-get install php5-gmp
Added extension=php_gmp.so to php.ini

Et voilà !

phpinfo() sample :

gmp
gmp support     enabled
GMP version     4.3.2

It works fine here (Debian), so I suppose it will be ok for Ubuntu too.

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Oh, I fixed the problem by following the information in this forum:

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Basically, I looked in my /var/log/mail.log error file and found the error message "unable to look up public/pickup: no such file or directory".

I then issued the command

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I made sure sendmail wasn't still running by doing a ps -aux and killing it

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root      2363  0.0  0.5   9228  1888 ?        Ss   Jan28   0:20 sendmail: MTA: accepting connections          
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I restarted postfix

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The Apache functions are only available if running the httpd SAPI, also known as mod_php.

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