In order to have these functions available, you must compile PHP with GMP support by using the --with-gmp option.
Note that this parameter requires a path, as in --with-gmp=DIR, if gmp is installed in a non-standard location, which is almost always the case when you are building your own PHP installation in your home directory. Obvious, but it's an easy mistake.
Under Windows you will need to uncomment the line ;extension=php_gmp.dll within the php.ini and restart Apache.
With PHP 5.3 on Windows, you need to use the VC9 build, otherwise you will not have the dll to enable GMP
on ubuntu you can get it from Synaptic Package Manager just search words "gmp",you'll find it.
On Debian platforms, make sure you install the gmp development library first: sudo apt-get install libgmp-dev Just like other extensions, you need the libs installed before php compile will gracefully complete.
On ArchLinux php 5.4.14-1 I had to uncomment the line extension=gmp.so in /etc/php/php.ini file. Probably, restart of web server (e.g. Apache) is required if working from web.
on Ubuntu Server: sudo apt-get install libgmp-dev sudo apt-get install php5-gmp sudo service apache2 reload
Simple run: sudo apt install php7.0-gmp
Under Windows you will need to un-comment the line in your php.ini file ;extension=gmp within the php.ini and restart Apache.
ubuntu sudo apt install php-gmp
On Debian platforms, make sure you install the gmp development library first: sudo apt-get install libgmp-dev Just like other extensions, you need the libs installed before php compile will gracefully complete all.
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Note that this parameter requires a path, as in --with-gmp=DIR, if gmp is installed in a non-standard location, which is almost always the case when you are building your own PHP installation in your home directory.
Obvious, but it's an easy mistake.
Under Windows you will need to uncomment the line
;extension=php_gmp.dll
within the php.ini and restart Apache.
With PHP 5.3 on Windows, you need to use the VC9 build, otherwise you will not have the dll to enable GMPon ubuntu you can get it from Synaptic Package Managerjust search words "gmp",you'll find it.
On Debian platforms, make sure you install the gmp development library first:
sudo apt-get install libgmp-dev
Just like other extensions, you need the libs installed before php compile will gracefully complete.
On ArchLinux php 5.4.14-1 I had to uncomment the line
extension=gmp.so
in /etc/php/php.ini file.
Probably, restart of web server (e.g. Apache) is required if working from web.
on Ubuntu Server:
sudo apt-get install libgmp-dev
sudo apt-get install php5-gmp
sudo service apache2 reload
Simple run:sudo apt install php7.0-gmp
Under Windows you will need to un-comment the line in your php.ini file
;extension=gmp
within the php.ini and restart Apache.
ubuntu
sudo apt install php-gmp
On Debian platforms, make sure you install the gmp development library first:
sudo apt-get install libgmp-dev
Just like other extensions, you need the libs installed before php compile will gracefully complete all.