Easy installation of PHP extensions in official PHP Docker images

This repository contains a script that can be used to easily install a PHP extension inside the official PHP Docker images.

Known limits

Currently the script requires the Debian-based images (no Alpine).

Usage

Here's a sample Dockerfile that installs the GD and xdedub extensions inside a docker image:

FROM php:7.2-cli

ADD https://raw.githubusercontent.com/mlocati/docker-php-extension-installer/master/install-php-extensions /usr/local/bin/

RUN chmod uga+x /usr/local/bin/install-php-extensions && sync && \
    install-php-extensions gd xdebug

Installation via COPY --from

FROM php:7.2-cli

COPY --from=mlocati/php-extension-installer /usr/bin/install-php-extensions /usr/bin/

RUN install-php-extensions gd xdebug

install-php-extensions will install all the required APT packages.
If you want to remove the APT development packages (which shouldn't be needed after the PHP extensions have been installed) and other no longer required packages, you can use the --cleanup option (EXPERIMENTAL):

install-php-extensions --cleanup gd xdebug

Supported PHP extensions

Extension	PHP 5.6	PHP 7.0	PHP 7.1	PHP 7.2	PHP 7.3	PHP 7.4
amqp	V	V	V	V	V	V
apcu	V	V	V	V	V	V
bcmath	V	V	V	V	V	V
bz2	V	V	V	V	V	V
calendar	V	V	V	V	V	V
cmark		V	V	V	V	V
dba	V	V	V	V	V	V
enchant	V	V	V	V	V	V
exif	V	V	V	V	V	V
gd	V	V	V	V	V	V
gettext	V	V	V	V	V	V
gmp	V	V	V	V	V	V
igbinary	V	V	V	V	V	V
imagick	V	V	V	V	V	V
imap	V	V	V	V	V	V
interbase	V	V	V	V	V
intl	V	V	V	V	V	V
ldap	V	V	V	V	V	V
mcrypt	V	V	V	V	V	V
memcache	V
memcached	V	V	V	V	V	V
mysql	V
mysqli	V	V	V	V	V	V
odbc	V	V	V	V	V	V
opcache	V	V	V	V	V	V
pcntl	V	V	V	V	V	V
pcov		V	V	V	V	V
pdo_dblib	V	V	V	V	V	V
pdo_firebird	V	V	V	V	V	V
pdo_mysql	V	V	V	V	V	V
pdo_odbc	V	V	V	V	V	V
pdo_pgsql	V	V	V	V	V	V
pdo_sqlsrv		V	V	V	V
pgsql	V	V	V	V	V
pspell	V	V	V	V	V
pthreads	V	V
recode	V	V	V	V	V
redis	V	V	V	V	V
shmop	V	V	V	V	V
snmp	V	V	V	V	V
soap	V	V	V	V	V
sockets	V	V	V	V	V
solr	V	V	V	V	V
sqlsrv		V	V	V	V
ssh2	V	V	V	V	V
sybase_ct	V
sysvmsg	V	V	V	V	V
sysvsem	V	V	V	V	V
sysvshm	V	V	V	V	V
tidy	V	V	V	V	V
timezonedb	V	V	V	V	V
uopz	V	V	V	V	V
uuid	V	V	V	V	V
wddx	V	V	V	V	V
xdebug	V	V	V	V	V
xmlrpc	V	V	V	V	V
xsl	V	V	V	V	V
yaml	V	V	V	V	V
zip	V	V	V	V	V

PS: the pre-installed PHP extensions are excluded from this list. You can list them with the following command (change php:7.2-cli to reflect the PHP version you are interested in):

docker run --rm -it php:7.2-cli php -m

Special requirements

Some extension has special requirements:

Extension	Requirements
pthreads	Requires images with PHP compiled with thread-safety enabled (zts).

How to contribute

• If you want to add support for a new PHP extension:
  1. change the install-php-extensions script
  2. update the data/supported-extensions file, adding a new line with the handle of the extension and the list of supported PHP versions
  3. if the extension requires ZTS images:
     add a new line to the data/special-requirements file, with the extension handle followed by a space and zts
• If you want to change the list of supported PHP versions for an already supported extension:
  1. change the install-php-extensions script
  2. update the data/supported-extensions file, adding the new PHP version to the existing line corresponding to the updated extension
• If you change some code that affects one or more extensions, please add a line with Test: extension1, extension2 to the message of one of the pull request commits. Here's an example of a commit message:

  Improve the GD and ZIP extensions
  
  Test: gd, zip