PHP error: "The zip extension and unzip command are both missing, skipping."

Question

When I run a composer update I get this error message:

Loading composer repositories with package information
Updating dependencies (including require-dev)
    Failed to download psr/log from dist: The zip extension and unzip command are both missing, skipping.
The php.ini used by your command-line PHP is: /etc/php/7.0/cli/php.ini
    Now trying to download from source

What do I need to do to enable the zip and unzip commands so that composer can download dependencies?

Solution 1

Depending on your flavour of Linux and PHP version these may vary.

(sudo) yum install zip unzip php-zip
(sudo) apt install zip unzip php-zip

This is a very commonly asked question, you'll be able to find more useful info in the aether by searching <distro> php <version> zip extension.

Solution 2

For servers with PHP 5.6

sudo apt-get install zip unzip php5.6-zip

Solution 3

Not to belabor the point, but if you are working in a Dockerfile, you would solve this particular issue with Composer by installing the unzip utility. Below is an example using the official PHP image to install unzip and the zip PHP extension for good measure.

FROM php:7.4-apache
# Install Composer
COPY --from=composer /usr/bin/composer /usr/bin/composer
# Install unzip utility and libs needed by zip PHP extension 
RUN apt-get update && apt-get install -y \
    zlib1g-dev \
    libzip-dev \
    unzip
RUN docker-php-ext-install zip

This is a helpful GitHub issue where the above is lovingly lifted from.

Solution 4

For Debian Jessie (which is the current default for the PHP image on Docker Hub):

apt-get install --yes zip unzip php-pclzip

You can omit the --yes, but it's useful when you're RUN-ing it in a Dockerfile.

Solution 5

For older Ubuntu distros i.e 16.04, 14.04, 12.04 etc

sudo apt-get install zip unzip php7.0-zip

View more solutions

Comments

[John Walker]

Workaround: Use composer update --prefer-source I had this issue when trying to composer update phpspec. Failed to download symfony/polyfill-ctype from dist: The zip extension and unzip command are both missing, skipping. I am on a Mac and had problems making Homebrew work to install php extensions. So, my quick fix was to force composer not to need to use zip by adding the --prefer-source option. This means it downloads the repo instead of a zipped package. Not a long term solution but handy to know.

[Haring10]

You are a life saver, my friend.

[lightup]

including 16.04

[Olaf Dietsche]

For Ubuntu apt-get install php-zip is sufficient

[thaerlabs]

thanks for sharing Peter, saved me some time looking for the right version of php-zip :D

[elbowlobstercowstand]

@OlafDietsche How do you know/determine when to install php[version]-package vs php-package for any given package? Would love to know as I usually just go with the php[version]-package version, but perhaps that's not optimal…

[Olaf Dietsche]

@elbowlobstercowstand php-<package> is the default version. These packages just depend on the most recent version. If you need some specific (usually older) version, you install php<version>-<package>.

[umarbilal]

Worked for me. Thanks

[Pathros]

It also works for # yum install zip unzip php7.2-zip (on CentOS 7)

[jgmjgm]

People keep giving instructions to install php-zip as well as zip/unzip. It makes no sense that it needs both.

[naman1994]

people using docker (nov '19) use : RUN apt-get install -y zlib1g-dev \ && docker-php-ext-install zip

[Thomas Praxl]

I found that @naman1994's proposal is missing libzip-dev for dockerfiles from php:7.3. So it should be RUN … apt-get install -yqq … zlib1g-dev libzip-dev && docker-php-ext-install zip

[Thomas Praxl]

Also, you really should install unzip. Otherwise composer will complain: As there is no 'unzip' command installed zip files are being unpacked using the PHP zip extension. This may cause invalid reports of corrupted archives. Besides, any UNIX permissions (e.g. executable) defined in the archives will be lost. Installing 'unzip' may remediate them. So it should be RUN … apt-get install -yqq … zlib1g-dev libzip-dev unzip && docker-php-ext-install zip

[Bobby Axe]

sudo apt-get install zip unzip php7.4-zip // according to your PHP version

[ortonomy]

I enjoyed your prose in this answer. Thank you

[jpruiz114]

In my case, doing apt-get install -y zlib1g-dev libzip-dev unzip gets the error gone.

[Vladimir Vukanac]

If warning comes from composer executed in php:7.4-cli with Dockerfile, by installing just zip warning goes away. RUN apt-get update && apt-get install -y zip. It didn't request for unzip, libs nor docker-php-ext...