43 lines
1.4 KiB
Markdown
43 lines
1.4 KiB
Markdown
# How to install Composer programmatically?
|
|
|
|
As noted on the download page, the installer script contains a
|
|
signature which changes when the installer code changes and as such
|
|
it should not be relied upon long term.
|
|
|
|
An alternative is to use this script which only works with unix utils:
|
|
|
|
```bash
|
|
#!/bin/sh
|
|
|
|
EXPECTED_SIGNATURE=$(wget -q -O - https://composer.github.io/installer.sig)
|
|
php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
|
|
ACTUAL_SIGNATURE=$(php -r "echo hash_file('SHA384', 'composer-setup.php');")
|
|
|
|
if [ "$EXPECTED_SIGNATURE" != "$ACTUAL_SIGNATURE" ]
|
|
then
|
|
>&2 echo 'ERROR: Invalid installer signature'
|
|
rm composer-setup.php
|
|
exit 1
|
|
fi
|
|
|
|
php composer-setup.php --quiet
|
|
RESULT=$?
|
|
rm composer-setup.php
|
|
exit $RESULT
|
|
```
|
|
|
|
The script will exit with 1 in case of failure, or 0 on success, and is quiet
|
|
if no error occurs.
|
|
|
|
Alternatively if you want to rely on an exact copy of the installer you can fetch
|
|
a specific version from github's history. The commit hash should be enough to
|
|
give it uniqueness and authenticity as long as you can trust the GitHub servers.
|
|
For example:
|
|
|
|
```bash
|
|
wget https://raw.githubusercontent.com/composer/getcomposer.org/1b137f8bf6db3e79a38a5bc45324414a6b1f9df2/web/installer -O - -q | php -- --quiet
|
|
```
|
|
|
|
You may replace the commit hash by whatever the last commit hash is on
|
|
https://github.com/composer/getcomposer.org/commits/master
|