When using PHP, the PEAR Package Manager is already installed unless one has used the
If one uses a version of PHP that is supplied by Unix/Linux/BSD distributors it may be necessary to manually install PEAR. Users should consult the documentation for the respective distribution in this case.
If you want to re-install the Package Manager, you can use the following provisional way:
$ wget http://pear.php.net/go-pear.phar $ php go-pear.phar
Please note, you may need to install the wget package via your Unix/Linux/BSD package manager. On Debian and Ubuntu this is done via:
$ sudo apt-get install wget
Alternatively, download the go-pear.phar file via your browser.
If the process just exits without any output, your syslog will probably contain the following lines:suhosin: ALERT - Include filename ('phar://go-pear.phar/index.php') is an URL that is not allowed (attacker 'REMOTE_ADDR not set', file '/root/go-pear.phar', line 1236)
To work around this problem, enable the phar in
/etc/php5/conf.d/suhosin.ini:suhosin.executor.include.whitelist = phar