The new PEAR installer release adds PHP 7 support while dropping support for PHP 4 - 5.3. It also fixes a nasty SSL issue that made it hard to use on PHP 5.6. With the update, strict warnings about static calls to a non-static PEAR::isError() are a thing of the past. 
I've just published the first preview version: PEAR 1.10.0dev1. 
You can upgrade your existing PEAR version with the following command: 
$ pear upgrade PEAR-1.10.0dev1
  Pre-release versions of go-pear.phar and install-pear-nozlib.phar can be temporarily be found at 
- http://pear.php.net/~cweiske/1.10.0dev1/go-pear.phar
 - http://pear.php.net/~cweiske/1.10.0dev1/install-pear-nozlib.phar
 
Please report any bugs you find on the PEAR bug tracker or on the pear-dev mailing list.