Propose a package. You propose a package by going to
http://pear.php.net/ and clicking New Proposal in the left-hand sidebar.
The proposal process is meant to help you pick a good name for your package, and to ensure that standards are being followed from the very first release. The PEAR developer community manages PEAR's namespace. When you create a package, you occupy part of that namespace, so the PEAR community wants to ensure that your package has a function that fits with the name.
The proposal goes through a voting phase that is open to all registered PEAR package developers. Other PEAR developers may look at whether your package offers functionality that exists in another package. If it does, they may propose incorporating your code into that package, or request that you justify the need for another package. When voting closes, your package proposal will be accepted, accepted with comments, or rejected. "Accepted with comments" means that the proposal is accepted on the condition that you change something.