library.xml

<?xml version="1.0" encoding="UTF-8"?>
<phar xmlns="https://phar.io/xml/manifest/1.0">
    <contains name="some/library" version="1.0.0" type="library" />
    <copyright>
        <author name="Reiner Zufall" email="reiner@zufall.de"/>
        <license type="BSD-3-Clause" url="https://domain.tld/LICENSE"/>
    </copyright>
    <requires>
        <php version="7.0"/>
    </requires>
</phar>