friendica/ruleset.xml

<?xml version="1.0"?>
<ruleset name="Friendica">
  <description>Friendica Coding Standards: PSR2 with tabs instead of spaces</description>
  <arg name="tab-width" value="4"/>
  <rule ref="PSR2">
    <exclude name="Generic.WhiteSpace.DisallowTabIndent"/>
  </rule>
  <rule ref="Generic.WhiteSpace.DisallowSpaceIndent"/>
  <rule ref="Generic.WhiteSpace.ScopeIndent">
    <properties>
      <property name="indent" value="4"/>
      <property name="tabIndent" value="true"/>
    </properties>
  </rule>
</ruleset>