php-phpbb/build/code_sniffer/ruleset-minimum.xml

<?xml version="1.0"?>
<ruleset name="phpBB Minimum Standard">

 <description>phpBB minimum coding standard</description>

 <!-- All code files MUST use only UTF-8 without BOM. -->
 <rule ref="Generic.Files.ByteOrderMark" />

 <!-- All code files MUST use the Unix LF (linefeed) line ending. -->
 <rule ref="Generic.Files.LineEndings" />

 <!-- Tabs MUST be used for indentation -->
 <rule ref="Generic.WhiteSpace.DisallowSpaceIndent" />

 <!-- ALL braces MUST be on their own lines. -->
 <rule ref="./phpbb/Sniffs/ControlStructures/OpeningBraceBsdAllmanSniff.php" />

</ruleset>