ruleset.xml

<?xml version="1.0"?>

<ruleset name="PHPCompatibility">
    <description>Coding Standard that checks for PHP version compatibility.</description>

    <!-- This rule covers checking for non-magic methods using __ prefix. -->
    <!-- Covers part 2 of issue 64: https://github.com/wimg/PHPCompatibility/issues/64 -->
    <rule ref="Generic.NamingConventions.CamelCapsFunctionName">
        <exclude name="Generic.NamingConventions.CamelCapsFunctionName.NotCamelCaps" />
        <exclude name="Generic.NamingConventions.CamelCapsFunctionName.ScopeNotCamelCaps" />
    </rule>
    <rule ref="Generic.NamingConventions.CamelCapsFunctionName.MethodDoubleUnderscore">
        <type>warning</type>
        <!-- Original message: Method name "%s" is invalid; only PHP magic methods should be prefixed with a double underscore -->
        <message>Method name "%s" is discouraged; PHP has reserved all method names with a double underscore prefix for future use</message>
    </rule>
    <rule ref="Generic.NamingConventions.CamelCapsFunctionName.FunctionDoubleUnderscore">
        <type>warning</type>
        <!-- Original message: Function name "%s" is invalid; only PHP magic methods should be prefixed with a double underscore -->
        <message>Function name "%s" is discouraged; PHP has reserved all method names with a double underscore prefix for future use</message>
    </rule>

</ruleset>