phpcs.xml

<?xml version="1.0"?>
<ruleset name="PHP_CodeSniffer">

  <!-- Don't hide tokenizer exceptions -->
  <rule ref="Internal.Tokenizer.Exception">
    <type>error</type>
  </rule>

  <rule ref="Generic.PHP.DeprecatedFunctions"/>
  <rule ref="Generic.Commenting.Todo"/>
  <rule ref="Generic.Commenting.Fixme"/>
  <rule ref="Generic.CodeAnalysis.UselessOverridingMethod"/>
  <rule ref="Generic.CodeAnalysis.UnnecessaryFinalModifier"/>
  <rule ref="Generic.CodeAnalysis.UnconditionalIfStatement"/>
  <rule ref="Generic.CodeAnalysis.JumbledIncrementer"/>
  <rule ref="Generic.CodeAnalysis.ForLoopShouldBeWhileLoop"/>
  <rule ref="Generic.CodeAnalysis.EmptyStatement"/>

  <!-- https://github.com/squizlabs/PHP_CodeSniffer/pull/1725 -->
  <rule ref="Generic.CodeAnalysis.AssignmentInCondition"/>

  <rule ref="Generic.Strings.UnnecessaryStringConcat">
    <properties>
      <property name="allowMultiline" value="true" />
      <property name="error" value="false" />
    </properties>
  </rule>

  <rule ref="Generic.PHP.BacktickOperator">
    <type>error</type>
  </rule>

  <rule ref="MySource.PHP.EvalObjectFactory">
    <type>error</type>
  </rule>
  <rule ref="Squiz.PHP.Eval">
    <type>error</type>
  </rule>
  <rule ref="Squiz.PHP.NonExecutableCode"/>
  <rule ref="Squiz.Scope.StaticThisUsage"/>

</ruleset>