diff --git a/.phan/config.php b/.phan/config.php
new file mode 100644
index 0000000..22f5f14
--- /dev/null
+++ b/.phan/config.php
@@ -0,0 +1,40 @@
+<?php
+
+$cfg = require __DIR__ . '/../vendor/mediawiki/mediawiki-phan-config/src/config.php';
+
+$cfg['suppress_issue_types'] = array_merge( $cfg['suppress_issue_types'], [
+ 	'PhanUndeclaredInterface',
+	'PhanUndeclaredTypeParameter',
+	'PhanUndeclaredClassMethod',
+	'PhanUndeclaredFunction',
+	'PhanUndeclaredConstant',
+	'PhanUndeclaredTypeReturnType',
+	'PhanPossiblyUndeclaredVariable',
+	'PhanTypePossiblyInvalidDimOffset',
+	'PhanTypeInvalidDimOffset',
+	'PhanUndeclaredConstantOfClass',
+	'PhanUndeclaredExtendedClass',
+	'PhanTypeMismatchReturnNullable',
+	'PhanUndeclaredExtendedClass',
+	'PhanUndeclaredMethod',
+	'PhanUndeclaredProperty',
+	'PhanPluginDuplicateAdjacentStatement',
+	'PhanImpossibleCondition',
+	'PhanUndeclaredClassInstanceof',
+	'PhanTypeArraySuspiciousNullable',
+	'PhanParamTooMany',
+	'PhanPluginDuplicateConditionalNullCoalescing',
+	'PhanRedundantCondition',
+	'PhanPluginDuplicateConditionalTernaryDuplication',
+	'PhanTypeMismatchReturnProbablyReal',
+	'PhanUndeclaredVariableDim',
+	'PhanUndeclaredClass',
+	'PhanUnextractableAnnotation',
+	'PhanTypeSuspiciousStringExpression',
+	'PhanImpossibleTypeComparison',
+	'PhanTypeMismatchArgument'
+] );
+
+$cfg['scalar_implicit_cast'] = true;
+
+return $cfg;