array_merge optimization

Author: ondrejmirtes

src/Type/Php/ArrayMergeFunctionDynamicReturnTypeExtension.php

@@ -33,6 +33,7 @@ public function getTypeFromFunctionCall(FunctionReflection $functionReflection,
 		$returnedArrayBuilder = ConstantArrayTypeBuilder::createEmpty();
 		$returnedArrayBuilderFilled = false;
 		$nonEmpty = false;
+		$offsetCount = 0;
 		foreach ($functionCall->args as $arg) {
 			$argType = $scope->getType($arg->value);
 
@@ -45,6 +46,10 @@ public function getTypeFromFunctionCall(FunctionReflection $functionReflection,
 				foreach ($arrays as $constantArray) {
 					foreach ($constantArray->getKeyTypes() as $i => $keyType) {
 						$returnedArrayBuilderFilled = true;
+						$offsetCount++;
+						if ($offsetCount > ConstantArrayTypeBuilder::ARRAY_COUNT_LIMIT) {
+							$returnedArrayBuilder->degradeToGeneralArray();
+						}
 
 						$returnedArrayBuilder->setOffsetValueType(
 							is_numeric($keyType->getValue()) ? null : $keyType,