Throw exception for an ambiguous parameter

src/Exceptions/InvalidParameterException.php

@@ -4,6 +4,17 @@
 
 class InvalidParameterException extends \Exception
 {
+    /**
+     * Ambiguous parameter static constructor.
+     *
+     * @param string $parameter
+     * @return static
+     */
+    public static function ambiguous($parameter)
+    {
+        return new static('Ambiguous phone validation parameter: "' . $parameter . '". This parameter is recognized as an input field and as a phone type. Please rename the input field.');
+    }
+
     /**
      * Invalid parameters static constructor.
      *

src/Validation/Phone.php

@@ -108,6 +108,11 @@ protected function extractParameters($attribute, array $parameters, array $data)
 
         // Attempt to retrieve the field's value.
         if ($inputCountry = Arr::get($data, $inputField)) {
+
+            if (static::isValidType($inputField)) {
+                throw InvalidParameterException::ambiguous($inputField);
+            }
+
             $parameters[] = $inputCountry;
         }
 

tests/PhoneValidatorTest.php

@@ -269,6 +269,17 @@ public function it_throws_an_exception_for_invalid_parameters()
             ['field' => 'phone:BE,xyz,mobile,abc']
         )->passes();
     }
+
+    /** @test */
+    public function it_throws_an_exception_for_ambiguous_parameters()
+    {
+        $this->expectException(InvalidParameterException::class);
+        $this->expectExceptionMessage('mobile');
+
+        $this->validator->make(
+            ['mobile' => '0470123456', 'mobile_country' => 'BE'],
+            ['mobile' => 'phone:mobile']
+        )->passes();
     }
 
     /** @test */