Fixed validate rule date does not work as expected when the value isn't string. (#3959)

* Added suggest requirement for `hyperf/database`.

* Added test cases

Co-authored-by: 李铭昕 <[email protected]>

Author: leihenshang

src/Concerns/ValidatesAttributes.php

@@ -220,7 +220,7 @@ public function validateDate(string $attribute, $value): bool
             return true;
         }
 
-        if ((! is_string($value) && ! is_numeric($value)) || strtotime($value) === false) {
+        if ((! is_string($value) && ! is_numeric($value)) || strtotime((string) $value) === false) {
             return false;
         }
 

tests/Cases/ValidateAttributesTest.php

@@ -61,4 +61,11 @@ public function testValidateAlphaNum()
         $this->assertFalse($validator->validateAlphaNum('', '123_f1'));
         $this->assertFalse($validator->validateAlphaNum('', 'xxx_yy'));
     }
+
+    public function testValidateDate()
+    {
+        $validator = new ValidatesAttributesStub();
+
+        $this->assertFalse($validator->validateDate('', 123));
+    }
 }