Fixed validation rule digits does not support int. (#2358)

* Fix strict_types=1, digits rule preg_match parameter 2 to be string error

* Fixed validation rule `digits` does not support `int`.

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

Author: kids-return

src/Concerns/ValidatesAttributes.php

@@ -301,8 +301,9 @@ public function validateDigits(string $attribute, $value, array $parameters): bo
     {
         $this->requireParameterCount(1, $parameters, 'digits');
 
+        $value = (string) $value;
         return ! preg_match('/[^0-9]/', $value)
-            && strlen((string) $value) == $parameters[0];
+            && strlen($value) == $parameters[0];
     }
 
     /**
@@ -314,7 +315,8 @@ public function validateDigitsBetween(string $attribute, $value, array $paramete
     {
         $this->requireParameterCount(2, $parameters, 'digits_between');
 
-        $length = strlen((string) $value);
+        $value = (string) $value;
+        $length = strlen($value);
 
         return ! preg_match('/[^0-9]/', $value)
             && $length >= $parameters[0] && $length <= $parameters[1];

tests/Cases/ValidationValidatorTest.php

@@ -1469,6 +1469,9 @@ public function testValidateDigits()
         $v = new Validator($trans, ['foo' => '123'], ['foo' => 'Digits:200']);
         $this->assertFalse($v->passes());
 
+        $v = new Validator($trans, ['foo' => 123], ['foo' => 'Digits:200']);
+        $this->assertFalse($v->passes());
+
         $v = new Validator($trans, ['foo' => '+2.37'], ['foo' => 'Digits:5']);
         $this->assertTrue($v->fails());
 
@@ -1482,6 +1485,9 @@ public function testValidateDigits()
         $v = new Validator($trans, ['foo' => 'bar'], ['foo' => 'digits_between:1,10']);
         $this->assertFalse($v->passes());
 
+        $v = new Validator($trans, ['foo' => 123], ['foo' => 'digits_between:4,5']);
+        $this->assertFalse($v->passes());
+
         $v = new Validator($trans, ['foo' => '123'], ['foo' => 'digits_between:4,5']);
         $this->assertFalse($v->passes());