Cake\Localized\Validation\IrValidation::numeric PHP Method

    public static function numeric($check)
    {
        $pattern = '/[^\\x{06F0}-\\x{06F9}\\x]+/u';
        return !preg_match($pattern, $check);
    }

 /**
  * test the numeric method of IrValidation
  *
  * @return void
  */
 public function testNumeric()
 {
     $this->assertTrue(IrValidation::numeric('۱۲۳۴۵۶۷۸۹۰'));
     $this->assertFalse(IrValidation::numeric('teststring'));
     $this->assertFalse(IrValidation::numeric('1234567890'));
     $this->assertFalse(IrValidation::numeric('١٢٣٤٥٦٧٨٩٠'));
 }