Yii 内置过滤器集合(规则)

参照 http://www.yiiframework.com/doc-2.0/yii-validators-validator.html#$builtInValidators-detail

验证器是所有验证程序的基类。

子类应该覆盖validatevalue()和/或validateattribute()方法提供执行数据验证的实际逻辑。子类也可以覆盖clientvalidateattribute()提供客户端验证支持。
验证器是一套 [[builtInValidators|built-in validators] 可以参考使用短名称。它们被列为如下：

boolean: yii\validators\BooleanValidator
captcha: yii\captcha\CaptchaValidator
compare: yii\validators\CompareValidator
date: yii\validators\DateValidator
default: yii\validators\DefaultValueValidator
double: yii\validators\NumberValidator
each: yii\validators\EachValidator
email: yii\validators\EmailValidator
exist: yii\validators\ExistValidator
file: yii\validators\FileValidator
filter: yii\validators\FilterValidator
image: yii\validators\ImageValidator
in: yii\validators\RangeValidator
integer: yii\validators\NumberValidator
match: yii\validators\RegularExpressionValidator
required: yii\validators\RequiredValidator
safe: yii\validators\SafeValidator
string: yii\validators\StringValidator
trim: yii\validators\FilterValidator
unique: yii\validators\UniqueValidator
url: yii\validators\UrlValidator
ip: yii\validators\IpValidator