参数校验

在"参数绑定"时，起始已经支持了两项基本的校验（类型和是否必选），如果要支持更复杂的校验规则，可以通过 @v 指定，如：

/**
 * @route GET /books/
 * @param int $offsit {@v min:0}
 * @param int $limit {@v min:1|max:100}
 */
public function getBooks($offsit=0, $limit=10)

1. 语法

@v <rule>[:param0[,param1...]][|<rule2>...]

required - Required field
equals - Field must match another field (email/password confirmation)
different - Field must be different than another field
accepted - Checkbox or Radio must be accepted (yes, on, 1, true)
numeric - Must be numeric
integer - Must be integer number
boolean - Must be boolean
array - Must be array
length - String must be certain length
lengthBetween - String must be between given lengths
lengthMin - String must be greater than given length
lengthMax - String must be less than given length
min - Minimum
max - Maximum
in - Performs in_array check on given array values
notIn - Negation of in rule (not in array of values)
ip - Valid IP address
email - Valid email address
url - Valid URL
urlActive - Valid URL with active DNS record
alpha - Alphabetic characters only
alphaNum - Alphabetic and numeric characters only
slug - URL slug characters (a-z, 0-9, -, _)
regex - Field matches given regex pattern
date - Field is a valid date
dateFormat - Field is a valid date in the given format
dateBefore - Field is a valid date and is before the given date
dateAfter - Field is a valid date and is after the given date
contains - Field is a string and contains the given string
creditCard - Field is a valid credit card number
optional - Value does not need to be included in data array. If it is however, it must pass validation.