FormatRules.php

Alpha

Alpha with spaces.

Alphanumeric with underscores and dashes

Alphanumeric, spaces, and a limited set of punctuation characters. Accepted punctuation characters are: ~ tilde, ! exclamation, # number, $ dollar, % percent, & ampersand, * asterisk, - dash, _ underscore, + plus, = equals, | vertical bar, : colon, . period ~ ! # $ % & * - _ + = | : .

Alphanumeric

Alphanumeric w/ spaces

Any type of string

Decimal number

String of hexidecimal characters

Integer

Is a Natural number (0,1,2,3, etc.)

Is a Natural number, but not a zero (1,2,3, etc.)

Numeric

Compares value against a regular expression pattern.

Validates that the string is a valid timezone as per the timezone_identifiers_list function.

Valid Base64 Tests a string for characters outside of the Base64 alphabet as defined by RFC 2045 http://www.faqs.org/rfcs/rfc2045

Valid JSON

Checks for a correctly formatted email address

Validate a comma-separated list of email addresses. Example:

Validate an IP address (human readable format or binary string - inet_pton)

Checks a string to ensure it is (loosely) a URL. Warning: this rule will pass basic strings like "banana"; use valid_url_strict for a stricter rule.

Checks a URL to ensure it's formed correctly.

Checks for a valid date and matches a given date format