\CodeIgniter\ValidationFormatRules

alpha()

alpha(string  $str = null) : boolean

Alpha

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alpha_space()

alpha_space(string  $value = null) : boolean

Alpha with spaces.

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True if alpha with spaces, else false.

alpha_dash()

alpha_dash(string  $str = null) : boolean

Alpha-numeric with underscores and dashes

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alpha_numeric()

alpha_numeric(string  $str = null) : boolean

Alpha-numeric

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alpha_numeric_space()

alpha_numeric_space(string  $str = null) : boolean

Alpha-numeric w/ spaces

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string()

string(string|null  $str = null) : boolean

Any type of string

Note: we specifically do NOT type hint $str here so that it doesn't convert numbers into strings.

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decimal()

decimal(string  $str = null) : boolean

Decimal number

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integer()

integer(string  $str = null) : boolean

Integer

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is_natural()

is_natural(string  $str = null) : boolean

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

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is_natural_no_zero()

is_natural_no_zero(string  $str = null) : boolean

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

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numeric()

numeric(string  $str = null) : boolean

Numeric

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regex_match()

regex_match(string  $str = null, string  $pattern, array  $data) : boolean

Compares value against a regular expression pattern.

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timezone()

timezone(string  $str = null) : boolean

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

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valid_base64()

valid_base64(string  $str = null) : boolean

Valid Base64

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

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valid_json()

valid_json(string  $str = null) : boolean

Valid JSON

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valid_email()

valid_email(string  $str = null) : boolean

Checks for a correctly formatted email address

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valid_emails()

valid_emails(string  $str = null) : boolean

Validate a comma-separated list of email addresses.

Example: valid_emails[one@example.com,two@example.com]

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valid_ip()

valid_ip(string  $ip = null, string  $which = null, array  $data) : boolean

Validate an IP address

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valid_url()

valid_url(string  $str = null) : boolean

Checks a URL to ensure it's formed correctly.

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valid_date()

valid_date(string  $str = null, string  $format = null) : boolean

Checks for a valid date and matches a given date format

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