filter-php-filters-php-validate-0

  • Types of filters

    • Validate filters

  • Validate filters

    • Validate filters

    Validate filters

    Listing of filters for
    validation
    ID Name Options Flags Description
    FILTER_VALIDATE_BOOLEAN “boolean” default FILTER_NULL_ON_FAILURE

    Returns TRUE for “1”,
    “true”, “on” and “yes”. Returns FALSE
    otherwise.

    If
    FILTER_NULL_ON_FAILURE is set,
    FALSE is returned only for “0”,
    “false”, “off”, “no”, and “”, and
    NULL is returned for all non-boolean
    values.
    FILTER_VALIDATE_DOMAIN “validate_domain” default FILTER_FLAG_HOSTNAME

    Validates whether the domain name label lengths are
    valid.

    Validates domain names against RFC 1034, RFC 1035,
    RFC 952, RFC 1123, RFC 2732, RFC 2181, and RFC 1123. Optional flag
    FILTER_FLAG_HOSTNAME adds ability to
    specifically validate hostnames (they must start with an
    alphanumberic character and contain only alphanumerics or
    hyphens).
    FILTER_VALIDATE_EMAIL “validate_email” default FILTER_FLAG_EMAIL_UNICODE

    Validates whether the value is a valid e-mail
    address.

    In general, this validates e-mail addresses against
    the syntax in RFC 822, with the exceptions that comments and
    whitespace folding and dotless domain names are not supported.
    FILTER_VALIDATE_FLOAT “float” default, decimal FILTER_FLAG_ALLOW_THOUSAND Validates value as float, and converts to float on
    success.
    FILTER_VALIDATE_INT “int” default, min_range, max_range FILTER_FLAG_ALLOW_OCTAL,
    FILTER_FLAG_ALLOW_HEX     		Validates value as integer, optionally from the specified
    range, and converts to int on success.
    FILTER_VALIDATE_IP “validate_ip” default FILTER_FLAG_IPV4,
    FILTER_FLAG_IPV6,
    FILTER_FLAG_NO_PRIV_RANGE,
    FILTER_FLAG_NO_RES_RANGE     		Validates value as IP address, optionally only IPv4 or IPv6 or
    not from private or reserved ranges.
    FILTER_VALIDATE_MAC “validate_mac_address” default   Validates value as MAC address.
    FILTER_VALIDATE_REGEXP “validate_regexp” default, regexp   Validates value against regexp,
    a Perl-compatible regular
    expression.
    FILTER_VALIDATE_URL “validate_url” default FILTER_FLAG_SCHEME_REQUIRED,
    FILTER_FLAG_HOST_REQUIRED,
    FILTER_FLAG_PATH_REQUIRED,
    FILTER_FLAG_QUERY_REQUIRED     		Validates value as URL (according to » http://www.faqs.org/rfcs/rfc2396),
    optionally with required components. Beware a valid URL may not
    specify the HTTP protocol http:// so further validation
    may be required to determine the URL uses an expected protocol,
    e.g. ssh:// or mailto:. Note that the function
    will only find ASCII URLs to be valid; internationalized domain
    names (containing non-ASCII characters) will fail.

    Note:

    As of PHP 5.4.11, the numbers +0 and -0 validate as
    both integers as well as floats (using
    FILTER_VALIDATE_FLOAT and
    FILTER_VALIDATE_INT). Before PHP
    5.4.11 they only validated as floats (using
    FILTER_VALIDATE_FLOAT).

    When default is set
    to option, default‘s value is used
    if value is not validated.

    Changelog

    Version Description
    7.0.0 Added FILTER_FLAG_HOSTNAME
    5.5.0 Added FILTER_VALIDATE_MAC
    5.2.1 FILTER_VALIDATE_URL now
    implicitly uses
    FILTER_FLAG_SCHEME_REQUIRED and
    FILTER_FLAG_HOST_REQUIRED.