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_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. |