FILTER_VALIDATE_BOOLEAN,
FILTER_VALIDATE_BOOL
|
"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.
String values are trimmed using trim before comparison.
|
FILTER_VALIDATE_DOMAIN |
"validate_domain" |
default
|
FILTER_FLAG_HOSTNAME,
FILTER_NULL_ON_FAILURE
|
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
alphanumeric character and contain only alphanumerics or
hyphens).
|
FILTER_VALIDATE_EMAIL |
"validate_email" |
default
|
FILTER_FLAG_EMAIL_UNICODE,
FILTER_NULL_ON_FAILURE
|
Validates whether the value is a valid e-mail address.
In general, this validates e-mail addresses against the addr-specsyntax in
» RFC 822, with the exceptions that comments and whitespace folding
and dotless domain names
are not supported.
|
FILTER_VALIDATE_FLOAT |
"float" |
default,
decimal,
min_range,
max_range
|
FILTER_FLAG_ALLOW_THOUSAND,
FILTER_NULL_ON_FAILURE
|
Validates value as float, optionally from the specified range, and converts to float on success.
String values are trimmed using trim before comparison.
|
FILTER_VALIDATE_INT |
"int" |
default,
min_range,
max_range
|
FILTER_FLAG_ALLOW_OCTAL,
FILTER_FLAG_ALLOW_HEX,
FILTER_NULL_ON_FAILURE
|
Validates value as integer, optionally from the specified range, and converts to int on success.
String values are trimmed using trim before comparison.
|
FILTER_VALIDATE_IP |
"validate_ip" |
default
|
FILTER_FLAG_IPV4,
FILTER_FLAG_IPV6,
FILTER_FLAG_NO_PRIV_RANGE,
FILTER_FLAG_NO_RES_RANGE,
FILTER_FLAG_GLOBAL_RANGE,
FILTER_NULL_ON_FAILURE
|
Validates value as IP address, optionally only IPv4 or IPv6 or not
from private or reserved ranges.
|
FILTER_VALIDATE_MAC |
"validate_mac_address" |
default
|
FILTER_NULL_ON_FAILURE
|
Validates value as MAC address. |
FILTER_VALIDATE_REGEXP |
"validate_regexp" |
default,
regexp
|
FILTER_NULL_ON_FAILURE
|
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,
FILTER_NULL_ON_FAILURE
|
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. |