WP_Http::is_ip_address( string $maybe_ip ): int|false
Determines if a specified string represents an IP address or not.
Description
This function also detects the type of the IP address, returning either ‘4’ or ‘6’ to represent an IPv4 and IPv6 address respectively.
This does not verify if the IP is a valid IP, only that it appears to be an IP address.
Parameters
-
$maybe_ipstring Required -
A suspected IP address.
Return
int|false Upon success, '4' or '6' to represent an IPv4 or IPv6 address, false upon failure.
Source
File: wp-includes/class-wp-http.php.
View all references
public static function is_ip_address( $maybe_ip ) {
if ( preg_match( '/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/', $maybe_ip ) ) {
return 4;
}
if ( str_contains( $maybe_ip, ':' ) && preg_match( '/^(((?=.*(::))(?!.*\3.+\3))\3?|([\dA-F]{1,4}(\3|:\b|$)|\2))(?4){5}((?4){2}|(((2[0-4]|1\d|[1-9])?\d|25[0-5])\.?\b){4})$/i', trim( $maybe_ip, ' []' ) ) ) {
return 6;
}
return false;
}
Changelog
| Version | Description |
|---|---|
| 3.7.0 | Introduced. |