ms_allowed_http_request_hosts( bool $is_external, string $host )

Whitelists any domain in a multisite installation for safe HTTP requests.

Description

Attached to the ‘http_request_host_is_external’ filter.

Parameters

$is_external

(Required)

$host

(Required)

Return

(bool)

Source

File: wp-includes/http.php 

function ms_allowed_http_request_hosts( $is_external, $host ) {
	global $wpdb;
	static $queried = array();
	if ( $is_external )
		return $is_external;
	if ( $host === get_network()->domain )
		return true;
	if ( isset( $queried[ $host ] ) )
		return $queried[ $host ];
	$queried[ $host ] = (bool) $wpdb->get_var( $wpdb->prepare( "SELECT domain FROM $wpdb->blogs WHERE domain = %s LIMIT 1", $host ) );
	return $queried[ $host ];
}

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Related

Uses

Uses
Uses Description
wp-includes/ms-blogs.php: get_network()

Retrieves network data given a network ID or network object.
wp-includes/wp-db.php: wpdb::get_var()

Retrieve one variable from the database.
wp-includes/wp-db.php: wpdb::prepare()

Prepares a SQL query for safe execution. Uses sprintf()-like syntax.

Changelog

Changelog
Version Description
WP-3.6.0 Introduced.