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функция не описана

Requests_Transport_fsockopen::test() public WP 1.0

Whether this transport is valid

It's a method of the class: Requests_Transport_fsockopen{}

Хуков нет.

Возвращает

true/false. True if the transport is valid, false otherwise.

Использование

$result = Requests_Transport_fsockopen::test( $capabilities );

Код Requests_Transport_fsockopen::test() WP 5.5.1

<?php
public static function test($capabilities = array()) {
	if (!function_exists('fsockopen')) {
		return false;
	}

	// If needed, check that streams support SSL
	if (isset($capabilities['ssl']) && $capabilities['ssl']) {
		if (!extension_loaded('openssl') || !function_exists('openssl_x509_parse')) {
			return false;
		}

		// Currently broken, thanks to https://github.com/facebook/hhvm/issues/2156
		if (defined('HHVM_VERSION')) {
			return false;
		}
	}

	return true;
}