Self-test whether the transport can be used.

Description

The available capabilities to test for can be found in \WpOrg\Requests\Capability.

Parameters

bool> $capabilities Optional. Associative array of capabilities to test against, i.e. [<capability> => true].

Return

Source

 * Self-test whether the transport can be used.
 *
 * The available capabilities to test for can be found in \WpOrg\Requests\Capability.
 *
 * @codeCoverageIgnore
 * @param array<string, bool> $capabilities Optional. Associative array of capabilities to test against, i.e. `['<capability>' => true]`.
 * @return bool Whether the transport can be used.
 */
public static function test($capabilities = []) {
	if (!function_exists('fsockopen')) {
		return false;
	}

	// If needed, check that streams support SSL

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