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filter_SSL( string $url )

Formats a URL to use https.

Description

Useful as a filter.

Parameters

$url

(string) (Required) URL

Return

(string) URL with https as the scheme

Source

File: wp-includes/ms-functions.php 

function filter_SSL( $url ) {  // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid
	if ( ! is_string( $url ) ) {
		return get_bloginfo( 'url' ); // Return home blog URL with proper scheme.
	}

	if ( force_ssl_content() && is_ssl() ) {
		$url = set_url_scheme( $url, 'https' );
	}

	return $url;
}

Uses

Uses Description
wp-includes/general-template.php: get_bloginfo()

Retrieves information about the current site.
wp-includes/load.php: is_ssl()

Determines if SSL is used.
wp-includes/link-template.php: set_url_scheme()

Sets the scheme for a URL.
wp-includes/ms-functions.php: force_ssl_content()

Whether to force SSL on content.

Changelog

Version Description
2.8.5 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/filter_ssl