Question

is_ssl()

Determines if SSL is used.

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description

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返回值

(bool) True if SSL, otherwise false.

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源代码

File: wp-includes/load.php

function is_ssl() {
	if ( isset( $_SERVER['HTTPS'] ) ) {
		if ( 'on' == strtolower( $_SERVER['HTTPS'] ) ) {
			return true;
		}

		if ( '1' == $_SERVER['HTTPS'] ) {
			return true;
		}
	} elseif ( isset($_SERVER['SERVER_PORT'] ) && ( '443' == $_SERVER['SERVER_PORT'] ) ) {
		return true;
	}
	return false;
}

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更新日志

Version	description
4.6.0	Moved from functions.php to load.php.
2.6.0	Introduced.

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相关函数

Used By

• wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::get_allowed_urls()
• wp-includes/ms-load.php: ms_load_current_site_and_network()
• wp-includes/rest-api.php: get_rest_url()
• wp-includes/media.php: wp_calculate_image_srcset()
• wp-includes/admin-bar.php: wp_admin_bar_customize_menu()
• wp-includes/link-template.php: get_avatar_data()
• wp-admin/includes/ajax-actions.php: wp_ajax_parse_embed()
• wp-admin/includes/plugin-install.php: install_plugin_information()
• wp-admin/includes/dashboard.php: wp_dashboard_browser_nag()
• wp-includes/pluggable.php: wp_parse_auth_cookie()
• wp-includes/pluggable.php: wp_set_auth_cookie()
• wp-includes/pluggable.php: auth_redirect()
• wp-includes/general-template.php: wp_login_form()
• wp-includes/functions.php: wp_auth_check_html()
• wp-includes/functions.php: wp_guess_url()
• wp-includes/link-template.php: set_url_scheme()
• wp-includes/link-template.php: network_home_url()
• wp-includes/link-template.php: get_home_url()
• wp-includes/class-wp-admin-bar.php: WP_Admin_Bar::__get()
• wp-includes/user.php: wp_signon()
• wp-includes/post.php: wp_get_attachment_url()
• wp-includes/canonical.php: redirect_canonical()
• wp-includes/ms-functions.php: filter_SSL()
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User Contributed Notes

1. Skip to note content You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note Contributed by Codex

   With load balancers

   It won’t work for websites behind some load balancers, especially Network Solutions hosted websites. To bodgy up a fix, save this gist into the plugins folder and enable it. For details, read “WordPress is_ssl() doesn’t work behind some load balancers.”

   Websites behind load balancers or reverse proxies that support HTTP_X_FORWARDED_PROTO can be fixed by adding the following code to the wp-config.php file, above the require_once call:

   
   if (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https')
       $_SERVER['HTTPS'] = 'on';