Question

get_site_url( int $blog_id = null,  string $path = '',  string $scheme = null )

Retrieves the URL for a given site where WordPress application files (e.g. wp-blog-header.php or the wp-admin/ folder) are accessible.

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description

Returns the ‘site_url’ option with the appropriate protocol, ‘https’ if is_ssl() and ‘http’ otherwise. If $scheme is ‘http’ or ‘https’, is_ssl() is overridden.

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参数

$blog_id

(int) (Optional) Site ID. Default null (current site).

Default value: null

$path

(string) (Optional) Path relative to the site URL.

Default value: ''

$scheme

(string) (Optional) Scheme to give the site URL context. Accepts 'http', 'https', 'login', 'login_post', 'admin', or 'relative'.

Default value: null

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返回值

(string) Site URL link with optional path appended.

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源代码

File: wp-includes/link-template.php

function get_site_url( $blog_id = null, $path = '', $scheme = null ) {
	if ( empty( $blog_id ) || !is_multisite() ) {
		$url = get_option( 'siteurl' );
	} else {
		switch_to_blog( $blog_id );
		$url = get_option( 'siteurl' );
		restore_current_blog();
	}

	$url = set_url_scheme( $url, $scheme );

	if ( $path && is_string( $path ) )
		$url .= '/' . ltrim( $path, '/' );

	/**
	 * Filters the site URL.
	 *
	 * @since 2.7.0
	 *
	 * @param string      $url     The complete site URL including scheme and path.
	 * @param string      $path    Path relative to the site URL. Blank string if no path is specified.
	 * @param string|null $scheme  Scheme to give the site URL context. Accepts 'http', 'https', 'login',
	 *                             'login_post', 'admin', 'relative' or null.
	 * @param int|null    $blog_id Site ID, or null for the current site.
	 */
	return apply_filters( 'site_url', $url, $path, $scheme, $blog_id );
}

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更新日志

Version	description
3.0.0	Introduced.

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相关函数

Uses

• wp-includes/load.php: is_multisite()
• wp-includes/link-template.php: set_url_scheme()
• wp-includes/link-template.php: site_url
• wp-includes/plugin.php: apply_filters()
• wp-includes/option.php: get_option()
• wp-includes/ms-blogs.php: switch_to_blog()
• wp-includes/ms-blogs.php: restore_current_blog()
Show 2 more uses Hide more uses

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Used By

• wp-includes/link-template.php: get_admin_url()
• wp-includes/link-template.php: site_url()

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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: 7You must log in to vote on the helpfulness of this note Contributed by Codex

   
   <?php echo get_site_url(); ?>
   

   Results in the full site URL being displayed:

   http://www.example.com

$url = get_site_url('/wp-content/themes/', 'https');

When you need to pass the scheme as well.

The value is without a trailing slash, e.g., https://www.example.com, not https://www.example.com/.