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has_custom_logo()

has_custom_logo( int $blog_id ): bool

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Determines whether the site has a custom logo.

Parameters

$blog_idintoptional
ID of the blog in question. Default is the ID of the current blog.

Return

bool Whether the site has a custom logo or not.

Source

function has_custom_logo( $blog_id = 0 ) {	$switched_blog = false;	if ( is_multisite() && ! empty( $blog_id ) && get_current_blog_id() !== (int) $blog_id ) {	switch_to_blog( $blog_id );	$switched_blog = true;	}	$custom_logo_id = get_theme_mod( 'custom_logo' );	$is_image = ( $custom_logo_id ) ? wp_attachment_is_image( $custom_logo_id ) : false;	if ( $switched_blog ) {	restore_current_blog();	}	return $is_image; }

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UsesDescription
get_theme_mod()wp-includes/theme.php

Retrieves theme modification value for the active theme.

wp_attachment_is_image()wp-includes/post.php

Determines whether an attachment is an image.

switch_to_blog()wp-includes/ms-blogs.php

Switches the current blog.

restore_current_blog()wp-includes/ms-blogs.php

Restores the current blog, after calling switch_to_blog() .

is_multisite()wp-includes/load.php

Determines whether Multisite is enabled.

get_current_blog_id()wp-includes/load.php

Retrieves the current site ID.

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Used byDescription
get_custom_logo()wp-includes/general-template.php

Returns a custom logo, linked to home unless the theme supports removing the link on the home page.

get_body_class()wp-includes/post-template.php

Retrieves an array of the class names for the body element.

Changelog

VersionDescription
4.5.0Introduced.

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