原型

core_update_footer( string $msg = '' )

参数

$msg (string) (Optional)

返回值

(string)  

源文件

路径:wp-admin/includes/update.php

<?php
...
function core_update_footer( $msg = '' ) {
	if ( !current_user_can('update_core') )
		return sprintf( __( 'Version %s' ), get_bloginfo( 'version', 'display' ) );
	$cur = get_preferred_from_update_core();
	if ( ! is_object( $cur ) )
		$cur = new stdClass;
	if ( ! isset( $cur->current ) )
		$cur->current = '';
	if ( ! isset( $cur->url ) )
		$cur->url = '';
	if ( ! isset( $cur->response ) )
		$cur->response = '';
	switch ( $cur->response ) {
	case 'development' :
		/* translators: 1: WordPress version number, 2: WordPress updates admin screen URL */
		return sprintf( __( 'You are using a development version (%1$s). Cool! Please <a href="%2$s">stay updated</a>.' ), get_bloginfo( 'version', 'display' ), network_admin_url( 'update-core.php' ) );
	case 'upgrade' :
		return '<strong><a href="' . network_admin_url( 'update-core.php' ) . '">' . sprintf( __( 'Get Version %s' ), $cur->current ) . '</a></strong>';
	case 'latest' :
	default :
		return sprintf( __( 'Version %s' ), get_bloginfo( 'version', 'display' ) );
	}
}
...
?>

其他

英文文档:https://developer.wordpress.org/reference/functions/core_update_footer/