WordPress at Your Fingertips
function is not described

_redirect_to_about_wordpress() WP 3.3.0

Redirect to the About WordPress page after a successful upgrade.

This function is only needed when the existing installation is older than 3.4.0.

This is an internal function for using it by WP core itself. It's not recommended to use this function in your code.

No Hooks.

Return

null. Nothing.

Usage

_redirect_to_about_wordpress( $new_version );
$new_version(string) (required)
-

Notes

  • Global. String. $wp_version The WordPress version string.
  • Global. String. $pagenow
  • Global. String. $action

Changelog

Since 3.3.0 Introduced.

Code of _redirect_to_about_wordpress() WP 5.8.2

<?php
function _redirect_to_about_wordpress( $new_version ) {
	global $wp_version, $pagenow, $action;

	if ( version_compare( $wp_version, '3.4-RC1', '>=' ) ) {
		return;
	}

	// Ensure we only run this on the update-core.php page. The Core_Upgrader may be used in other contexts.
	if ( 'update-core.php' !== $pagenow ) {
		return;
	}

	if ( 'do-core-upgrade' !== $action && 'do-core-reinstall' !== $action ) {
		return;
	}

	// Load the updated default text localization domain for new strings.
	load_default_textdomain();

	// See do_core_upgrade().
	show_message( __( 'WordPress updated successfully.' ) );

	// self_admin_url() won't exist when upgrading from <= 3.0, so relative URLs are intentional.
	show_message(
		'<span class="hide-if-no-js">' . sprintf(
			/* translators: 1: WordPress version, 2: URL to About screen. */
			__( 'Welcome to WordPress %1$s. You will be redirected to the About WordPress screen. If not, click <a href="%2$s">here</a>.' ),
			$new_version,
			'about.php?updated'
		) . '</span>'
	);
	show_message(
		'<span class="hide-if-js">' . sprintf(
			/* translators: 1: WordPress version, 2: URL to About screen. */
			__( 'Welcome to WordPress %1$s. <a href="%2$s">Learn more</a>.' ),
			$new_version,
			'about.php?updated'
		) . '</span>'
	);
	echo '</div>';
	?>
<script type="text/javascript">
window.location = 'about.php?updated';
</script>
	<?php

	// Include admin-footer.php and exit.
	require_once ABSPATH . 'wp-admin/admin-footer.php';
	exit;
}