_redirect_to_about_wordpress( string $new_version )
- Since
- 3.3.0
- Source
wp-admin/includes/update-core.php:1998
Description
This function is only needed when the existing installation is older than 3.4.0.
Compatibility
- WordPress
- since 3.3.0
- PHP
- 7.4–8.6-dev
- 6.7.7
- 6.8.8
- 6.9.7
- 7.0.4
- 7.1.0
Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.
Parameters
$new_versionstring
Performance profile
How much work a call to _redirect_to_about_wordpress() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.
- Cost class
- Trivial
- Scaling
- Constant
- Instructions
- 11–57
- Plugin surface
- None
- Called by
- 0
Touches nothing outside its own arguments.
No loop in the body: the same number of instructions runs whatever you pass in.
Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 60.
Nothing here hands control to plugin code.
Nothing in core calls this; the cost is only what you spend yourself.
What one call costs · 2 distinct outcomes
One number would be a lie: the work depends on which branch runs. These are every distinct cost _redirect_to_about_wordpress() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 11–17 | version_compare() |
!version_compare() && $pagenow === "update-core.php" | 55–57 | version_compare(), load_default_textdomain(), __(), show_message(), __(), sprintf(), show_message(), __(), sprintf(), show_message(), exit() |
Across PHP versions
| PHP | Compiled | Executed | Branches | Notes |
|---|---|---|---|---|
| 8.6-dev | 60 | 11–57 | 4 | |
| 8.5 | 60 | 11–57 | 4 | |
| 8.4 | 60 | 11–57 | 4 | 2 more instructions than PHP 8.3 |
| 8.3 | 58 | 11–55 | 4 | |
| 8.2 | 58 | 11–55 | 4 | |
| 8.1 | 58 | 11–55 | 4 | |
| 7.4 | 58 | 11–55 | 4 |
An instruction is not a fixed amount of time, so a matching count is not necessarily the same speed; what it rules out is a difference in the work itself.
Uses · 3
- load_default_textdomain()Loads default translated strings based on locale.
- show_message()Displays the given administration message.
- __()Retrieves the translation of $text.
Source code
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>window.location = 'about.php?updated';</script> <?php // Include admin-footer.php and exit. require_once ABSPATH . 'wp-admin/admin-footer.php'; exit;}Changelog
Introduced in 3.3.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
About this page
- Parsed data
- Generated from the wordpress-develop 7.1.0 tag, from
src/wp-admin/includes/update-core.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it. - Corrections
- Something wrong on this page? Report it and it gets fixed in the next regeneration.