wp_ajax_health_check_background_updates()
- Since
- 5.2.0
- Source
wp-admin/includes/ajax-actions.php:5389
Compatibility
Deprecated in WordPress 5.6.0. Use WP_REST_Site_Health_Controller::test_background_updates()
- WordPress
- since 5.2.0
- 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.
Performance profile
How much work a call to wp_ajax_health_check_background_updates() 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
- 31–36
- 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 36.
Nothing here hands control to plugin code.
Nothing in core calls this; the cost is only what you spend yourself.
What it touches
- hookthird-party callbacks
do_action()one call below wp_ajax_health_check_background_updates()
Further down the call graph this can also reach option, query, cache, serialize and transient. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.
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 wp_ajax_health_check_background_updates() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
current_user_can() | 31–34 | __(), sprintf(), _doing_it_wrong(), check_ajax_referer(), current_user_can(), ::WP_Site_Health(), ->get_test_background_updates(), wp_send_json_success() |
!current_user_can() | 33–36 | __(), sprintf(), _doing_it_wrong(), check_ajax_referer(), current_user_can(), wp_send_json_error(), ::WP_Site_Health(), ->get_test_background_updates(), wp_send_json_success() |
Across PHP versions
| PHP | Compiled | Executed | Branches | Notes |
|---|---|---|---|---|
| 8.6-dev | 36 | 31–36 | 2 | |
| 8.5 | 36 | 31–36 | 2 | |
| 8.4 | 36 | 31–36 | 2 | 2 fewer instructions than PHP 8.3 |
| 8.3 | 38 | 33–38 | 2 | |
| 8.2 | 38 | 33–38 | 2 | |
| 8.1 | 38 | 33–38 | 2 | |
| 7.4 | 38 | 33–38 | 2 |
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 · 7
- _doing_it_wrong()Marks something as being incorrectly called.
- __()Retrieves the translation of $text.
- check_ajax_referer()Verifies the Ajax request to prevent processing requests external of the blog.
- current_user_can()Returns whether the current user has the specified capability.
- wp_send_json_error()Sends a JSON response back to an Ajax request, indicating failure.
- wp_send_json_success()Sends a JSON response back to an Ajax request, indicating success.
- WP_Site_Health::get_instance()Returns an instance of the WP_Site_Health class, or create one if none exist yet.
Source code
function wp_ajax_health_check_background_updates() { _doing_it_wrong( 'wp_ajax_health_check_background_updates', sprintf( /* translators: 1: The Site Health action that is no longer used by core. 2: The new function that replaces it. */ __( 'The Site Health check for %1$s has been replaced with %2$s.' ), 'wp_ajax_health_check_background_updates', 'WP_REST_Site_Health_Controller::test_background_updates' ), '5.6.0' ); check_ajax_referer( 'health-check-site-status' ); if ( ! current_user_can( 'view_site_health_checks' ) ) { wp_send_json_error(); } if ( ! class_exists( 'WP_Site_Health' ) ) { require_once ABSPATH . 'wp-admin/includes/class-wp-site-health.php'; } $site_health = WP_Site_Health::get_instance(); wp_send_json_success( $site_health->get_test_background_updates() );}Changelog
Introduced in 5.2.0. 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 6.9.7 tag, from
src/wp-admin/includes/ajax-actions.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.