wp_get_post_revisions( int|WP_Post $post = 0, array|null $args = null ): WP_Post[]|int[]
- Since
- 2.6.0
- Source
wp-includes/revision.php:652
Compatibility
- WordPress
- since 2.6.0
- 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
$postint|WP_Postoptional- Post ID or WP_Post object. Default is global
$post.Default:0 $argsarray|nulloptional- Arguments for retrieving post revisions. Default null.Default:
null
Return value
WP_Post[]|int[]- Array of revision objects or IDs, or an empty array if none.
Performance profile
How much work a call to wp_get_post_revisions() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.
- Cost class
- Heavy
- Scaling
- Constant
- Instructions
- 8–36
- Plugin surface
- None
- Called by
- 8
Reaches the database via get_post().
No loop in the body: the same number of instructions runs whatever you pass in.
Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 39.
Nothing here hands control to plugin code.
8 places in core call this, so the cost is paid more often than your own code shows.
What it touches
- querycontent query
get_post()called directly
Further down the call graph this can also reach hook, cache, option, serialize and transient. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.
What one call costs · 4 distinct outcomes
One number would be a lie: the work depends on which branch runs. These are every distinct cost wp_get_post_revisions() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 8–10 | get_post() |
!empty($post) && $args && !wp_revisions_enabled() | 22 | get_post(), wp_parse_args(), wp_revisions_enabled() |
!empty($post) && !$args | 32 | get_post(), wp_parse_args(), post_parent(), get_children() |
!empty($post) && $args && wp_revisions_enabled() | 36 | get_post(), wp_parse_args(), wp_revisions_enabled(), post_parent(), get_children() |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 39 instructions, 8–36 executed per call, 5 branches. The work does not change between versions.
An instruction is not a fixed amount of time, so a matching count is not necessarily the same speed; what it rules out is a difference in the work itself.
Uses · 4
- get_post()Retrieves post data given a post ID or post object.
- wp_parse_args()Merges user defined arguments into defaults array.
- wp_revisions_enabled()Determines whether revisions are enabled for a given post.
- get_children()Retrieves all children of the post parent ID.
Used by · 8
- WP_Customize_Manager::_publish_changeset_values()Publishes the values of a changeset.
- WP_REST_Autosaves_Controller::get_items()Gets a collection of autosaves using wp_get_post_autosave.
- edit_post()Updates an existing post with values provided in `$_POST`.
- wp_ajax_get_revision_diffs()Handles getting revision diffs via AJAX.
- wp_list_post_revisions()Displays a list of a post's revisions.
- wp_prepare_revisions_for_js()Prepare revisions for JavaScript.
- wp_save_post_revision()Creates a revision for the current version of a post.
- wp_xmlrpc_server::wp_getRevisions()Retrieves revisions for a specific post.
Source code
function wp_get_post_revisions( $post = 0, $args = null ) { $post = get_post( $post ); if ( ! $post || empty( $post->ID ) ) { return array(); } $defaults = array( 'order' => 'DESC', 'orderby' => 'date ID', 'check_enabled' => true, ); $args = wp_parse_args( $args, $defaults ); if ( $args['check_enabled'] && ! wp_revisions_enabled( $post ) ) { return array(); } $args = array_merge( $args, array( 'post_parent' => $post->ID, 'post_type' => 'revision', 'post_status' => 'inherit', ) ); $revisions = get_children( $args ); if ( ! $revisions ) { return array(); } return $revisions;}Changelog
Introduced in 2.6.0. 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-includes/revision.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.