wppaste
WordPress

wp_get_post_revisions_url( int|WP_Post $post = 0 ): string|null

Since
5.9.0
Source
wp-includes/revision.php:756
Returns the url for viewing and potentially restoring revisions of a given post.

Compatibility

WordPress
since 5.9.0
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

Return value

string|null
The URL for editing revisions on the given post, otherwise null.

Performance profile

How much work a call to wp_get_post_revisions_url() 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

Reaches the database via get_post().

Scaling
Constant

No loop in the body: the same number of instructions runs whatever you pass in.

Instructions
8–33

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 40.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
0

Nothing in core calls this; the cost is only what you spend yourself.

What it touches

  • querycontent queryget_post()called directly
  • hookthird-party callbacksapply_filters()one call below wp_get_post_revisions_url()

Further down the call graph this can also reach option, 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 · 5 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost wp_get_post_revisions_url() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
!($post instanceof)8get_post()
$post instanceof14get_post(), get_edit_post_link()
$post instanceof && !wp_revisions_enabled()15get_post(), wp_revisions_enabled()
$post instanceof && wp_revisions_enabled()25–28get_post(), wp_revisions_enabled(), wp_get_latest_revision_id_and_total_count(), is_wp_error()
$post instanceof && wp_revisions_enabled() && !is_wp_error()33get_post(), wp_revisions_enabled(), wp_get_latest_revision_id_and_total_count(), is_wp_error(), get_edit_post_link()

Across PHP versions

Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 40 instructions, 8–33 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 · 5

Source code

View on Trac View on GitHub 

function wp_get_post_revisions_url( $post = 0 ) {	$post = get_post( $post ); 	if ( ! $post instanceof WP_Post ) {		return null;	} 	// If the post is a revision, return early.	if ( 'revision' === $post->post_type ) {		return get_edit_post_link( $post );	} 	if ( ! wp_revisions_enabled( $post ) ) {		return null;	} 	$revisions = wp_get_latest_revision_id_and_total_count( $post->ID ); 	if ( is_wp_error( $revisions ) || 0 === $revisions['count'] ) {		return null;	} 	return get_edit_post_link( $revisions['latest_id'] );}

Changelog

Introduced in 5.9.0. Unchanged from 6.7.7 through 7.1.0.

  1. 6.7.7
  2. 6.8.8
  3. 6.9.7
  4. 7.0.4
  5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data
Generated from the wordpress-develop 6.7.7 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
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