WP_Customize_Manager::handle_dismiss_autosave_or_lock_request()

Compatibility

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_Customize_Manager::handle_dismiss_autosave_or_lock_request() 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

28–113

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 135.

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

• hookthird-party callbacksdo_action()one call below WP_Customize_Manager::handle_dismiss_autosave_or_lock_request()
• querycontent queryget_post()one call below WP_Customize_Manager::handle_dismiss_autosave_or_lock_request()

Further down the call graph this can also reach option, serialize, cache 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 · 688 distinct outcomes

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

Uses · 14

• is_user_logged_in()Determines whether the current visitor is a logged in user.
• wp_send_json_error()Sends a JSON response back to an Ajax request, indicating failure.
• 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.
• get_post_type_object()Retrieves a post type object by name.
• delete_post_meta()Deletes a post meta field for the given post ID.
• wp_send_json_success()Sends a JSON response back to an Ajax request, indicating success.
• get_post_status()Retrieves the post status based on the post ID.
• wp_get_post_autosave()Retrieves the autosaved data of the specified post.
• get_current_user_id()Gets the current user's ID.
• wp_delete_post()Trashes or deletes a post or page.
• WP_Customize_Manager::is_preview()Determines whether it is a theme preview or not.

Source code

View on Trac ↗View on GitHub ↗

3702	public function handle_dismiss_autosave_or_lock_request() {3703		// Calls to dismiss_user_auto_draft_changesets() and wp_get_post_autosave() require non-zero get_current_user_id().3704		if ( ! is_user_logged_in() ) {3705			wp_send_json_error( 'unauthenticated', 401 );3706		}3707 3708		if ( ! $this->is_preview() ) {3709			wp_send_json_error( 'not_preview', 400 );3710		}3711 3712		if ( ! check_ajax_referer( 'customize_dismiss_autosave_or_lock', 'nonce', false ) ) {3713			wp_send_json_error( 'invalid_nonce', 403 );3714		}3715 3716		$changeset_post_id = $this->changeset_post_id();3717		$dismiss_lock      = ! empty( $_POST['dismiss_lock'] );3718		$dismiss_autosave  = ! empty( $_POST['dismiss_autosave'] );3719 3720		if ( $dismiss_lock ) {3721			if ( empty( $changeset_post_id ) && ! $dismiss_autosave ) {3722				wp_send_json_error( 'no_changeset_to_dismiss_lock', 404 );3723			}3724			if ( ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->edit_post, $changeset_post_id ) && ! $dismiss_autosave ) {3725				wp_send_json_error( 'cannot_remove_changeset_lock', 403 );3726			}3727 3728			delete_post_meta( $changeset_post_id, '_edit_lock' );3729 3730			if ( ! $dismiss_autosave ) {3731				wp_send_json_success( 'changeset_lock_dismissed' );3732			}3733		}3734 3735		if ( $dismiss_autosave ) {3736			if ( empty( $changeset_post_id ) || 'auto-draft' === get_post_status( $changeset_post_id ) ) {3737				$dismissed = $this->dismiss_user_auto_draft_changesets();3738				if ( $dismissed > 0 ) {3739					wp_send_json_success( 'auto_draft_dismissed' );3740				} else {3741					wp_send_json_error( 'no_auto_draft_to_delete', 404 );3742				}3743			} else {3744				$revision = wp_get_post_autosave( $changeset_post_id, get_current_user_id() );3745 3746				if ( $revision ) {3747					if ( ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->delete_post, $changeset_post_id ) ) {3748						wp_send_json_error( 'cannot_delete_autosave_revision', 403 );3749					}3750 3751					if ( ! wp_delete_post( $revision->ID, true ) ) {3752						wp_send_json_error( 'autosave_revision_deletion_failure', 500 );3753					} else {3754						wp_send_json_success( 'autosave_revision_deleted' );3755					}3756				} else {3757					wp_send_json_error( 'no_autosave_revision_to_delete', 404 );3758				}3759			}3760		}3761 3762		wp_send_json_error( 'unknown_error', 500 );3763	}

Changelog

Introduced in 4.9.0. One change between 6.7.7 and 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 6.9.7 tag, from src/wp-includes/class-wp-customize-manager.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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