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 ↗

3703	public function handle_dismiss_autosave_or_lock_request() {3704		// Calls to dismiss_user_auto_draft_changesets() and wp_get_post_autosave() require non-zero get_current_user_id().3705		if ( ! is_user_logged_in() ) {3706			wp_send_json_error( 'unauthenticated', 401 );3707		}3708 3709		if ( ! $this->is_preview() ) {3710			wp_send_json_error( 'not_preview', 400 );3711		}3712 3713		if ( ! check_ajax_referer( 'customize_dismiss_autosave_or_lock', 'nonce', false ) ) {3714			wp_send_json_error( 'invalid_nonce', 403 );3715		}3716 3717		$changeset_post_id = $this->changeset_post_id();3718		$dismiss_lock      = ! empty( $_POST['dismiss_lock'] );3719		$dismiss_autosave  = ! empty( $_POST['dismiss_autosave'] );3720 3721		if ( $dismiss_lock ) {3722			if ( empty( $changeset_post_id ) && ! $dismiss_autosave ) {3723				wp_send_json_error( 'no_changeset_to_dismiss_lock', 404 );3724			}3725			if ( ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->edit_post, $changeset_post_id ) && ! $dismiss_autosave ) {3726				wp_send_json_error( 'cannot_remove_changeset_lock', 403 );3727			}3728 3729			delete_post_meta( $changeset_post_id, '_edit_lock' );3730 3731			if ( ! $dismiss_autosave ) {3732				wp_send_json_success( 'changeset_lock_dismissed' );3733			}3734		}3735 3736		if ( $dismiss_autosave ) {3737			if ( empty( $changeset_post_id ) || 'auto-draft' === get_post_status( $changeset_post_id ) ) {3738				$dismissed = $this->dismiss_user_auto_draft_changesets();3739				if ( $dismissed > 0 ) {3740					wp_send_json_success( 'auto_draft_dismissed' );3741				} else {3742					wp_send_json_error( 'no_auto_draft_to_delete', 404 );3743				}3744			} else {3745				$revision = wp_get_post_autosave( $changeset_post_id, get_current_user_id() );3746 3747				if ( $revision ) {3748					if ( ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->delete_post, $changeset_post_id ) ) {3749						wp_send_json_error( 'cannot_delete_autosave_revision', 403 );3750					}3751 3752					if ( ! wp_delete_post( $revision->ID, true ) ) {3753						wp_send_json_error( 'autosave_revision_deletion_failure', 500 );3754					} else {3755						wp_send_json_success( 'autosave_revision_deleted' );3756					}3757				} else {3758					wp_send_json_error( 'no_autosave_revision_to_delete', 404 );3759				}3760			}3761		}3762 3763		wp_send_json_error( 'unknown_error', 500 );3764	}

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 6.7.7 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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