selected( mixed $selected, mixed $current = true, bool $display = true ): string
- Since
- 1.0.0
- Source
wp-includes/general-template.php:5246
Description
Compares the first two arguments and if identical marks as selected.
Compatibility
- WordPress
- since 1.0.0
- 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
$selectedmixed- One of the values to compare.
$currentmixedoptional- The other value to compare if not just true.
Default true.Default:true $displaybooloptional- Whether to echo or just return the string.
Default true.Default:true
Return value
string- HTML attribute or empty string.
Performance profile
How much work a call to selected() 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
- 10
- Plugin surface
- None
- Called by
- 26
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. The body compiles to 10.
Nothing here hands control to plugin code.
26 places in core call this, so the cost is paid more often than your own code shows.
What one call costs · 1 distinct outcome
One number would be a lie: the work depends on which branch runs. These are every distinct cost selected() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 10 | __checked_selected_helper() |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 10 instructions, 10 executed per call, 0 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 · 1
- __checked_selected_helper()Private helper function for checked, selected, disabled and readonly.
Used by · 26
- Custom_Background::admin_page()Displays the custom background page.
- Twenty_Fourteen_Ephemera_Widget::form()Display the form for this widget on the Widgets page of the Admin area.
- WP_Comments_List_Table::comment_type_dropdown()Displays a comment type drop-down for filtering on the Comments list table.
- WP_Customize_Control::render_content()Renders the control's content.
- WP_Customize_Nav_Menu_Location_Control::render_content()Render content just like a normal select control.
- WP_List_Table::months_dropdown()Displays a dropdown for filtering items in the list table by month.
- WP_Media_List_Table::get_views()
- WP_Nav_Menu_Widget::form()Outputs the settings form for the Navigation Menu widget.
- WP_Posts_List_Table::formats_dropdown()Displays a formats drop-down for filtering items.
- WP_Widget_Links::form()Outputs the settings form for the Links widget.
- WP_Widget_Pages::form()Outputs the settings form for the Pages widget.
- WP_Widget_Tag_Cloud::form()Outputs the Tag Cloud widget settings form.
Show all 26
- choose_primary_blog()Handles the display of choosing a user's primary site.
- install_search_form()Displays a search form for searching plugins.
- install_theme_search_form()Displays search form for searching themes.
- media_upload_library_form()Outputs the legacy media upload form for the media library.
- mu_dropdown_languages()Generates and displays a drop-down of available languages.
- page_template_dropdown()Prints out option HTML elements for the page templates drop-down.
- parent_dropdown()Prints out option HTML elements for the page parents drop-down.
- post_submit_meta_box()Displays post submit form fields.
- touch_time()Prints out HTML form date elements for editing post or comment publish date.
- wp_dropdown_categories()Displays or retrieves the HTML dropdown list of categories.
- wp_dropdown_languages()Displays or returns a Language selector.
- wp_dropdown_users()Creates dropdown HTML content of users.
- wp_print_media_templates()Prints the templates used in the media manager.
- wp_widget_rss_form()Displays RSS widget options form.
Source code
function selected( $selected, $current = true, $display = true ) { return __checked_selected_helper( $selected, $current, $display, 'selected' );}Changelog
Introduced in 1.0.0. 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 6.8.8 tag, from
src/wp-includes/general-template.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.