WP_Screen::render_screen_layout()
- Since
- 3.3.0
- Source
wp-admin/includes/class-wp-screen.php:1201
Compatibility
- WordPress
- since 3.3.0
- 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.
Performance profile
How much work a call to WP_Screen::render_screen_layout() 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
- Light
- Scaling
- Scales with input
- Instructions
- 5–23
- Plugin surface
- None
- Called by
- 1
Touches nothing outside its own arguments.
The body loops, so the work grows with how much data it finds.
Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 51.
Nothing here hands control to plugin code.
1 place in core call this, so the cost is paid more often than your own code shows.
What it touches
- hookthird-party callbacks
apply_filters()one call below WP_Screen::render_screen_layout()
Further down the call graph this can also reach option, cache, serialize, query 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 · 2 distinct outcomes
One number would be a lie: the work depends on which branch runs. These are every distinct cost WP_Screen::render_screen_layout() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
!->get_option() | 5 | ->get_option() |
->get_option() && !$i | 23 | ->get_option(), ->get_columns(), ->get_option(), _e() |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 51 instructions, 5–23 executed per call, 2 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 · 7
- _e()Displays translated text.
- esc_attr()Escaping for HTML attributes.
- checked()Outputs the HTML checked attribute.
- _n()Translates and retrieves the singular or plural form based on the supplied number.
- number_format_i18n()Converts float number to format based on the locale.
- WP_Screen::get_option()Gets the arguments for an option for the screen.
- WP_Screen::get_columns()Gets the number of layout columns the user has selected.
Used by · 1
- WP_Screen::render_screen_options()Renders the screen options tab.
Source code
public function render_screen_layout() { if ( ! $this->get_option( 'layout_columns' ) ) { return; } $screen_layout_columns = $this->get_columns(); $num = $this->get_option( 'layout_columns', 'max' ); ?> <fieldset class='columns-prefs'> <legend class="screen-layout"><?php _e( 'Layout' ); ?></legend> <?php for ( $i = 1; $i <= $num; ++$i ) : ?> <label class="columns-prefs-<?php echo $i; ?>"> <input type='radio' name='screen_columns' value='<?php echo esc_attr( $i ); ?>' <?php checked( $screen_layout_columns, $i ); ?> /> <?php printf( /* translators: %s: Number of columns on the page. */ _n( '%s column', '%s columns', $i ), number_format_i18n( $i ) ); ?> </label> <?php endfor; ?> </fieldset> <?php }Changelog
Introduced in 3.3.0. 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-admin/includes/class-wp-screen.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.