twentytwelve_widgets_init()
- Since
- Twenty Twelve 1.0
- Source
wp-content/themes/twentytwelve/functions.php:363
Description
Registers our main widget area and the front page widget areas.
Compatibility
- WordPress
- since Twenty Twelve 1.0
- 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 twentytwelve_widgets_init() 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
- 55
- Plugin surface
- None
- Called by
- 0
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 55.
Nothing here hands control to plugin code.
Nothing in core calls this; the cost is only what you spend yourself.
What it touches
- hookthird-party callbacks
apply_filters()one call below twentytwelve_widgets_init()
Further down the call graph this can also reach query, 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 · 1 distinct outcome
One number would be a lie: the work depends on which branch runs. These are every distinct cost twentytwelve_widgets_init() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 55 | __(), __(), name(), __(), __(), name(), __(), __(), name() |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 55 instructions, 55 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 · 2
- register_sidebar()Builds the definition for a single sidebar and returns the ID.
- __()Retrieves the translation of $text.
Source code
function twentytwelve_widgets_init() { register_sidebar( array( 'name' => __( 'Main Sidebar', 'twentytwelve' ), 'id' => 'sidebar-1', 'description' => __( 'Appears on posts and pages except the optional Front Page template, which has its own widgets', 'twentytwelve' ), 'before_widget' => '<aside id="%1$s" class="widget %2$s">', 'after_widget' => '</aside>', 'before_title' => '<h3 class="widget-title">', 'after_title' => '</h3>', ) ); register_sidebar( array( 'name' => __( 'First Front Page Widget Area', 'twentytwelve' ), 'id' => 'sidebar-2', 'description' => __( 'Appears when using the optional Front Page template with a page set as Static Front Page', 'twentytwelve' ), 'before_widget' => '<aside id="%1$s" class="widget %2$s">', 'after_widget' => '</aside>', 'before_title' => '<h3 class="widget-title">', 'after_title' => '</h3>', ) ); register_sidebar( array( 'name' => __( 'Second Front Page Widget Area', 'twentytwelve' ), 'id' => 'sidebar-3', 'description' => __( 'Appears when using the optional Front Page template with a page set as Static Front Page', 'twentytwelve' ), 'before_widget' => '<aside id="%1$s" class="widget %2$s">', 'after_widget' => '</aside>', 'before_title' => '<h3 class="widget-title">', 'after_title' => '</h3>', ) );}Changelog
Introduced in Twenty Twelve 1.0. 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 7.1.0 tag, from
src/wp-content/themes/twentytwelve/functions.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.