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twentyten_widgets_init()

Since
Twenty Ten 1.0
Source
wp-content/themes/twentyten/functions.php:549
Registers widgetized areas, including two sidebars and four widget-ready columns in the footer.

Description

To override twentyten_widgets_init() in a child theme, remove the action hook and add your own function tied to the init hook.

Compatibility

WordPress
since Twenty Ten 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 twentyten_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

Touches nothing outside its own arguments.

Scaling
Constant

No loop in the body: the same number of instructions runs whatever you pass in.

Instructions
109

Executed per call on PHP 8.5. The body compiles to 109.

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 callbacksapply_filters()one call below twentyten_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 twentyten_widgets_init() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
always109__(), __(), name(), __(), __(), name(), __(), __(), name(), __(), __(), 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: 109 instructions, 109 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 twentyten_widgets_init() {	// Area 1, located at the top of the sidebar.	register_sidebar(		array(			'name'          => __( 'Primary Widget Area', 'twentyten' ),			'id'            => 'primary-widget-area',			'description'   => __( 'Add widgets here to appear in your sidebar.', 'twentyten' ),			'before_widget' => '<li id="%1$s" class="widget-container %2$s">',			'after_widget'  => '</li>',			'before_title'  => '<h3 class="widget-title">',			'after_title'   => '</h3>',		)	); 	// Area 2, located below the Primary Widget Area in the sidebar. Empty by default.	register_sidebar(		array(			'name'          => __( 'Secondary Widget Area', 'twentyten' ),			'id'            => 'secondary-widget-area',			'description'   => __( 'An optional secondary widget area, displays below the primary widget area in your sidebar.', 'twentyten' ),			'before_widget' => '<li id="%1$s" class="widget-container %2$s">',			'after_widget'  => '</li>',			'before_title'  => '<h3 class="widget-title">',			'after_title'   => '</h3>',		)	); 	// Area 3, located in the footer. Empty by default.	register_sidebar(		array(			'name'          => __( 'First Footer Widget Area', 'twentyten' ),			'id'            => 'first-footer-widget-area',			'description'   => __( 'An optional widget area for your site footer.', 'twentyten' ),			'before_widget' => '<li id="%1$s" class="widget-container %2$s">',			'after_widget'  => '</li>',			'before_title'  => '<h3 class="widget-title">',			'after_title'   => '</h3>',		)	); 	// Area 4, located in the footer. Empty by default.	register_sidebar(		array(			'name'          => __( 'Second Footer Widget Area', 'twentyten' ),			'id'            => 'second-footer-widget-area',			'description'   => __( 'An optional widget area for your site footer.', 'twentyten' ),			'before_widget' => '<li id="%1$s" class="widget-container %2$s">',			'after_widget'  => '</li>',			'before_title'  => '<h3 class="widget-title">',			'after_title'   => '</h3>',		)	); 	// Area 5, located in the footer. Empty by default.	register_sidebar(		array(			'name'          => __( 'Third Footer Widget Area', 'twentyten' ),			'id'            => 'third-footer-widget-area',			'description'   => __( 'An optional widget area for your site footer.', 'twentyten' ),			'before_widget' => '<li id="%1$s" class="widget-container %2$s">',			'after_widget'  => '</li>',			'before_title'  => '<h3 class="widget-title">',			'after_title'   => '</h3>',		)	); 	// Area 6, located in the footer. Empty by default.	register_sidebar(		array(			'name'          => __( 'Fourth Footer Widget Area', 'twentyten' ),			'id'            => 'fourth-footer-widget-area',			'description'   => __( 'An optional widget area for your site footer.', 'twentyten' ),			'before_widget' => '<li id="%1$s" class="widget-container %2$s">',			'after_widget'  => '</li>',			'before_title'  => '<h3 class="widget-title">',			'after_title'   => '</h3>',		)	);}

Changelog

Introduced in Twenty Ten 1.0. Unchanged from 6.7.7 through 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 7.1.0 tag, from src/wp-content/themes/twentyten/functions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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