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WordPress

WP_Customize_Nav_Menu_Location_Control::render_content()

Since
4.3.0, 4.9.0
Source
wp-includes/customize/class-wp-customize-nav-menu-location-control.php:55
Render content just like a normal select control.

Compatibility

WordPress
since 4.9.0
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_Customize_Nav_Menu_Location_Control::render_content() 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

Touches nothing outside its own arguments.

Scaling
Scales with input

The body loops, so the work grows with how much data it finds.

Instructions
3–64

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 88.

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 WP_Customize_Nav_Menu_Location_Control::render_content()

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 · 3 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost WP_Customize_Nav_Menu_Location_Control::render_content() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
empty($value)3none
always50–56->value(), ->link(), esc_attr(), esc_attr_e(), _e(), esc_attr_e(), _e()
!empty($value)58–64->value(), esc_html(), ->link(), esc_attr(), esc_attr_e(), _e(), esc_attr_e(), _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: 88 instructions, 3–64 executed per call, 6 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

  • esc_html()Escaping for HTML blocks.
  • esc_attr()Escaping for HTML attributes.
  • selected()Outputs the HTML selected attribute.
  • esc_attr_e()Displays translated text that has been escaped for safe use in an attribute.
  • _e()Displays translated text.
  • WP_Customize_Nav_Menu_Location_Control::value()
  • WP_Customize_Nav_Menu_Location_Control::link()

Source code

	public function render_content() {		if ( empty( $this->choices ) ) {			return;		} 		$value_hidden_class    = '';		$no_value_hidden_class = '';		if ( $this->value() ) {			$value_hidden_class = ' hidden';		} else {			$no_value_hidden_class = ' hidden';		}		?>		<label>			<?php if ( ! empty( $this->label ) ) : ?>			<span class="customize-control-title"><?php echo esc_html( $this->label ); ?></span>			<?php endif; ?> 			<?php if ( ! empty( $this->description ) ) : ?>			<span class="description customize-control-description"><?php echo $this->description; ?></span>			<?php endif; ?> 			<select <?php $this->link(); ?>>				<?php				foreach ( $this->choices as $value => $label ) :					echo '<option value="' . esc_attr( $value ) . '"' . selected( $this->value(), $value, false ) . '>' . esc_html( $label ) . '</option>';				endforeach;				?>			</select>		</label>		<button type="button" class="button-link create-menu<?php echo $value_hidden_class; ?>" data-location-id="<?php echo esc_attr( $this->location_id ); ?>" aria-label="<?php esc_attr_e( 'Create a menu for this location' ); ?>"><?php _e( '+ Create New Menu' ); ?></button>		<button type="button" class="button-link edit-menu<?php echo $no_value_hidden_class; ?>" aria-label="<?php esc_attr_e( 'Edit selected menu' ); ?>"><?php _e( 'Edit Menu' ); ?></button>		<?php	}

Changelog

Introduced in 4.3.0. 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.

4.9.0
Added a button to create menus.from the docblock
4.3.0
Introduced.from the docblock

About this page

Parsed data
Generated from the wordpress-develop 7.1.0 tag, from src/wp-includes/customize/class-wp-customize-nav-menu-location-control.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.