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WP_Theme_JSON::should_override_preset( array $theme_json, array $path, bool|array $override ): bool|null

Since
5.9.0
Source
wp-includes/class-wp-theme-json.php:4512
Determines whether a presets should be overridden or not.

Compatibility

Deprecated in WordPress 6.0.0. Use {@see 'get_metadata_boolean'} instead.

WordPress
since 5.9.0
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.

Parameters

$theme_jsonarray
The theme.json like structure to inspect.
$patharray
Path to inspect.
$overridebool|array
Data to compute whether to override the preset.

Return value

bool|null
True if the preset should override the defaults, false if not. Null if the override parameter is invalid.

Performance profile

How much work a call to WP_Theme_JSON::should_override_preset() 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
11–36

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 41.

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 callbacksdo_action()one call below WP_Theme_JSON::should_override_preset()

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 · 3 distinct outcomes

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

WhenInstructionsCalls it makes
always11–13_deprecated_function()
!is_bool($override) && is_array($override) && isset($value)25_deprecated_function(), array_merge(), _wp_array_get()
!is_bool($override) && is_array($override) && !isset($value)35–36_deprecated_function(), array_merge(), _wp_array_get(), array_merge(), _wp_array_get()

Across PHP versions

Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 41 instructions, 11–36 executed per call, 4 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

Source code

	protected static function should_override_preset( $theme_json, $path, $override ) {		_deprecated_function( __METHOD__, '6.0.0', 'get_metadata_boolean' ); 		if ( is_bool( $override ) ) {			return $override;		} 		/*		 * The relationship between whether to override the defaults		 * and whether the defaults are enabled is inverse:		 *		 * - If defaults are enabled  => theme presets should not be overridden		 * - If defaults are disabled => theme presets should be overridden		 *		 * For example, a theme sets defaultPalette to false,		 * making the default palette hidden from the user.		 * In that case, we want all the theme presets to be present,		 * so they should override the defaults.		 */		if ( is_array( $override ) ) {			$value = _wp_array_get( $theme_json, array_merge( $path, $override ) );			if ( isset( $value ) ) {				return ! $value;			} 			// Search the top-level key if none was found for this node.			$value = _wp_array_get( $theme_json, array_merge( array( 'settings' ), $override ) );			if ( isset( $value ) ) {				return ! $value;			} 			return true;		} 		return null;	}

Changelog

Introduced in 5.9.0. One change between 6.7.7 and 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.

7.0.4
Return type changed from bool to bool|null.verified against source
6.0.0
Deprecated. Use 'get_metadata_boolean' instead.from the docblock
5.9.0
Introduced.from the docblock

About this page

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