wp_high_priority_element_flag() │ WP 6.3.0

Accesses a flag that indicates if an element is a possible candidate for fetchpriority='high'.

Internal function — this function is designed to be used by the kernel itself. It is not recommended to use this function in your code.

No Hooks.

Returns

true|false. Returns true if the high-priority element was not already marked.

Usage

wp_high_priority_element_flag( $value ): bool;
$value(true|false)
Used to change the static variable.
Default: null

Changelog

Since 6.3.0 Introduced.

wp_high_priority_element_flag() code WP 7.0

wp-includes/media.php 
function wp_high_priority_element_flag( $value = null ): bool {
	static $high_priority_element = true;

	if ( is_bool( $value ) ) {
		$high_priority_element = $value;
	}

	return $high_priority_element;
}