wp-includes/general-template.php:3847Retrieves a list of unique hosts of all enqueued scripts and styles.
string[]function wp_dependencies_unique_hosts() { global $wp_scripts, $wp_styles; $unique_hosts = array(); foreach ( array( $wp_scripts, $wp_styles ) as $dependencies ) { if ( $dependencies instanceof WP_Dependencies && ! empty( $dependencies->queue ) ) { foreach ( $dependencies->queue as $handle ) { if ( ! isset( $dependencies->registered[ $handle ] ) ) { continue; } /* @var _WP_Dependency $dependency */ $dependency = $dependencies->registered[ $handle ]; $parsed = wp_parse_url( $dependency->src ); if ( ! empty( $parsed['host'] ) && ! in_array( $parsed['host'], $unique_hosts, true ) && $parsed['host'] !== $_SERVER['SERVER_NAME'] ) { $unique_hosts[] = $parsed['host']; } } } } return $unique_hosts;}Introduced in 4.6.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/general-template.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.