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function is not described

_get_plugin_from_callback() WP 5.0.0

Internal helper function to find the plugin from a meta box callback.

No Hooks.

Return

Array/null. The plugin that the callback belongs to, or null if it doesn't belong to a plugin.

Usage

_get_plugin_from_callback( $callback );
$callback(callable) (required)
The callback function to check.

Code of get plugin from callback: wp-admin/includes/template.php VER 5.0.3

<?php
function _get_plugin_from_callback( $callback ) {
	try {
		if ( is_array( $callback ) ) {
			$reflection = new ReflectionMethod( $callback[0], $callback[1] );
		} elseif ( is_string( $callback) && false !== strpos( $callback, '::' ) ) {
			$reflection = new ReflectionMethod( $callback );
		} else {
			$reflection = new ReflectionFunction( $callback );
		}
	} catch ( ReflectionException $exception ) {
		// We could not properly reflect on the callable, so we abort here.
		return null;
	}

	// Don't show an error if it's an internal PHP function.
	if ( ! $reflection->isInternal() ) {

		// Only show errors if the meta box was registered by a plugin.
		$filename = wp_normalize_path( $reflection->getFileName() );
		$plugin_dir = wp_normalize_path( WP_PLUGIN_DIR );
		if ( strpos( $filename, $plugin_dir ) === 0 ) {
			$filename = str_replace( $plugin_dir, '', $filename );
			$filename = preg_replace( '|^/([^/]*/).*$|', '\\1', $filename );

			$plugins = get_plugins();
			foreach ( $plugins as $name => $plugin ) {
				if ( strpos( $name, $filename ) === 0 ) {
					return $plugin;
				}
			}
		}
	}

	return null;
}