function to display all of the files used in creating the page for WordPress theme

filetracker template parts functions.php

function filetracker(){
$included_files = get_included_files();
$stylesheet_dir = str_replace( '\\', '/', get_stylesheet_directory() );
$template_dir   = str_replace( '\\', '/', get_template_directory() );

foreach ( $included_files as $key => $path ) {

    $path   = '<br>'.str_replace( '\\', '/', $path );

    if ( false === strpos( $path, $stylesheet_dir ) && false === strpos( $path, $template_dir ) )
        unset( $included_files[$key] );
}
echo '<pre>'; print_r($included_files); echo '</pre>';
return;
};