Putting code/text in variable

Hello,

I would like to know if it would be possible to put some code / text in one file in the aim to facilitate the translation of the blog’s functions by a child theme (the .mo file doesn’t allow me to do what I want)

Here’s an example with my single.php

<div class="post clearfix" id="post-<?php the_ID(); ?>">
						<!-- google_ad_section_start(weight=hight) -->
							<h1><a>" rel="<?php _e("bookmark"); ?>" title="<?php _e("Permanent Link to"); ?> <?php the_title(); ?>"><?php the_title(); ?></a></h1>
						<!-- google_ad_section_end -->

                        <p class="postinfo"><?php the_author_posts_link(); ?> on <?php the_time('M d, Y') ?> with <a>"><?php _e('Comments'); ?> <?php comments_number('0','1','%'); ?></a></p>

							<div class="entry clearfix">
							    <!-- google_ad_section_start(weight=medium) -->
								<?php the_content(''); ?>
								<!-- google_ad_section_end -->
                            <?php wp_link_pages(); ?>
							</div>

Will become :

<div class="post clearfix" id="post-<?php the_ID(); ?>">
						<!-- google_ad_section_start(weight=hight) -->
							<h1><a>" rel="<?php _e("bookmark"); ?>" title="<?php _e("Permanent Link to"); ?> <?php the_title(); ?>"><?php the_title(); ?></a></h1>
						<!-- google_ad_section_end -->

                       $var_author_links

							<div class="entry clearfix">
							    <!-- google_ad_section_start(weight=medium) -->
								<?php the_content(''); ?>
								<!-- google_ad_section_end -->
                            <?php wp_link_pages(); ?>
							</div>

$var_autor_links will be defined in a file (lang.php, which will be referred in the theme’s header) where all the attributions will be defined like this :
$var_single_author = <p class=”postinfo”><?php the_author_posts_link(); ?> on <?php the_time(‘M d, Y’) ?> with “><?php _e(‘Comments’); ?> <?php comments_number(‘0′,’1′,’%’); ?></p>

To translate this theme (who is himself a child theme) in a another language I’ll have to create a child theme, translate the lang.php, put it in the child theme’s folder and the overwriting should do the rest.

Here’s how it would look :

myblogs.com (using a child theme, it’s in English)
fr.myblogs.com (using a child theme of the child theme, it’s in French)

Any ideas on how to do this ?

Thanks you for your help.

Best regards,