Ok, here s the deal where I m really stuck.

I use my cms with design patterns. Where s the last final output(in design template s main file: design.php ):

<div>{CONTENT_HEADER}</div>
<div style= float:left;width:25% >{CONTENT_LEFT}</div>
<div style= float:left;width:50% >{CONTENT_CENTER}</div>
<div style= float:left;width:25% >{CONTENT_RIGHT}</div>
<div>{CONTENT_FOOTER}</div>

Where is CONTENT_XXXX is generater thought site modules:

ob_start("gz_handler");
<....... LOAD ALL THE HEADER MODULES .......>
$output0 = ob_get_contents();
ob_end_clean();

ob_start("gz_handler");
<....... LOAD ALL THE LEFT SIDE MODULES .......>
$output1 = ob_get_contents();
ob_end_clean();

ob_start("gz_handler");
<....... LOAD ALL THE CENTER SIDE MODULES .......>
$output2 = ob_get_contents();
ob_end_clean();

ob_start("gz_handler");
<....... LOAD ALL THE RIGHT SIDE MODULES .......>
....
// That s I talk about, but this is just for static html, not variables
// Push to header finalizers to override default <title></title>
$header_finalizers_array[ change_head_title_attr_to ] = $thread_data[ topic_title ];
<....... END OF ALL THE RIGHT SIDE MODULES .......>
$output3 = ob_get_contents();
ob_end_clean();

ob_start("gz_handler");
<....... LOAD ALL THE FOOTER MODULES .......>
$output5 = ob_get_contents();
ob_end_clean();

define("CONTENT_HEADER", finalize_output($output0,$header_finalizers_array));
define("CONTENT_LEFT", finalize_output($output2,$left_finalizers_array));
define("CONTENT_CENTER", finalize_output($output3,$center_finalizers_array));
define("CONTENT_RIGHT", finalize_output($output4,$right_finalizers_array));
// No need finalizations, because there are no more parts, which call content changes
define("CONTENT_FOOTER", $output5);

All is ok in 95% of cases. But, there are some cases, where I need TO GET THE CONTENT OF VARIABLE(in left side modules) which ONLY will be defined in NEXT SIDE(ex. in right side modules)

With my code, I can define the site headers in header modules , but then if I want that, I m able to change it in ex. right side, because I m able add to array the replace data requirement, which will be executed after all the side content will be generater to variables but BEFORE printing in to client browser.

function finalize_output($output="",$fin_array=array()) {
   <...>
   $output = preg_replace("#<title>.*</title>#i", "<title>".$fin_array[ change_head_title_attr_to ]."</title>", $output, 1);
   <...>
}

if(isset($object)) {
  $best_product = sqlArray(sqlQuery("SELECT * FROM tableA WHERE b= $object "));
 <..All the rest code of BEST s product..>
}

<... Print LAST 10 PRODUCTS ***>
$res = sqlquery("SELECT * FROM tableA ORDER BY id DESC LIMIT 100);
while($data = sqlarray($res)) { <..PRINT PRODUCT INFO..> }

$new = rand(0,secured($_POST[ user_input_new_products ]));
for($i=1;$i<=$new;$i++) {
  $price_diff_old_new1 = change_products_to_sql( fish_$i , 19.99);
  $price_diff_old_new2 = push_product_to_sql( crab_$i , 16.99);
  if($i==$new) {
    $object = $price_diff_old_new1+$price_diff_old_new2;
  }
}

echo "JOB IS STARTED";
  LABEL HOME:
   <INCLUDED FILE : procuts.php >
      if(isset($object) && check_is_number($object)) {
       $a = $object;
      }
      if(isset($break_me) && $break_me) {
        GOTO FINAL;
      }
   <END OF INCLUDE>
   ...

 <INCLUDED FILE : upload.php >
    $object = 999;
    $break_me = true;
    GOTO HOME;
  <END OF INCLUDE>
}
 LABEL FINAL: 
echo "JOB IS DONE";