Say I have this code:
class control {
function public_home()
{
$pagina=$this->load_public_page();
...
echo $pagina;
}
...
function load_public_page($localnode="") {
global $language;
if ($localnode != "") { $localnode="_" . $localnode; }
$langlink = "http://" . PAGE_INDEX;
if ($language != "es") { $langlink = $langlink . "/" . $language . "/"; }
ob_start();
include_once 'page.php';
include_once 'header.php';
$pagina=ob_get_contents();
ob_end_clean();
return $pagina;
}
...
}
And then, in page.php:
<?php
echo "LANG " . $langlink;
echo "NODE " . $localnode;
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
...
page.php should be able to access both $langlink and $localnode variables without problems, right? (I have tried with a simplified example and it does work). Well, in my case it doesn't; no matter how I try, the code in page.php says that $langlink and $localnode are undefined.
Not only that: if I add a var_dump(debug_backtrace()) to page.php, it will show me only:
array(1) {
[0]=>
array(3) {
["file"]=>
string(53) "index.php"
["line"]=>
int(55)
["function"]=>
string(12) "include_once"
}
}
In other words, it doesn't pick up neither the load_public_page function, not its containing class... No wonder it can't find those variables.
It's extremely odd, because look at the simplified example I mentioned above:
class Ble {
function bla() {
$a=127;
$pagina=$this->otrosi();
echo $pagina;
}
function otrosi($bbb="") {
$a=666;
ob_start();
include_once('b.php');
$pagina=ob_get_contents();
ob_end_clean();
return $pagina;
}
}
$g=new Ble();
$g->bla();
Where b.php is:
<p>BBB is: <?php echo $bbb; ?></p>
<p>What is A? <?php echo $a; ?>
It does print $a as 666, as it should, and of course, if I add a debug_backtrace in b.php, it shows me the full stack trace: object Ble, function bla, function otrosi....
As the title says: does anyone know of any circunstances in which an include_once or output buffering might reset the stack in PHP? I'm a bit desperate, because this is one of those things where, according to docs and simple examples, it SHOULD work... and yet it doesn't.