Category ID Issue

Hi

Ok this is a little complex. I am creating a plugin, and want to find the category ID from the Post page.

That’s the easy part.

What makes it complex is I am doing it within an ob_start (started in a ‘template_redirect’ action) as I want to edit the full page before it is returned to the browser. Again that is easy enough from the ob_start function.

With the ID returned I want to execute some php stored in an sql field. I am trying to do this from with the ob_start function

<b> $tui_cifp_insertvalue = tui_cifp_evaluate_html($tui_cifp_insertvalue); </b>

function tui_cifp_evaluate_html($string) {
return preg_replace_callback("/(<\?php|<\?|< \?php)(.*?)\?>/si",'EvalBuffer', $string);
}

// Runs (evals()) a '$string' of PHP code.
function EvalBuffer($string) {
ob_start();
eval("$string[2];");
$ret = ob_get_contents();
ob_end_clean();
return $ret;
}

And the php I am trying to execute.

<?php tui_findPostThumbIMG([categoryID],100,100,"categoryintro-thumbnail","","",""); ?>

This all works outside the ob_start routine even simple php doesn’t work. From within the ob_start routine the plugin breaks and a blank page returns.

So I thought I could evaluate the php before the start of the ob_start and pass the result through a global variable. That works, but at the point this starts using the following, the category ID is not available.


if ( strpos($_SERVER['REQUEST_URI'], 'wp-admin') === false ) {

global $holdvalue;

$tui_cifp_insertvalue = get_option('tui_cifp_insertvalue');

$categories = get_the_category();
$categoryID = $categories[0]->cat_ID;

$tui_cifp_insertvalue = str_replace("[categoryID]", $categoryID, $tui_cifp_insertvalue);

$holdvalue = tui_cifp_evaluate_html($tui_cifp_insertvalue);

add_action('template_redirect','tui_cifp_ob_start'); //

}

function tui_cifp_ob_start()
{

ob_start('tui_cifp_templatefilter');

}

Ok I am stumped … any ideas?

Thanks
Stephen