Support » Fixing WordPress » Category ID Issue

  • Resolved stephenbaugh



    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) {
    $ret = ob_get_contents();
    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()



    Ok I am stumped … any ideas?


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