Question

Ok, I can’t come to grips with this ob_start and ob_end_clean code…

Basically, I am trying to output PHP code within a page section.

Here is my source code:

$content = trim(html_entity_decode($context['page_data']['body'], ENT_QUOTES, $context['character_set']));
$content = trim($content, '<?php');
$content = trim($content, '?>');

function dream_error_handler($output)
{
    $error = error_get_last();
    $output = "";
    if (!empty($error))
        foreach ($error as $info => $string)
            if ($info == 'message')
                $output .= $string;

    return $output;
}

ob_start('dream_error_handler');
eval($content);
$code = ob_get_contents();
ob_end_clean();

$context['page_data']['body'] = $code;

Now, in the template function, I am using this:

global $context;

echo '
                <div class="cat_bar">
                    <h3 class="catbg">
                        ', $context['page_data']['title'], '
                    </h3>
                </div>
                <span class="upperframe"><span></span></span>
                    <div class="roundframe">
                        ', $context['page_data']['body'], '
                    </div>
                <span class="lowerframe"><span><!-- // --></span></span>
            ';

So why am I getting this error message?

HTTP Error 500 (Internal Server
Error): An unexpected condition was
encountered while the server was
attempting to fulfill the request.

What am I doing wrong here? The $context[‘page_data’][‘body’] has valid PHP code, a simple echo 'Hello World'; but it gives me this 500 Internal Server Error. Why?

Answer 1

PHP’s eval() shouldn’t be called for a string containing <?php ?> as it is assumed that the contents of the string itself is pure PHP code. So you should be able to remove the two trim() calls you’re making in addition to using @Boldewyn’s suggestion.