Why does ob_get_flush() return an empty string?

[tmallen]

The cache file is created, but it's empty. I can pass in a debug string which is written successfully.

<?php
function page($name, $params = array(), $cache = false) {
    if(is_array($params)) {
        extract($params);
    } else {
        $title = $params;
    }

    function put_page($name) {
        ob_start();
        include sprintf('pages/%s.php', $name);
        $content = ob_get_clean();
        include 'pages/page.php';
        return ob_get_flush();
    }

    if($cache) {
        $cache_file = sprintf('cache/page/%s.html', $name);

        if(file_exists($cache_file)) {
            echo file_get_contents($cache_file);
            unlink($cache_file);
        } else {
            if(!is_dir('cache/page')) {
                mkdir('cache/page');
            }
            $cached = fopen($cache_file, 'w');
            fwrite($cached, put_page($name));
            fclose($cached);
        }
    } else {
        put_page($name);
    }
}

[teamatomic]

        ob_start();

        include sprintf('pages/%s.php', $name);

        $content = ob_get_clean();

        include 'pages/page.php';

        return ob_get_flush();

 

You must decide what you want to do. You use ob_get_flush to put the buffer into $content then expect return ob_get_flush to give you something from an empty buffer. Either return from the function or the contents of the buffer into $contents, but not both

 

 

HTH

Teamatomic

[tmallen]

ob_get_flush returns the contents of the output buffer. After the clean, shouldn't the include add to the buffer, being the contents of that returned string?

[teamatomic]

flush is the term. ob_get_flush flushes the buffer contents to a var, ob_put_contents flushes the buffer to page output. How can the include add to the buffer after it has already added and been flushed? if that is what you want you need to first start a new buffer.

 

ob_start();

        include sprintf('pages/%s.php', $name);

        $content = ob_get_clean();

ob_start();

        include 'pages/page.php';

        return ob_get_flush();

 

 

HTH

Teamatomic