more tag funktioniert nicht

<?php
/*
Template Name: Blog
Description: If you want to set up an alternate blog page, just use this template for your page.
*/
?>


<?php get_header(); ?>


<?php
    $posts_wanted = get_option('posts_per_page');
    query_posts("showposts=$posts_wanted");
    $post_class = 'odd';
?>


<?php if(have_posts()) : while(have_posts()) : the_post(); ?>


    <div class="post <?php echo $post_class; ?>">


        <h2>
            <a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>"><?php the_title(); ?></a>
        </h2>


        <p class="byline">
            <?php _e('Von','options'); ?> <?php the_author_posts_link(); ?> &bull; 
            <?php the_time(__('j.F Y','options')); ?> &bull; 
            <?php comments_popup_link(__('Keine Kommentare','options'), '1 '.__('Comment','options'), '% '.__('Comments','options')); ?>
            <?php edit_post_link('<span class="edit-post">'.__('[Edit]','options').'</span>', ' ', ''); ?>
        </p>


        <div class="entry">
            <?php the_content(__('Read more &raquo;','options')); ?>
        </div>
        
        <div class="post-meta-data">
            <p>
                <span class="categories"><?php _e('Categories: ','options'); ?> <?php the_category(', '); ?></span>
                <br />
                <span class="tags"><?php _e('Tags: ','options'); ?> <?php the_tags('', ', ', ''); ?></span>
            </p>
        </div>
    </div>


    <?php
        if('odd' == $post_class) $post_class = 'even';
        else $post_class == 'odd';
    ?>


    <?php endwhile; ?>


<?php else: ?>


    <p><?php _e('Sorry, no posts matched your criteria.','options'); ?></p>


<?php endif; ?>


<?php get_footer(); ?>

<?php
/*


*/
    $count = count($posts);
    for ($i = 0; $i < $count; ++$i) {
        $posts[$i]->post_content = tguy_em_addmore($posts[$i]->post_content);
    }
    return $posts;
}


function tguy_em_addmore($post_content) {
/*    Add a "more" comment in an appropriate place, unless
    there is already a "<!--more-->" (we don't add an extra one) or
    a "<!--nevermore-->" (user has disabled evermore for this post).
*/
    // Only continue if content has no "more" and no "nevermore"
    if ((false === strpos($post_content, '<!--more-->'))
    &&  (false === strpos($post_content, '<!--nevermore-->'))) {
        $options = get_option('tguy_more_evermore');
        if (!$options) {
            $options = tguy_em_get_default_options();
        }
        $char_skip_count = intval($options['em_min_chars_to_skip']);
        $para_skip_count = intval($options['em_paras_to_skip']);
        $link_on_new_para = $options['em_link_on_new_para'];


        // Skip a number of initial characters
        $skipped_chars = substr($post_content, 0, $char_skip_count);
        $unskipped_chars = substr($post_content, $char_skip_count);


        // Use regex-fu to break the post into paragraphs. This scheme
        // may fail on pathological combinations of <br> and
        // newline chars. It can also fail on nested block-level tags
        // (e.g. nested divs). So don't do that!


        // Pattern matching an HTML tag that indicates a paragraph
        $para_tag = '(?:p|pre|blockquote|div|ol|ul|h[1-6]|table)';
        // Pattern matching two consecutive newlines with optional space between
        $double_newline = "(?:\r\n *\r\n|\r *\r|\n *\n|<br\s*/?>\s*<br\s*/?>)";
        // Pattern matching optional whitespace
        $ws = '\s*';
        // Pattern matching paragraph body (must start at the beginning
        // of a paragraph, and be followed by a paragraph end)
        $body = '.+?';
        // Pattern matching the end of a paragraph
        $end = "(?:$double_newline|</$para_tag>|(?<=\W)(?=$ws<$para_tag\W))";


        // Get all the skipped paragraphs, but separate the end of the final paragraph so
        // we can add a "run-on" more if necessary.
        // regex finds: a para body; followed by (n-1) end+body pairs; followed by an end; followed by something.
        $para_skip_dec = $para_skip_count - 1;
        if (preg_match("!^($ws$body(?:$end$ws$body){".$para_skip_dec."})($end)$ws\S!is", $unskipped_chars, $matches)) {
            $skipped_paras = $matches[1];
            $skipped_end = $matches[2];
            $unskipped_paras = substr($unskipped_chars, strlen($skipped_paras) + strlen($skipped_end));
            if ($link_on_new_para) {
                // Add 2 newlines after the more, to stop WP adding
                // a <br> after the more which leaves a spurious blank line.
                return $skipped_chars . $skipped_paras . $skipped_end . "<!--more-->\n\n" . $unskipped_paras;
            } else {
                return $skipped_chars . $skipped_paras . '<!--more-->' . $skipped_end . $unskipped_paras;
            }
        }
    }
    // No "more" was added. If the request includes the magic word, then add diagnostic info in a comment at the end of the post
    if ($_GET['evermore_diagnostics']) {
        return $post_content . "<!--\n" . htmlspecialchars(tguy_em_get_diagnostics($post_content, $options)) . "\n-->";
    }
    return $post_content;
}


function tguy_em_get_diagnostics(&$post_content, $options) {
    // Return a string with diagnostic info on the raw post data.
    $diagnostic_reason = "";


    $char_skip_count = intval($options['em_min_chars_to_skip']);
    $para_skip_count = intval($options['em_paras_to_skip']);
    $link_on_new_para = $options['em_link_on_new_para'];


    $diagnostic_extra_info = "";
    if (false !== strpos($post_content, '<!--more-->')) {
        $diagnostic_reason .= "Post contained (more)";
    }
    if (false !== strpos($post_content, '<!--nevermore-->')) {
        $diagnostic_reason .= "Post contained (nevermore)";
    }
    if (strlen($post_content) <= $char_skip_count) {
        $diagnostic_reason .= "Post was too short";
    }
    if ($diagnostic_reason == "") {
        // We must analyse the content to determine the reason
        $diagnostic_reason .= "Post did not contain end-of-paragraph";
        // Mark newlines, escape HTML
        $diagnostic_unskipped_chars = substr($post_content, $char_skip_count);
        $diagnostic_unskipped_chars = str_replace("\\", "\\\\", $diagnostic_unskipped_chars);
        $diagnostic_unskipped_chars = str_replace(
            array("\n", "\r"),
            array("\\n", "\\r"),
            $diagnostic_unskipped_chars);
        $diagnostic_extra_info = "Post content (unskipped)
[" . $diagnostic_unskipped_chars . "]
";
    }
    return "Evermore was not triggered. Diagnostics:
Skip chars [$char_skip_count] 
Skip paragraphs [$para_skip_count] 
New paragraph [".($link_on_new_para?'true':'false')."] 
Post length [".strlen($post_content)."] 
Reason [$diagnostic_reason] 
".$diagnostic_extra_info;
}


function tguy_em_add_admin_pages() {
    add_options_page('Evermore', 'Evermore', 10, __FILE__, 'tguy_em_options_page');


    // Create option in options database if not there already:
    add_option('tguy_more_evermore', tguy_em_get_default_options(), 'Options for the Evermore plugin');
}


function tguy_em_get_default_options() {
    $options = array();
    $options['em_min_chars_to_skip'] = 100;
    $options['em_paras_to_skip'] = 1;
    $options['em_link_on_new_para'] = true;
    return $options;
}






endif; // if (!is_plugin_page())




function tguy_em_options_page() {
    // See if user has submitted form
    if ( isset($_POST['submitted']) ) {
        $options = array();
        $options['em_min_chars_to_skip'] = intval($_POST['em_min_chars_to_skip']);
        $options['em_paras_to_skip'] = intval($_POST['em_paras_to_skip']);
        $options['em_link_on_new_para'] = (bool)($_POST['em_link_on_new_para']);


        // Remember to put all the other options into the array or they'll get lost!
        update_option('tguy_more_evermore', $options);
        echo '<div id="message" class="updated fade"><p><strong>Plugin settings saved.</strong></p></div>';
    }
    
    // Draw the Options page for the plugin.
    $options = get_option('tguy_more_evermore');


    $action_url = $_SERVER[PHP_SELF] . '?page=' . basename(__FILE__);
?>
    <div class='wrap'>
        <h2>Evermore</h2>
        <p><cite>Evermore</cite> automatically displays a short preview of your posts on your blog home page.
        The preview also appears on the archive and category pages.
        For each post, the first few paragraphs are shown along with a "read more" link to read the full post.</p>
        
        <form name="evermore" action="<?php echo $action_url; ?>" method="post">
            <input type="hidden" name="submitted" value="1" />
                
            <fieldset class="options">
            <legend>Settings</legend>
                <ul>
                    <li>
                    <label for="em_paras_to_skip">
                        Create previews containing the first
                        <input type="text" id="em_paras_to_skip" name="em_paras_to_skip"
                            size="2" maxlength="3"
                            value="<?php echo $options['em_paras_to_skip']; ?>" />
                        paragraphs of each post
                    </label>
                    </li>
                    <li>
                    <label for="em_min_chars_to_skip">
                        Ensure the preview is at least
                        <input type="text" id="em_min_chars_to_skip" name="em_min_chars_to_skip"
                            size="4" maxlength="4"
                            value="<?php echo $options['em_min_chars_to_skip']; ?>" />
                        characters long
                    </label>
                    </li>
                    <li>
                    Add a "read more" link to the full post<br />
                    <label for="em_link_on_new_para">
                        <input type="checkbox" id="em_link_on_new_para" name="em_link_on_new_para" <?php echo ($options['em_link_on_new_para']==true?"checked=\"checked\"":"") ?> />
                        Show the "Read more" link on a line by itself
                    </label><br />
                        Note that the actual text appearing on the link depends on your WordPress theme.
                    </li>
                </ul>
                <script type="text/javascript">
                <!--
                function tguy_em_set_defaults() {
                    document.getElementById("em_paras_to_skip").value = 1;
                    document.getElementById("em_min_chars_to_skip").value = 100;
                    document.getElementById("em_link_on_new_para").checked = true;
                }
                document.write('<p><input type="button" name="Defaults" value="Use Defaults" onclick="tguy_em_set_defaults(); return false;" /></p>');
                //-->
                </script>
                <noscript>
                <p><strong>Defaults:</strong> Previews contain first 1 paragraph; count first 100 characters in first paragraph; show "Read more" on a line by itself.</p>
                </noscript>
            </fieldset>
            <p class="submit"><input type="submit" name="Submit" value="Save changes &raquo;" /></p>
        </form>
    </div>
<?php
}


?>