function wp_thumbnails_for_homepage_preview()
{
global $wpdb;
$now = current_time('mysql', 1);
$sql = "SELECT distinct post_id\n\tFROM {$wpdb->postmeta}, {$wpdb->posts}\n\tWHERE post_id = ID\n\tAND meta_key IN ('ta-thumbnail')\n\tAND meta_value NOT LIKE '%NOIMAGEINPOST%'\n\tAND post_status = 'publish' \n\tAND post_date_gmt < '{$now}' \n\tAND post_type = 'post'\n\tORDER BY post_id DESC\n\tLIMIT 1";
$result = @mysql_query($sql, $wpdb->dbh);
$number = @mysql_num_rows($result);
if ($number == 1) {
$row = mysql_fetch_array($result);
$post_id = $row['post_id'];
$post = get_post($post_id);
$post_content = "wp-thumbnails-preview" . $post->post_content;
$post_content = wp_thumbnails_excerpt($post_content);
$post_content = str_replace("wp-thumbnails-preview", "", $post_content);
$post_id = "id=" . $post_id;
echo "<div style=\"width:550px;\">";
wp_thumbnails_for_homepage($post_id);
echo $post_content;
echo "</div>";
}
}
function wp_thumbnails_for_homepage_auto_excerpt($excerpt)
{
$auto = get_option('thumbnails_anywhere_options');
if (is_home() && $auto['auto_home'] == "true" || is_category() && $auto['auto_category'] == "true" || is_search() && $auto['auto_search'] == "true" || is_tag() && $auto['auto_tag_page'] == "true") {
$style = "single";
if (is_home()) {
$style = $auto['auto_home_style'];
} else {
if (is_category()) {
$style = $auto['auto_cat_style'];
} else {
if (is_tag()) {
$style = $auto['auto_tag_style'];
} else {
if (is_search()) {
$style = $auto['auto_search_style'];
}
}
}
}
if ($style == "multiple") {
$thumbnail = wp_thumbnails_for_single_post('display=false');
} else {
if ($style == "smart") {
$thumbnail = wp_thumbnails_for_smart_homepage('display=false');
} else {
$thumbnail = wp_thumbnails_for_homepage('display=false');
}
}
//当前的 filter 也就是 $wp_current_filter 数组中的最后一个，end() 操作数组指针返回数组中最后一个值。
//global $wp_current_filter;
//echo "current filters in auto_excerpt: ".end( $wp_current_filter )."<br>";
return $thumbnail . $excerpt;
} else {
return $excerpt;
}
}