wp-blog-header.php

是一个优秀的语义个人发布平台

        $whichcat .= get_category_children($cat_array[$i], ' '.$andor.' category_id '.$eq.' ');
    }
    $whichcat .= ')';
    if ($eq == '!=') {
        $cat = '-'.$cat; // Put back the knowledge that we are excluding a category.
    }
}

// Category stuff for nice URIs

if ('' != $category_name) {
    if (stristr($category_name,'/')) {
        $category_name = explode('/',$category_name);
        if ($category_name[count($category_name)-1]) {
        $category_name = $category_name[count($category_name)-1]; // no trailing slash
        } else {
        $category_name = $category_name[count($category_name)-2]; // there was a trailling slash
        }
    }
    $category_name = preg_replace('|[^a-z0-9-_]|i', '', $category_name);
    $tables = ", $tablepost2cat, $tablecategories";
    $join = " LEFT JOIN $tablepost2cat ON ($tableposts.ID = $tablepost2cat.post_id) LEFT JOIN $tablecategories ON ($tablepost2cat.category_id = $tablecategories.cat_ID) ";
    $whichcat = " AND (category_nicename = '$category_name'";
    $cat = $wpdb->get_var("SELECT cat_ID FROM $tablecategories WHERE category_nicename = '$category_name'");
    $whichcat .= get_category_children($cat, " OR category_id = ");
    $whichcat .= ")";
}

// Author/user stuff
$users = $wpdb->get_results("SELECT * FROM $tableusers WHERE user_level > 0");
foreach ($users as $user) {
    $cache_userdata[$user->ID] = $user;
}

if ((empty($author)) || ($author == 'all') || ($author == '0')) {
    $whichauthor='';
} else {
    $author = ''.urldecode($author).'';
    $author = addslashes_gpc($author);
    if (stristr($author, '-')) {
        $eq = '!=';
        $andor = 'AND';
        $author = explode('-', $author);
        $author = ''.intval($author[1]);
    } else {
        $eq = '=';
        $andor = 'OR';
    }
    $author_array = explode(' ', $author);
    $whichauthor .= ' AND (post_author '.$eq.' '.intval($author_array[0]);
    for ($i = 1; $i < (count($author_array)); $i = $i + 1) {
        $whichauthor .= ' '.$andor.' post_author '.$eq.' '.intval($author_array[$i]);
    }
    $whichauthor .= ')';
}

// Author stuff for nice URIs

if ('' != $author_name) {
    if (stristr($author_name,'/')) {
        $author_name = explode('/',$author_name);
        if ($author_name[count($author_name)-1]) {
        $author_name = $author_name[count($author_name)-1];#no trailing slash
        } else {
        $author_name = $author_name[count($author_name)-2];#there was a trailling slash
        }
    }
    $author_name = preg_replace('|[^a-z0-9-_]|', '', strtolower($author_name));
    $author = $wpdb->get_var("SELECT ID FROM $tableusers WHERE user_nicename='".$author_name."'");
    $whichauthor .= ' AND (post_author = '.intval($author).')';
}

$where .= $search.$whichcat.$whichauthor;

if ((empty($order)) || ((strtoupper($order) != 'ASC') && (strtoupper($order) != 'DESC'))) {
    $order='DESC';
}

// Order by
if (empty($orderby)) {
    $orderby='date '.$order;
} else {
    // Used to filter values
    $allowed_keys = array('author','date','category','title');
    $orderby = urldecode($orderby);
    $orderby = addslashes_gpc($orderby);
    $orderby_array = explode(' ',$orderby);
    if (!in_array($orderby_array[0],$allowed_keys)) {
        $orderby_array[0] = 'date';
    }
    $orderby = $orderby_array[0].' '.$order;
    if (count($orderby_array)>1) {
        for ($i = 1; $i < (count($orderby_array)); $i = $i + 1) {
            // Only allow certain values for safety
            if (in_array($orderby_array[$i],$allowed_keys)) {
                $orderby .= ',post_'.$orderby_array[$i].' '.$order;
            }
        }
    }
}

if ((!$whichcat) && (!$m) && (!$p) && (!$w) && (!$s) && empty($poststart) && empty($postend)) {
    if ($what_to_show == 'posts') {
        $limits = ' LIMIT '.$posts_per_page;
    } elseif ($what_to_show == 'days' && empty($monthnum) && empty($year) && empty($day)) {
        $lastpostdate = get_lastpostdate();
        $lastpostdate = mysql2date('Y-m-d 00:00:00',$lastpostdate);
        $lastpostdate = mysql2date('U',$lastpostdate);
        $otherdate = date('Y-m-d H:i:s', ($lastpostdate - (($posts_per_page-1) * 86400)));
        $where .= " AND post_date > '$otherdate'";
    }
}

if ( !empty($postend) && ($postend > $poststart) && (!$m) && empty($monthnum) && empty($year) && empty($day) &&(!$w) && (!$whichcat) && (!$s) && (!$p)) {
    if ($what_to_show == 'posts' || ($what_to_show == 'paged' && (!$paged))) {
        $poststart = intval($poststart);
        $postend = intval($postend);
        $limposts = $postend - $poststart;
        $limits = ' LIMIT '.$poststart.','.$limposts;
    } elseif ($what_to_show == 'days') {
        $poststart = intval($poststart);
        $postend = intval($postend);
        $limposts = $postend - $poststart;
        $lastpostdate = get_lastpostdate();
        $lastpostdate = mysql2date('Y-m-d 00:00:00',$lastpostdate);
        $lastpostdate = mysql2date('U',$lastpostdate);
        $startdate = date('Y-m-d H:i:s', ($lastpostdate - (($poststart -1) * 86400)));
        $otherdate = date('Y-m-d H:i:s', ($lastpostdate - (($postend -1) * 86400)));
        $where .= " AND post_date > '$otherdate' AND post_date < '$startdate'";
    }
} else {
    if (($what_to_show == 'paged') && (!$p) && (!$more)) {
        if ($pagenow != 'post.php') {
            $pgstrt = '';
            if ($paged) {
                $pgstrt = (intval($paged) -1) * $posts_per_page . ', ';
            }
            $limits = 'LIMIT '.$pgstrt.$posts_per_page;
        } else {
            if (($m) || ($p) || ($w) || ($s) || ($whichcat)) {
                $limits = '';
            } else {
                $pgstrt = '';
                if ($paged) {
                    $pgstrt = (intval($paged) -1) * $posts_per_page . ', ';
                }
                $limits = 'LIMIT '.$pgstrt.$posts_per_page;
            }
        }
    }
    elseif (($m) || ($p) || ($w) || ($s) || ($whichcat) || ($author) || $monthnum || $year || $day) {
        $limits = '';
    }
}

if ($p == 'all') {
    $where = '';
}

$now = gmdate('Y-m-d H:i:59');

if ($pagenow != 'post.php' && $pagenow != 'edit.php') {
    if ((empty($poststart)) || (empty($postend)) || !($postend > $poststart)) {
        $where .= " AND post_date_gmt <= '$now'";
    }

    $distinct = 'DISTINCT';

    if ($use_gzipcompression) {
        // gzipping the output of the script
        gzip_compression();
    }
}
$where .= ' AND (post_status = "publish"';

// Get private posts
if (isset($user_ID) && ('' != intval($user_ID)))
    $where .= " OR post_author = $user_ID AND post_status != 'draft')";
else
    $where .= ')';
$where .= " GROUP BY $tableposts.ID";
$request = " SELECT $distinct * FROM $tableposts $join WHERE 1=1".$where." ORDER BY post_$orderby $limits";


if ($preview) {
    $request = 'SELECT 1-1'; // dummy mysql query for the preview
    // little funky fix for IEwin, rawk on that code
    $is_winIE = ((preg_match('/MSIE/',$HTTP_USER_AGENT)) && (preg_match('/Win/',$HTTP_USER_AGENT)));
    if (($is_winIE) && (!isset($IEWin_bookmarklet_fix))) {
        $preview_content =  preg_replace('/\%u([0-9A-F]{4,4})/e',  "'&#'.base_convert('\\1',16,10).';'", $preview_content);
    }
}

// error_log("$request");
// echo $request;
$posts = $wpdb->get_results($request);

// No point in doing all this work if we didn't match any posts.
if ($posts) {
    // Get the categories for all the posts
    foreach ($posts as $post) {
        $post_id_list[] = $post->ID;
    }
    $post_id_list = implode(',', $post_id_list);

    $dogs = $wpdb->get_results("SELECT DISTINCT
        ID, category_id, cat_name, category_nicename, category_description, category_parent
        FROM $tablecategories, $tablepost2cat, $tableposts
        WHERE category_id = cat_ID AND post_id = ID AND post_id IN ($post_id_list)");
        
    foreach ($dogs as $catt) {
        $category_cache[$catt->ID][] = $catt;
    }

    // Do the same for comment numbers
    $comment_counts = $wpdb->get_results("SELECT ID, COUNT( comment_ID ) AS ccount
        FROM $tableposts
        LEFT JOIN $tablecomments ON ( comment_post_ID = ID  AND comment_approved =  '1')
        WHERE post_status =  'publish' AND ID IN ($post_id_list)
        GROUP BY ID");
    
	if ($comment_counts) {
	    foreach ($comment_counts as $comment_count) {
	        $comment_count_cache["$comment_count->ID"] = $comment_count->ccount;
	    }
	}

	// Get post-meta info
	if ( $meta_list = $wpdb->get_results("
			SELECT post_id,meta_key,meta_value 
			FROM $tablepostmeta 
			WHERE post_id IN($post_id_list)
			ORDER BY post_id,meta_key
		", ARRAY_A) ) {
		
		// Change from flat structure to hierarchical:
		$post_meta_cache = array();
		foreach ($meta_list as $metarow) {
			$mpid = $metarow['post_id'];
			$mkey = $metarow['meta_key'];
			$mval = $metarow['meta_value'];
			
			// Force subkeys to be array type:
			if (!isset($post_meta_cache[$mpid]) || !is_array($post_meta_cache[$mpid]))
				$post_meta_cache[$mpid] = array();
			if (!isset($post_meta_cache[$mpid]["$mkey"]) || !is_array($post_meta_cache[$mpid]["$mkey"]))
				$post_meta_cache[$mpid]["$mkey"] = array();
			
			// Add a value to the current pid/key:
			$post_meta_cache[$mpid][$mkey][] = $mval;
		}
	}


    if (1 == count($posts)) {
        if ($p || $name) {
            $more = 1;
            $single = 1;
        }
		if ($s && empty($paged)) { // If they were doing a search and got one result
			if (!strstr($_SERVER['PHP_SELF'], 'wp-admin')) // And not in admin section
				header('Location: ' . get_permalink($posts[0]->ID));
		}
    }
} // End if posts.
?>