template-functions-links.php

来自「php 开发的内容管理系统」· PHP 代码 · 共 528 行 · 第 1/2 页

<?php


function the_permalink() {
	echo apply_filters('the_permalink', get_permalink());
}


function permalink_link() { // For backwards compatibility
	echo apply_filters('the_permalink', get_permalink());
}


function permalink_anchor($mode = 'id') {
	global $post;
	switch ( strtolower($mode) ) {
		case 'title':
			$title = sanitize_title($post->post_title) . '-' . $id;
			echo '<a id="'.$title.'"></a>';
			break;
		case 'id':
		default:
			echo '<a id="post-' . $post->ID . '"></a>';
			break;
	}
}


function get_permalink($id = 0) {
	$rewritecode = array(
		'%year%',
		'%monthnum%',
		'%day%',
		'%hour%',
		'%minute%',
		'%second%',
		'%postname%',
		'%post_id%',
		'%category%',
		'%author%',
		'%pagename%'
	);

	$post = &get_post($id);
	if ( $post->post_status == 'static' )
		return get_page_link($post->ID);
	elseif ($post->post_status == 'attachment')
		return get_attachment_link($post->ID);

	$permalink = get_settings('permalink_structure');

	if ( '' != $permalink && 'draft' != $post->post_status ) {
		$unixtime = strtotime($post->post_date);

		$category = '';
		if ( strstr($permalink, '%category%') ) {
			$cats = get_the_category($post->ID);
			$category = $cats[0]->category_nicename;
			if ( $parent=$cats[0]->category_parent )
				$category = get_category_parents($parent, FALSE, '/', TRUE) . $category;
		}

		$authordata = get_userdata($post->post_author);
		$author = $authordata->user_nicename;
		$date = explode(" ",date('Y m d H i s', $unixtime));
		$rewritereplace = 
		array(
			$date[0],
			$date[1],
			$date[2],
			$date[3],
			$date[4],
			$date[5],
			$post->post_name,
			$post->ID,
			$category,
			$author,
			$post->post_name,
		);
		return apply_filters('post_link', get_settings('home') . str_replace($rewritecode, $rewritereplace, $permalink), $post);
	} else { // if they're not using the fancy permalink option
		$permalink = get_settings('home') . '/?p=' . $post->ID;
		return apply_filters('post_link', $permalink, $post);
	}
}

function get_page_link($id = false) {
	global $post, $wp_rewrite;

	if ( !$id )
		$id = $post->ID;

	$pagestruct = $wp_rewrite->get_page_permastruct();

	if ( '' != $pagestruct ) {
		$link = get_page_uri($id);
		$link = str_replace('%pagename%', $link, $pagestruct);
		$link = get_settings('home') . "/$link/";
	} else {
		$link = get_settings('home') . "/?page_id=$id";
	}

	return apply_filters('page_link', $link, $id);
}

function get_attachment_link($id = false) {
	global $post, $wp_rewrite;

	$link = false;

	if (! $id) {
		$id = $post->ID;
	}

	$object = get_post($id);
	if ( $wp_rewrite->using_permalinks() && ($object->post_parent > 0) ) {
		$parent = get_post($object->post_parent);
		$parentlink = get_permalink($object->post_parent);
		if (! strstr($parentlink, '?') )
			$link = trim($parentlink, '/') . '/' . $object->post_name . '/';
	}

	if (! $link ) {
		$link = get_bloginfo('home') . "/?attachment_id=$id";
	}

	return apply_filters('attachment_link', $link, $id);
}

function get_year_link($year) {
	global $wp_rewrite;
	if ( !$year )
		$year = gmdate('Y', time()+(get_settings('gmt_offset') * 3600));
	$yearlink = $wp_rewrite->get_year_permastruct();
	if ( !empty($yearlink) ) {
		$yearlink = str_replace('%year%', $year, $yearlink);
		return apply_filters('year_link', get_settings('home') . trailingslashit($yearlink), $year);
	} else {
		return apply_filters('year_link', get_settings('home') . '/?m=' . $year, $year);
	}
}

function get_month_link($year, $month) {
	global $wp_rewrite;
	if ( !$year )
		$year = gmdate('Y', time()+(get_settings('gmt_offset') * 3600));
	if ( !$month )
		$month = gmdate('m', time()+(get_settings('gmt_offset') * 3600));
	$monthlink = $wp_rewrite->get_month_permastruct();
	if ( !empty($monthlink) ) {
		$monthlink = str_replace('%year%', $year, $monthlink);
		$monthlink = str_replace('%monthnum%', zeroise(intval($month), 2), $monthlink);
		return apply_filters('month_link', get_settings('home') . trailingslashit($monthlink), $year, $month);
	} else {
		return apply_filters('month_link', get_settings('home') . '/?m=' . $year . zeroise($month, 2), $year, $month);
	}
}

function get_day_link($year, $month, $day) {
	global $wp_rewrite;
	if ( !$year )
		$year = gmdate('Y', time()+(get_settings('gmt_offset') * 3600));
	if ( !$month )
		$month = gmdate('m', time()+(get_settings('gmt_offset') * 3600));
	if ( !$day )
		$day = gmdate('j', time()+(get_settings('gmt_offset') * 3600));

	$daylink = $wp_rewrite->get_day_permastruct();
	if ( !empty($daylink) ) {
		$daylink = str_replace('%year%', $year, $daylink);
		$daylink = str_replace('%monthnum%', zeroise(intval($month), 2), $daylink);
		$daylink = str_replace('%day%', zeroise(intval($day), 2), $daylink);
		return apply_filters('day_link', get_settings('home') . trailingslashit($daylink), $year, $month, $day);
	} else {
		return apply_filters('day_link', get_settings('home') . '/?m=' . $year . zeroise($month, 2) . zeroise($day, 2), $year, $month, $day);
	}
}

function get_feed_link($feed='rss2') {
	global $wp_rewrite;
	$do_perma = 0;
	$feed_url = get_settings('siteurl');
	$comment_feed_url = $feed_url;

	$permalink = $wp_rewrite->get_feed_permastruct();
	if ( '' != $permalink ) {
		if ( false !== strpos($feed, 'comments_') ) {
			$feed = str_replace('comments_', '', $feed);
			$permalink = $wp_rewrite->get_comment_feed_permastruct();
		}

		if ( 'rss2' == $feed )
			$feed = '';

		$permalink = str_replace('%feed%', $feed, $permalink);
		$permalink = preg_replace('#/+#', '/', "/$permalink/");
		$output =  get_settings('home') . $permalink;
	} else {
		if ( false !== strpos($feed, 'comments_') )
			$feed = str_replace('comments_', 'comments-', $feed);

		$output = get_settings('home') . "/?feed={$feed}";
	}

	return apply_filters('feed_link', $output, $feed);
}

function edit_post_link($link = 'Edit This', $before = '', $after = '') {
	global $post;

	if ( ! current_user_can('edit_post', $post->ID) )
		return;

	if ( is_attachment() )
		return;
	else
		$file = 'post';

	$location = get_settings('siteurl') . "/wp-admin/{$file}.php?action=edit&amp;post=$post->ID";
	echo $before . "<a href=\"$location\">$link</a>" . $after;
}

function edit_comment_link($link = 'Edit This', $before = '', $after = '') {
	global $post, $comment;

	if ( ! current_user_can('edit_post', $post->ID) )
		return;

	$location = get_settings('siteurl') . "/wp-admin/post.php?action=editcomment&amp;comment=$comment->comment_ID";
	echo $before . "<a href='$location'>$link</a>" . $after;
}

// Navigation links

function get_previous_post($in_same_cat = false, $excluded_categories = '') {
	global $post, $wpdb;

	if( !is_single() || is_attachment() )
		return null;

	$current_post_date = $post->post_date;

	$join = '';
	if ( $in_same_cat ) {
		$join = " INNER JOIN $wpdb->post2cat ON $wpdb->posts.ID= $wpdb->post2cat.post_id ";
		$cat_array = get_the_category($post->ID);
		$join .= ' AND (category_id = ' . intval($cat_array[0]->cat_ID);
		for ( $i = 1; $i < (count($cat_array)); $i++ ) {
			$join .= ' OR category_id = ' . intval($cat_array[$i]->cat_ID);
		}
		$join .= ')'; 
	}

	$sql_exclude_cats = '';
	if ( !empty($excluded_categories) ) {
		$blah = explode('and', $excluded_categories);
		foreach ( $blah as $category ) {
			$category = intval($category);
			$sql_exclude_cats .= " AND post_category != $category";
		}
	}

	return @$wpdb->get_row("SELECT ID, post_title FROM $wpdb->posts $join WHERE post_date < '$current_post_date' AND post_status = 'publish' " . ( empty($GLOBALS["wp_xoops_author"])? "" : " AND post_author = " . intval($GLOBALS["wp_xoops_author"]) ) . " $sqlcat $sql_exclude_cats ORDER BY post_date DESC LIMIT 1");
}