晋太元中,武陵人捕鱼为业。缘溪行,忘路之远近。忽逢桃花林,夹岸数百步,中无杂树,芳草鲜美,落英缤纷。渔人甚异之,复前行,欲穷其林。 林尽水源,便得一山,山有小口,仿佛若有光。便舍船,从口入。初极狭,才通人。复行数十步,豁然开朗。土地平旷,屋舍俨然,有良田、美池、桑竹之属。阡陌交通,鸡犬相闻。其中往来种作,男女衣着,悉如外人。黄发垂髫,并怡然自乐。 见渔人,乃大惊,问所从来。具答之。便要还家,设酒杀鸡作食。村中闻有此人,咸来问讯。自云先世避秦时乱,率妻子邑人来此绝境,不复出焉,遂与外人间隔。问今是何世,乃不知有汉,无论魏晋。此人一一为具言所闻,皆叹惋。余人各复延至其家,皆出酒食。停数日,辞去。此中人语云:“不足为外人道也。”(间隔 一作:隔绝) 既出,得其船,便扶向路,处处志之。及郡下,诣太守,说如此。太守即遣人随其往,寻向所志,遂迷,不复得路。 南阳刘子骥,高尚士也,闻之,欣然规往。未果,寻病终。后遂无问津者。
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<?php
if(!defined('ABSPATH')) { die('You are not allowed to call this page directly.'); }
class PrliDb {
public $groups, $clicks, $links, $linkmeta;
public function __construct() {
global $wpdb;
$this->groups = "{$wpdb->prefix}prli_groups";
$this->clicks = "{$wpdb->prefix}prli_clicks";
$this->links = "{$wpdb->prefix}prli_links";
$this->linkmeta = "{$wpdb->prefix}prli_link_metas";
}
public function should_install() {
global $prli_db_version;
$old_db_version = get_option('prli_db_version');
if($prli_db_version != $old_db_version) { return true; }
return false;
}
/********* INSTALL PLUGIN ***********/
public function prli_install() {
global $wpdb, $prli_utils, $plp_update, $prli_db_version;
$wpdb->query('SET SQL_BIG_SELECTS=1'); //This may be getting set back to 0 when SET MAX_JOIN_SIZE is executed
$wpdb->query('SET MAX_JOIN_SIZE=18446744073709551615');
//$wpdb->query('SET GLOBAL innodb_large_prefix=1'); //Will fail on some installs without proper privileges still
// This was introduced in WordPress 3.5
// $char_col = $wpdb->get_charset_collate(); //This doesn't work for most non english setups
$char_col = "";
$collation = $wpdb->get_row("SHOW FULL COLUMNS FROM {$wpdb->posts} WHERE field = 'post_content'");
if(isset($collation->Collation)) {
$charset = explode('_', $collation->Collation);
if(is_array($charset) && count($charset) > 1) {
$charset = $charset[0]; //Get the charset from the collation
$char_col = "DEFAULT CHARACTER SET {$charset} COLLATE {$collation->Collation}";
}
}
//Fine we'll try it your way this time
if(empty($char_col)) { $char_col = $wpdb->get_charset_collate(); }
$prli_utils->migrate_before_db_upgrade();
require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
/* Create/Upgrade Clicks (Clicks) Table */
$sql = "CREATE TABLE {$this->clicks} (
id int(11) NOT NULL auto_increment,
ip varchar(255) default NULL,
browser varchar(255) default NULL,
btype varchar(255) default NULL,
bversion varchar(255) default NULL,
os varchar(255) default NULL,
referer varchar(255) default NULL,
host varchar(255) default NULL,
uri varchar(255) default NULL,
robot tinyint default 0,
first_click tinyint default 0,
created_at datetime NOT NULL,
link_id int(11) default NULL,
vuid varchar(25) default NULL,
PRIMARY KEY (id),
KEY link_id (link_id),
KEY ip (ip(191)),
KEY browser (browser(191)),
KEY btype (btype(191)),
KEY bversion (bversion(191)),
KEY os (os(191)),
KEY referer (referer(191)),
KEY host (host(191)),
KEY uri (uri(191)),
KEY robot (robot),
KEY first_click (first_click),
KEY vuid (vuid)".
// We won't worry about this constraint for now.
//CONSTRAINT ".$clicks_table."_ibfk_1 FOREIGN KEY (link_id) REFERENCES $pretty_links_table (id)
") {$char_col};";
dbDelta($sql);
/* Create/Upgrade Pretty Links Table */
$sql = "CREATE TABLE {$this->links} (
id int(11) NOT NULL auto_increment,
name varchar(255) default NULL,
description text default NULL,
url text default NULL,
slug varchar(255) default NULL,
nofollow tinyint(1) default 0,
sponsored tinyint(1) default 0,
track_me tinyint(1) default 1,
param_forwarding varchar(255) default NULL,
param_struct varchar(255) default NULL,
redirect_type varchar(255) default '307',
link_status varchar(64) default 'enabled',
created_at datetime NOT NULL,
updated_at datetime default NULL,
group_id int(11) default NULL,
link_cpt_id int(11) default 0,
PRIMARY KEY (id),
KEY link_cpt_id (link_cpt_id),
KEY group_id (group_id),
KEY link_status (link_status),
KEY nofollow (nofollow),
KEY sponsored (sponsored),
KEY track_me (track_me),
KEY param_forwarding (param_forwarding(191)),
KEY redirect_type (redirect_type(191)),
KEY slug (slug(191)),
KEY created_at (created_at),
KEY updated_at (updated_at)
) {$char_col};";
dbDelta($sql);
$sql = "CREATE TABLE {$this->linkmeta} (
id int(11) NOT NULL auto_increment,
meta_key varchar(255) default NULL,
meta_value longtext default NULL,
meta_order int(4) default 0,
link_id int(11) NOT NULL,
created_at datetime NOT NULL,
PRIMARY KEY (id),
KEY meta_key (meta_key(191)),
KEY link_id (link_id)
) {$char_col};";
dbDelta($sql);
$prli_utils->migrate_after_db_upgrade();
// If there are any post metas with a post_id of 0 get rid of them...
$prli_utils->clear_unknown_post_metas();
/***** SAVE OPTIONS *****/
$prli_options = PrliOptions::get_options();
$prli_options->store();
/***** SAVE DB VERSION *****/
update_option('prli_db_version', $prli_db_version);
wp_cache_delete('alloptions', 'options');
}
public function table_exists($table) {
global $wpdb;
$q = $wpdb->prepare('SHOW TABLES LIKE %s', $table);
$table_res = $wpdb->get_var($q);
return (strtolower($table_res) == strtolower($table));
}
}