phpcmsv9多表联合查询分页功能实现

phpcms v9里面自带的listinfo分页函数蛮好用的，可惜啊。不支持多表查询并分页。

看了一下前台模板层支持get标签，支持多表查询，支持分页。刚好可以把这个功能搬到后台来使用。

我们现在对get_model.class.php进行改造使他能支持多表查询并分页，分享给大家

<?php
defined('IN_PHPCMS') or exit('No permission resources.');
pc_base::load_sys_class('model', '', 0);
class get_model extends model {
public $db_config, $db_setting;
public function __construct($db_config = array(), $db_setting = '') {
if (!$db_config) {
$this->db_config = pc_base::load_config('database');
} else {
$this->db_config = $db_config;
}
if (!$db_setting) {
$this->db_setting = 'default';
} else {
$this->db_setting = $db_setting;
}

parent::__construct();
if ($db_setting && $db_config[$db_setting]['db_tablepre']) {
$this->db_tablepre = $db_config[$db_setting]['db_tablepre'];
}
}

public function sql_query($sql) {
if (!empty($this->db_tablepre)) $sql = str_replace('phpcms_', $this->db_tablepre, $sql);
return parent::query($sql);
}

public function fetch_next() {
return $this->db->fetch_next();
}
//自定义分页查询{支持多表}
public function multi_listinfo($where = '', $page = 1, $pagesize = 20, $key='', $setpages = 10,$urlrule = '',$array = array()) {
$sql = preg_replace('/select([^from].*)from/i', "SELECT COUNT(*) as count FROM ", $where);
$this->sql_query($sql);
$c = $this->fetch_next();
$this->number = $c['count'];
$page = max(intval($page), 1);
$offset = $pagesize*($page-1);
$this->pages = pages($this->number, $page, $pagesize, $urlrule, $array, $setpages);

$r = $this->sql_query($where.' LIMIT '.$offset.','.$pagesize);
while(($s = $this->fetch_next()) != false){
$data[] = $s;
}
return $data;
}
}
?>

使用方法和listinfo一样：

$this->get_db = pc_base::load_model('get_model');
$page = intval($_GET['page']);
$infos = $this->get_db->muti_listinfo($where,$page);
$pages = $this->get_db->pages;

本文转自：http://www.chanyinkeji.com/phpcms-jiaocheng/10.html