phpcms筛选功能

phpcms论坛的看到的-----做筛选功能-----自定义函数

<?php
/**
 *  extention.func.php 用户自定义函数库
 *
 * @copyright                        (C) 2005-2010 PHPCMS
 * @license                           http://www.phpcms.cn/license/
 * @lastmodify                        2010-10-27
 */

 /**
 * 通过指定keyid形式显示所有联动菜单
 * @param  $keyid 菜单主id
 * @param  $linkageid  联动菜单id,0调用顶级
 * @param  $modelid 模型id
 * @param  $fieldname  字段名称
 */
function show_linkage($keyid, $linkageid = 0, $modelid = ‘‘, $fieldname=‘zone‘) {
    $datas = $infos = $array = array();
    $keyid = intval($keyid);
    $linkageid = intval($linkageid);
    //当前菜单id
    $field_value = intval($_GET[$fieldname]);
    $urlrule = structure_filters_url($fieldname,$array,1,$modelid);
    if($keyid == 0) return false;
    $datas = getcache($keyid,‘linkage‘);
    $infos = $datas[‘data‘];

    foreach($infos as $k=>$v){
        if($v[‘parentid‘]==$field_value){
            $array[$k][‘name‘] = $v[‘name‘];
            $array[$k][‘value‘] = $k;
            $array[$k][‘url‘] = str_replace(‘{$‘.$fieldname.‘}‘,$k,$urlrule);
            $array[$k][‘menu‘] = $field_value == $k ? ‘<em>‘.$v[‘name‘].‘</em>‘ : ‘<a href=‘.$array[$k][‘url‘].‘>‘.$v[‘name‘].‘</a>‘ ;
        }
    }
    return $array;
}
function structure_filters_url($fieldname,$array=array(),$type = 1,$modelid) {
        if(empty($array)) {
            $array = $_GET;
        } else {
            $array = array_merge($_GET,$array);
        }
        //TODO
        $fields = getcache(‘model_field_‘.$modelid,‘model‘);
        if(is_array($fields) && !empty($fields)) {
            ksort($fields);
            foreach ($fields as $_v=>$_k) {
                if($_k[‘filtertype‘] || $_k[‘rangetype‘]) {
                    if(strpos(URLRULE,‘.html‘) === FALSE) $urlpars .= ‘&‘.$_v.‘={$‘.$_v.‘}‘;
                    else $urlpars .= ‘-{$‘.$_v.‘}‘;
                }
            }
        }
        //后期增加伪静态等其他url规则管理，apache伪静态支持9个参数
        if(strpos(URLRULE,‘.html‘) === FALSE) $urlrule =APP_PATH.‘index.php?m=content&c=index&a=lists&catid={$catid}‘.$urlpars.‘&page={$page}‘ ;
        else $urlrule =APP_PATH.‘list-{$catid}‘.$urlpars.‘-{$page}.html‘;
        //根据get传值构造URL
        if (is_array($array)) foreach ($array as $_k=>$_v) {
            if($_k==‘page‘) $_v=1;
            if($type == 1) if($_k==$fieldname) continue;
            $_findme[] = ‘/{\$‘.$_k.‘}/‘;
            $_replaceme[] = $_v;
        }
     //type 模式的时候，构造排除该字段名称的正则
        if($type==1) $filter = ‘(?!‘.$fieldname.‘.)‘;
        $_findme[] = ‘/{\$‘.$filter.‘([a-z0-9_]+)}/‘;
        $_replaceme[] = ‘‘;
        $urlrule = preg_replace($_findme, $_replaceme, $urlrule);
        return         $urlrule;
}
/**
 * 生成分类信息中的筛选菜单
 * @param $field   字段名称
 * @param $modelid  模型ID
 */
function filters($field,$modelid,$diyarr = array()) {
    $fields = getcache(‘model_field_‘.$modelid,‘model‘);
    $options = empty($diyarr) ?  explode("\n",$fields[$field][‘options‘]) : $diyarr;
    $field_value = intval($_GET[$field]);
    foreach($options as $_k) {
        $v = explode("|",$_k);
        $k = trim($v[1]);
        $option[$k][‘name‘] = $v[0];
        $option[$k][‘value‘] = $k;
        $option[$k][‘url‘] = structure_filters_url($field,array($field=>$k),2,$modelid);
        $option[$k][‘menu‘] = $field_value == $k ? ‘<em>‘.$v[0].‘</em>‘ : ‘<a href=‘.$option[$k][‘url‘].‘>‘.$v[0].‘</a>‘ ;
    }
    $all[‘name‘] = ‘全部‘;
    $all[‘url‘] = structure_filters_url($field,array($field=>‘‘),2,$modelid);
    $all[‘menu‘] = $field_value == ‘‘ ? ‘<em>‘.$all[‘name‘].‘</em>‘ : ‘<a href=‘.$all[‘url‘].‘>‘.$all[‘name‘].‘</a>‘;

    array_unshift($option,$all);
    return $option;
}

/**
 * 获取联动菜单层级
 * @param  $keyid     联动菜单分类id
 * @param  $linkageid 菜单id
 * @param  $leveltype 获取类型 parentid 获取父级id child 获取时候有子栏目 arrchildid 获取子栏目数组
 */
function get_linkage_level($keyid,$linkageid,$leveltype = ‘parentid‘) {
    $child_arr = $childs = array();
    $leveltypes = array(‘parentid‘,‘child‘,‘arrchildid‘,‘arrchildinfo‘);
    $datas = getcache($keyid,‘linkage‘);
    $infos = $datas[‘data‘];
    if (in_array($leveltype, $leveltypes)) {
        if($leveltype == ‘arrchildinfo‘) {
            $child_arr = explode(‘,‘,$infos[$linkageid][‘arrchildid‘]);
            foreach ($child_arr as $r) {
                $childs[] = $infos[$r];
            }
            return $childs;
        } else {
            return $infos[$linkageid][$leveltype];
        }
    }    
}

// 根据linkageid递归到父级
function get_parent_url($modelid,$field,$linkageid=0,$array = array()){
    $modelid = intval($modelid);
    if(!$modelid || empty($field)) return false;
    $fields = getcache(‘model_field_‘.$modelid,‘model‘);
    $keyid = $fields[$field][‘linkageid‘];
    $datas = getcache($keyid,‘linkage‘);
    $infos = $datas[‘data‘];
                
    if(empty($linkageid)){
        $linkageid = intval($_GET[$field]);
        if(!$linkageid) return false;
    }
        
    $urlrule = structure_filters_url($field,array(),1,$modelid);
    $urlrule = str_replace(‘{$‘.$field.‘}‘,$infos[$linkageid][‘parentid‘],$urlrule);
    array_unshift($array,array(‘name‘=> $infos[$linkageid][‘name‘],‘url‘=>$urlrule));
    if($infos[$linkageid][‘parentid‘]){
        return get_parent_url($modelid,$field,$infos[$linkageid][‘parentid‘],$array);
    }
    return $array;
}
/**
 * 构造筛选时候的sql语句
 */
function structure_filters_sql($modelid) {
    $sql = $fieldname = $min = $max = ‘‘;
    $fieldvalue = array();
    $modelid = intval($modelid);
    $model =  getcache(‘model‘,‘commons‘);
    $fields = getcache(‘model_field_‘.$modelid,‘model‘);
    $fields_key = array_keys($fields);
    //TODO
    $sql = ‘`status` = \‘99\‘‘;
    foreach ($_GET as $k=>$r) {
        if(in_array($k,$fields_key) && intval($r)!=0 && ($fields[$k][‘filtertype‘] || $fields[$k][‘rangetype‘])) {
            if($fields[$k][‘formtype‘] == ‘linkage‘) {
                $datas = getcache($fields[$k][‘linkageid‘],‘linkage‘);
                $infos = $datas[‘data‘];
                if($infos[$r][‘arrchildid‘]) {
                    $sql .=  ‘ AND `‘.$k.‘` in(‘.$infos[$r][‘arrchildid‘].‘)‘;
                }
            } elseif($fields[$k][‘rangetype‘]) {
                if(is_numeric($r)) {
                    $sql .=" AND `$k` = ‘$r‘";
                } else {
                    $fieldvalue = explode(‘_‘,$r);
                    $min = intval($fieldvalue[0]);
                    $max = $fieldvalue[1] ? intval($fieldvalue[1]) : 999999;
                    $sql .=" AND `$k` >= ‘$min‘ AND  `$k` < ‘$max‘";
                }
            } else {
                $sql .=" AND `$k` = ‘$r‘";
            }
        }
    }
    return $sql;
}

/**
 * 分页，如去掉则分页会有问题
 */
function makeurlrule() {
    if(strpos(URLRULE,‘.html‘) === FALSE) {
        return url_par(‘page={$‘.‘page}‘);
    }
    else {
        $url = preg_replace(‘/-[0-9]+.html$/‘,‘-{$page}.html‘,get_url());
        return $url;
    }
}
?>