CPT UI分类法多bullhorn_id筛选失效问题求助

现有通过slug筛选职位的链接可正常工作，例如：

mydomain.com/filter/?technology=angular&category=software-development

需要实现多个bullhorn_id值的筛选，尝试了两种方式均无效：

• 逗号分隔参数：

mydomain.com/filter/?bullhorn_id=2979,2090

• 重复参数名：

https://itds.pl/filter/?bullhorn_id=2979&bullhorn_id=2903

单个bullhorn_id参数可正常筛选，多值时失效。

现有相关代码 #

生成筛选链接的部分代码：

if(isset($_GET['bullhorn_id'])){
    $bullhorn = explode(',',$_GET['bullhorn_id']);
    if(count($bullhorn)>=0){                                
        for($p=0;$p<count($bullhorn);$p++){                                  
            $filter[] = array( 'taxonomy' => 'bullhorn_id', 'field' => 'slug', 'terms' => $bullhorn[$p]  );
        } 
    }
    else{
        $filter[] = array( 'taxonomy' => 'bullhorn_id', 'field' => 'slug', 'terms' => $_GET['bullhorn_id']  );
    }
}

查询函数中的相关代码：

// Filter for search query
if(isset($_REQUEST['input_keyword']) && $_REQUEST['input_keyword']!=''){
    $arg['s'] = $_REQUEST['input_keyword'];
}

// Set meta query with argument
if(isset($_REQUEST['location']) && $_REQUEST['location']!=''){
    $filter[] = array (
            'taxonomy' => 'location',
            'field' => 'slug',
            'terms' => $_REQUEST['location']
        );
}
if(isset($_REQUEST['technology']) && $_REQUEST['technology']!=''){
    $filter[] = array (
            'taxonomy' => 'technology',
            'field' => 'slug',
            'terms' => $_REQUEST['technology']
        );
}
if(isset($_REQUEST['product_category']) && $_REQUEST['product_category']!=''){
    $filter[] = array (
            'taxonomy' => 'product_cat',
            'field' => 'slug',
            'terms' => $_REQUEST['product_category']
        );
}
if(isset($_REQUEST['employment_type']) && $_REQUEST['employment_type']!=''){
    $filter[] = array (
            'taxonomy' => 'employment_type',
            'field' => 'slug',
            'terms' => $_REQUEST['employment_type']
        );
}
if(isset($_REQUEST['seniority']) && $_REQUEST['seniority']!=''){
    $filter[] = array (
            'taxonomy' => 'seniority',
            'field' => 'slug',
            'terms' => $_REQUEST['seniority']
        );
}
if(isset($_REQUEST['type_of_work']) && $_REQUEST['type_of_work']!=''){
    $filter[] = array (
            'taxonomy' => 'type_of_work',
            'field' => 'slug',
            'terms' => $_REQUEST['type_of_work']
        );
}
if(isset($_REQUEST['language']) && $_REQUEST['language']!=''){
    $filter[] = array (
            'taxonomy' => 'language',
            'field' => 'slug',
            'terms' => $_REQUEST['language']
        );
}
if(isset($_REQUEST['skills']) && $_REQUEST['skills']!=''){
    $filter[] = array (
            'taxonomy' => 'skills',
            'field' => 'slug',
            'terms' => $_REQUEST['skills']
        );
}
if(isset($_REQUEST['bullhorn_id']) && $_REQUEST['bullhorn_id']!=''){
    $filter[] = array (
            'taxonomy' => 'bullhorn_id',
            'field' => 'slug',
            'terms' => $_REQUEST['bullhorn_id']
        );
}
if(isset($_REQUEST['hot_offer']) && $_REQUEST['hot_offer']!=''){
    $filter[] = array (
            'taxonomy' => 'hot_offer',
            'field' => 'slug',
            'terms' => $_REQUEST['hot_offer']
        );
}
if( !empty($filter) && count($filter)>1 ){
    $arg['tax_query'] = $filter;   
}
     

if(isset($_REQUEST['max_price']) && $_REQUEST['max_price']!=''){
    

         $filtermeta[] = array(
            'key' => 'maximum_price',
            'value' => array(trim($_REQUEST['max_price']), 1000000),
            'compare' => 'BETWEEN',
            'type' => 'numeric'
        );      
}

if( !empty($filtermeta) && count($filtermeta)>1 ){
    $arg['meta_query'] = $filtermeta;   
}

问题原因及解决方案 #

核心问题：

1. 代码存在重复处理bullhorn_id的逻辑：生成筛选链接的代码尝试拆分逗号参数，但查询函数又单独从$_REQUEST['bullhorn_id']取值添加筛选条件，导致逻辑冲突。
2. 逗号分隔参数时，查询函数直接把整个字符串作为terms值而非数组；重复参数名时，PHP仅保留最后一个参数值。
3. 原代码仅当count($filter)>1时才赋值tax_query，若仅筛选bullhorn_id多值，会因count($filter)=1导致筛选不生效。

修复步骤：

1. 删除重复的bullhorn_id处理逻辑

删掉查询函数中这段单独处理bullhorn_id的代码：

if(isset($_REQUEST['bullhorn_id']) && $_REQUEST['bullhorn_id']!=''){
    $filter[] = array (
            'taxonomy' => 'bullhorn_id',
            'field' => 'slug',
            'terms' => $_REQUEST['bullhorn_id']
        );
}

2. 优化bullhorn_id参数处理逻辑

替换生成筛选链接的代码，兼容逗号分隔和数组参数两种传递方式：

if(isset($_REQUEST['bullhorn_id'])){
    // 处理数组格式参数（链接需写为bullhorn_id[]=xxx&bullhorn_id[]=xxx）
    if(is_array($_REQUEST['bullhorn_id'])){
        $bullhorn_ids = $_REQUEST['bullhorn_id'];
    } else {
        // 处理逗号分隔参数，过滤空值
        $bullhorn_ids = array_filter(explode(',', $_REQUEST['bullhorn_id']));
    }
    
    if(!empty($bullhorn_ids)){
        // 直接传递数组作为terms，无需循环添加多个筛选条件
        $filter[] = array(
            'taxonomy' => 'bullhorn_id',
            'field' => 'slug',
            'terms' => $bullhorn_ids,
            'operator' => 'IN' // 显式指定IN操作符，默认值为IN，写清更直观
        );
    }
}

3. 修复tax_query赋值逻辑

将原代码中count($filter)>1的判断改为只要$filter非空就赋值：

if(!empty($filter)){
    $arg['tax_query'] = $filter;
}

4. 对应调整前端请求链接

• 逗号分隔格式：mydomain.com/filter/?bullhorn_id=2979,2090
• 数组参数格式（更规范）：mydomain.com/filter/?bullhorn_id[]=2979&bullhorn_id[]=2903

内容的提问来源于stack exchange，提问作者Tanya Nami