duandong2562 2017-09-08 09:19
浏览 253
已采纳

从函数外部调用变量

How can I call $attach_id from outside of a function?

function kv_handle_attachment($file_handler, $post_id, $set_thu = false) {
    // check to make sure its a successful upload
    if ($_FILES[$file_handler]['error'] !== UPLOAD_ERR_OK)
        __return_false();

    require_once(ABSPATH . "wp-admin" . '/includes/image.php');
    require_once(ABSPATH . "wp-admin" . '/includes/file.php');
    require_once(ABSPATH . "wp-admin" . '/includes/media.php');

    $attach_id = media_handle_upload($file_handler, $post_id);
    return $attach_id;
}

echo $attach_id;
  • 写回答

2条回答 默认 最新

  • doujiu8145 2017-09-08 09:23
    关注

    when you get value from function then you need to call this function this is your code, this is demo code which return 12

    <?php
    function kv_handle_attachment($file_handler, $post_id)
    {
        return 12;
    }
    
    $attach_id = kv_handle_attachment('1', 12);
    echo $attach_id;
    

    so update your code like this

    <?php
    function kv_handle_attachment($file_handler, $post_id, $set_thu = false)
    {
        // check to make sure its a successful upload
        if ($_FILES[$file_handler]['error'] !== UPLOAD_ERR_OK) __return_false();
    
        require_once(ABSPATH . "wp-admin" . '/includes/image.php');
        require_once(ABSPATH . "wp-admin" . '/includes/file.php');
        require_once(ABSPATH . "wp-admin" . '/includes/media.php');
    
        $attach_id = media_handle_upload($file_handler, $post_id);
        return $attach_id;
    }
    

    so call your function

    $attach_id = kv_handle_attachment($file_handler, $post_id);
    

    or this is more clear option

    $attach_id = kv_handle_attachment($yourdatahere); //$yourdatahere update as your parameter which you need to send but your first 2 parameter is required so need to send this must but not empty 
    echo $attach_id; 
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
查看更多回答(1条)

报告相同问题?

悬赏问题

  • ¥15 file converter 转换格式失败 报错 Error marking filters as finished,如何解决?
  • ¥15 ubuntu系统下挂载磁盘上执行./提示权限不够
  • ¥15 Arcgis相交分析无法绘制一个或多个图形
  • ¥15 关于#r语言#的问题:差异分析前数据准备,报错Error in data[, sampleName1] : subscript out of bounds请问怎么解决呀以下是全部代码:
  • ¥15 seatunnel-web使用SQL组件时候后台报错,无法找到表格
  • ¥15 fpga自动售货机数码管(相关搜索:数字时钟)
  • ¥15 用前端向数据库插入数据,通过debug发现数据能走到后端,但是放行之后就会提示错误
  • ¥30 3天&7天&&15天&销量如何统计同一行
  • ¥30 帮我写一段可以读取LD2450数据并计算距离的Arduino代码
  • ¥15 飞机曲面部件如机翼,壁板等具体的孔位模型