duandong2562 2017-09-08 09:19
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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;
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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
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