Question

我正在开发一个插件。我在＆＃34; register_activation_hook＆＃34;上查询。当我激活插件时，查询工作完美，但我收到错误

插件在激活期间生成了1个意外输出字符。如果您发现“已发送标头”消息，联合供稿问题或其他问题，请尝试停用或删除此插件。

问题是什么？我不明白。

这是我的代码：

function customtaxorder_init() {
    global $wpdb;
    $init_query = $wpdb->query("SHOW COLUMNS FROM $wpdb->terms LIKE 'term_order'");
    if ($init_query == 0) { $wpdb->query("ALTER TABLE $wpdb->terms ADD `term_order` INT( 4 ) NULL DEFAULT '0'"); }

    //  For Previous Users Product Images
    $prefix = $wpdb->prefix;
    $postSql = "SELECT DISTINCT post_id
                    FROM ".$prefix."postmeta As meta
                    Inner Join ".$prefix."posts As post
                    On post.ID = meta.post_id
                    Where post_type = 'wpcproduct' 
                    And post_status = 'publish'
                    And meta_key Like '%product_img%'";
    $postQry = mysql_query($postSql);
    while($postRow = mysql_fetch_array($postQry)){
        $post_id = $postRow['post_id'];
        $meta_key = "product_images";

        $sql = "Select post.*, meta.*
                        From ".$prefix."posts As post
                        Inner Join ".$prefix."postmeta As meta
                        On post.ID = meta.post_id
                        Where post_type = 'wpcproduct' 
                        And post_status = 'publish'
                        And meta_key Like '%product_img%'
                        And post_id = ".$post_id;
        $qry = mysql_query($sql);
        $prod_key = array();
        $prod_value = array();
        $a = 0;
        while($row = mysql_fetch_array($qry)){
            $product_img = $row['meta_key'];

            $product_img = preg_replace("([0-9]+)", "", $product_img);

            $response[$a] = $row['meta_key'];
            $response[$a] = $row['meta_value'];

            $data[$a][$product_img] = $response[$a];

            $a = $a + 1;
        }
                //print_r($data);
        $data_serialize = serialize($data);

        $insert_images = "Insert Into ".$prefix."postmeta(post_id,meta_key,meta_value) Value('$post_id','$meta_key','$data_serialize')";
        mysql_query($insert_images);
    }

    //  Delete All product_img1,product_img2,product_img3
    mysql_query("Delete From ".$prefix."postmeta Where meta_key IN ('product_img1','product_img2','product_img3')");

    //  Update All product_price to Product Price
    $support_sql = "Select * From ".$prefix."postmeta Where meta_key Like '%product_price%'";
    $support_qry = mysql_query($support_sql);
    while($support_arr = mysql_fetch_array($support_qry)){
        $supportMetaID = $support_arr['post_id'];
        $supportMetaPrice = $support_arr['meta_key'];

        $price_split = explode("_", $supportMetaPrice);

        $supportMetaPrice = $price_split[0]." ".$price_split[1];

        $supportMetaPrice = ucwords($supportMetaPrice);

        $update_price = "Update ".$prefix."postmeta
                                Set meta_key = '$supportMetaPrice'
                                Where post_id = $supportMetaID
                                And meta_key Like '%product_price%'";
        mysql_query($update_price);
    }
}
register_activation_hook(__FILE__, 'customtaxorder_init');

有什么想法吗？

Answer 1

如果您使用的是Dreamweaver，则可以选择＆＃34;应用源格式＆＃34;在控制菜单下，尝试它，它将删除不需要的空格。

还要确保在＆gt;之后没有任何额外的空格或换行符（页面末尾的php结束标记..）

Answer 2

1）请删除内页或插件页面中的额外间距。

2）删除页面或插件页面中的内联样式。

每次都为我工作。我使用了很多次相同的方法。当插件页面或Wordpress页面出现问题时。

此致

Hitesh Nagpal

Answer 3

禁用错误报告，即define('WP_DEBUG', false);它对我有用

错误消息 - 插件在wordpress中激活期间生成了1个字符的意外输出

3 个答案: