PHP:foreach循环次数过多

如果输入以下内容，则get_tag_id将两次返回第一个数组项：

纹理，客户端

我得到这份报税表：

Array
(
    [0] => texture
    [1] => clients
)
Array
(
    [0] => stdClass Object
        (
            [TagID] => 4
            [Title] => texture
        )

)
Array
(
    [0] => stdClass Object
        (
            [TagID] => 4
            [Title] => texture
        )

)
Array
(
    [0] => stdClass Object
        (
            [TagID] => 1
            [Title] => clients
        )

)
Array
(
    [0] => texture
    [1] => clients
)

代码如下：

        // Break up Tags and Store in an Array
        $delimiter = " ";
        $tags = explode($delimiter, $this->input->post('tags'));

        // Remove Accidential Spaces if any.
        $tags = array_filter($tags, function($var){
             return preg_match('/^[a-z-]+$/i', $var);
        });

        // Create Arrays for Seperation
        $newTags = array();
        $currentTags = array();
        print_r($tags);

        // Check if Tags Exists
        foreach ($tags as $tag) 
        {
            if (!$this->Bookmark_model->tag_exists($tag))
            {
                array_push($currentTags, strtolower($tag));
                // Get ID of tags that are existing
                foreach ($currentTags as $tagname) 
                {
                    $id = $this->Bookmark_model->get_tag_id($tagname);
                    echo $id;
                }
            }
            else
            {
                array_push($newTags, strtolower($tag));
            }
        }

获取标签id（）代码：

---

这是因为这里的代码：

            array_push($currentTags, strtolower($tag));
            // Get ID of tags that are existing
            foreach ($currentTags as $tagname) 
            {
                $id = $this->Bookmark_model->get_tag_id($tagname);
                echo $id;
            }

移除foreach，它将不再打印第一个数组两次

            array_push($currentTags, strtolower($tag));
            // Get ID of tags that are existing
            foreach ($currentTags as $tagname) 
            {
                $id = $this->Bookmark_model->get_tag_id($tagname);
                echo $id;
            }