Question

我正在尝试构建一个表单，用户从字符串输入数据，表单将根据输入通过json src获取数据子集，并创建一个多维数组并将其保存在数据库中。如果输入先前已添加到数据库，我不希望它再次附加到数组中。

以下是我的代码的外观：

//SET UP the Array
$thisquery_themes[] = array(
    strtolower($themename) => array(
        "author"=>$data['Author'],
        "desc"=>$data['Description'],
        "screenshot"=> $screenshot,
        "link"=> $data['URI'],
        "count"=> 1
    )
);

//Get Previously saved data
$existing_themes = get_option('top_themes');

if(!empty($existing_themes)){
    foreach ($existing_themes as $group){
        foreach(array_keys($group) as $key) {
            if($group[strtolower($themename)] == strtolower($themename)){
                unset($group[$key][strtolower($themename)]);
            }
        }
    }

    $total_themes= array_merge($existing_themes , $thisquery_themes);
    update_option('top_themes', $total_themes);
} else {
    update_option('top_themes', $thisquery_themes);
}

不是。如果密钥存在于数组中，则数据仍在数组中添加：

Array ( 
[0] => Array ( 
        [towfiq-i._v5] => Array ( 
           [author] => Towfiq I. 
           [desc] => Towfiq I. official website. 
           [count] => 1 
        ) 
) 
[1] => Array ( 
        [towfiq-i._v5] => Array ( 
           [author] => Towfiq I. 
           [desc] => Towfiq I. official website. 
           [count] => 1 
        ) 
) 
[2] => Array ( 
        [wp-bangla] => Array ( 
           [author] => Ifty Rahman 
           [desc] => A website template for wpbangla
           [count] => 1 
        ) 
) 
[3] => Array ( 
        [towfiq-i._v5] => Array ( 
           [author] => Towfiq I. 
           [desc] => Towfiq I. official website. 
           [count] => 1 
        ) 
)
[4] => Array ( 
        [wp-bangla] => Array ( 
           [author] => Ifty Rahman 
           [desc] => A website template for wpbangla 
           [count] => 1 
        ) 
)

但我希望它是这样的（注意“count”字段值是如何加起来的。让我知道它是否可能）：

Array ( 
[0] => Array ( 
        [towfiq-i._v5] => Array ( 
           [author] => Towfiq I. 
           [desc] => Towfiq I. official website. 
           [count] => 3 
        ) 
) 

[1] => Array ( 
        [wp-bangla] => Array ( 
           [author] => Ifty Rahman 
           [desc] => A website template for wpbangla 
           [count] => 2 
        ) 
)

非常感谢任何帮助。感谢

Answer 1

如果只使用一个值，为什么在数组中使用数组呢？除非那是你的结果，否则你的结构很容易看起来像：

Array ( 
        [towfiq-i._v5] => Array ( 
           [author] => Towfiq I. 
           [desc] => Towfiq I. official website. 
           [count] => 3 
        ) 
        [wp-bangla] => Array ( 
           [author] => Ifty Rahman 
           [desc] => A website template for wpbangla 
           [count] => 2 
        ) 
)

然后你的世界将变得更加容易，因为你可以使用isset($existing_themes[strtolower($themename)])来检查数组元素是否存在（作为一个例子。）

如果您无法更改收到$existing_themes的方式，可以重新格式化以下数据：

$existing_themes_mod = array();
foreach ($existing_themes as $t) {
    $existing_themes_mod[key($t)] = reset($t);
}

这应该为您提供足够的策略，以便能够对现有条目而不是附件运行“更新”。如果你需要帮助写作，请先告诉我你的尝试。

编辑 - 感谢您粘贴代码。顺便说一下，你应该留意所有的空白......这是实现目标的更好方法

if (!empty($existing_themes)) {
    if (isset($existing_themes[strtolower($themename)])) {
        if (isset($existing_themes[strtolower($themename)]['count'])) {
            $existing_themes[strtolower($themename)]['count'] = $existing_themes[strtolower($themename)]['count'] + 1;
        } else {
            $existing_themes[strtolower($themename)]['count'] = 1;
        }                                              
        $thisquery_themes = array();
    }                               
    $total_themes= array_merge($existing_themes , $thisquery_themes);
    update_option('top_themes', $total_themes);                       
} else {
    update_option('top_themes', $thisquery_themes);
}

您尝试不起作用的原因是当您尝试通过将{1}}递增1来更改$value时，它不会修改原始数组。当您像这样使用foreach时，您需要通过引用进行迭代，否则您无法修改该值。你为自己做了太多的工作！

如果密钥存在，则替换多维数组中的数组

1 个答案: