php - 如何合并或简化多个语句

问题描述

我有重复的语句，需要帮助来简化或合并语句它们都有相似的值，范围从 1 月到 12 月，并且项目（在本示例中，销售额更改为不同的类别，销售额更改为 ncvat）更改了 32 个不同的类别，每个组都有一个不同的提交值

if(isset($_POST['submit1'])){
    $xml->sales->jan = $_POST['jan'];
    file_put_contents("2020/data.xml", $xml->asXML());
}

...................................
...................................

if(isset($_POST['submit1'])){
    $xml->sales->dec = $_POST['dec'];
    file_put_contents("2020/data.xml", $xml->asXML());
}

然后我有

if(isset($_POST['submit2'])){
        $xml->ncvat->jan = $_POST['jan'];
        file_put_contents("2020/data.xml", $xml->asXML());
    }
    
    ...................................
    ...................................
    
    if(isset($_POST['submit2'])){
        $xml->ncvat->dec = $_POST['dec'];
        file_put_contents("2020/data.xml", $xml->asXML());
    }

因此它进行了 32 种不同的表单提交动作

标签： phppostsubmitfile-put-contents

通常，当您有很多重复性任务时，循环是您的最佳选择。在这种情况下，我认为 2 个循环将解决您的问题。

//list of "categories". This also dictates how many outer-loops there will be. 
//Duplicates categories are allowed if needed.
$types = [
    'sales',
    'ncvat',
    //...etc
];

//list of months
$months = ['jan', 'feb', 'mar', 'apr', 'may', 'jun', 'jul', 'aug', 'sep', 'oct', 'nov', 'dec'];

//loop each `$types`, and use `$key + 1` as an indicator for which "submit value" you are processing
foreach($types as $key => $type)
    
    //to start $sub at `1` instead of `0`
    $submit_value = $key + 1; 

    //check if submit value exists for current loop (e.g $_POST['submit1'])
    if(isset($_POST["submit{$submit_value}"])) {

        //loop each month
        foreach($months as $month) {

            //update xml for current month in current submission loop
            $xml->{$type}->{$month} = $_POST[$month];
        }
    }
}

//submit all changes at once instead of overwriting on each inner-loop.
file_put_contents("2020/data.xml", $xml->asXML());

php - 如何合并或简化多个语句

问题描述

解决方案

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