在工作中，我们编写了一个PHP应用程序。我只是一名大三学生，但我对处理AJAX调用的问题感到不满。每个AJAX请求都指向单个appdata。php脚本。在appdata。php是这种结构的15k行$_POST[\'variable\']”；“变量”；每次都不一样

if(isset($_POST[\'variable_1\'])){
            // redirect to handling function       
            $returnArray[\'return\'] = $model->DoSomeStuffWithVariable_1();
            // returnArray returns data after dosomething at backend
        }
if(isset($_POST[\'variable_2\'])){
            // redirect to handling function       
            $returnArray[\'return\'] = $model->DoSomeStuffWithVariable_2();
            // returnArray returns data after dosomething at backend
        }
if(isset($_POST[\'variable_3\'])){
            // redirect to handling function       
            $returnArray[\'return\'] = $model->DoSomeStuffWithVariable_3();
            // returnArray returns data after dosomething at backend
        }
if(isset($_POST[\'variable_xy\'])){
            // redirect to handling function       
            $returnArray[\'return\'] = $model->DoSomeStuffWithVariable_xy();
            // returnArray returns data after dosomething at backend
        }

我想问一下如何才能做得更好。以及它是如何在专业的范围内完成的，就像在商业网站上一样，在商业网站上，使用数百个变量进行的AJAX调用要多出数百倍。。。

$conditions = [
    \'variable_1\'  => \'DoSomeStuffWithVariable_1\',
    \'variable_1\'  => \'DoSomeStuffWithVariable_1\',
    \'variable_1\'  => \'DoSomeStuffWithVariable_1\',
    \'variable_xy\' => \'DoSomeStuffWithVariable_xy\'
];

foreach ($conditions as $condition_key => $condition_value) {
    if (isset($_POST[$condition_key])) {
        $returnArray[\'return\'] = $model->$condition_value();
        break;
    }
}