如何将数据从php from发送到R脚本，以便基于该数据执行某些操作？

我已经使用PHP构建了一个表单，其中包含一些问题，每当用户单击submit按钮时，生成的CSV就会传递给R脚本进行预测。正在生成CSV，但未将其传递到R脚本，请提供帮助

我已尝试使用exec（）；但它似乎不起作用，或者我做错了

<?php
    if(isset($_POST['submit'])){

    //collect form data
   $Pleasure=$_POST['Pleasure'];
    $Feeling=$_POST['Feeling'];
f(!isset($error)){

        # Title of the CSV
        $Content = "PleasureDoing,Feeling\n";


        //set the data of the CSV
        $Content .= "$Pleasure,$Feeling";

        # set the file name and create CSV file
        $FileName = "formdata-".date("d-m-y-h:i:s").".csv";
        header('Content-Type: application/csv'); 
        header('Content-Disposition: attachment; filename="' . $FileName . '"'); 
        echo $Content;
        exec('C:\\"Program Files"\\R\\R-3.5.1\\bin\\Rscript.exe C:\xampp\htdocs\predict\Rscript.R ');
        exit();
    }
}

//if their are errors display them
if(isset($error)){
    foreach($error as $error){
        echo "<p style='color:#ff0000'>$error</p>";
    }
}
?> 

<form action='' method='post'>

<h2>Little interest or pleasure in doing things</h2>
  <input type="radio" name="Pleasure" value=" Not at all"> Not at all<br>
  <input type="radio" name="Pleasure" value="Sometimes">Sometimes<br>
  <input type="radio" name="Pleasure" value="Several days">Several days<br>
  <input type="radio" name="Pleasure" value="More than half the days">More than half the days<br>
  <input type="radio" name="Pleasure" value="Nearly everyday">Nearly everyday<br>

  <h2>Feeling down, depressed, or hopeless</h2>
  <input type="radio" name="Feeling" value=" Not at all"> Not at all<br>
  <input type="radio" name="Feeling" value="Sometimes">Sometimes<br>
  <input type="radio" name="Feeling" value="Several days">Several days<br>
  <input type="radio" name="Feeling" value="More than half the days">More than half the days<br>
  <input type="radio" name="Feeling" value="Nearly everyday">Nearly everyday<br>

<p><input type='submit' name='submit' value='Submit'></p> 
</form>

SO rather then the code to generate the csv i want the code to send the data to the R scrip, how should i proceed or do it ?

PHP创建一个数据文件
R读取文件
PHP创建一个数据文件
R读取文件
是，PHP将生成本应发送到R脚本的CSV，但脚本仅生成CSV，而不重定向它并执行R脚本：`df_main是，PHP将生成本应发送到R脚本的CSV，但脚本仅生成CSV，而不重定向它并执行R脚本脚本：：`df_main