how to write php code to a file with php

Question

For part of my website I need to be able to write php code to a file with php. For example:

$filename = \"RtestR.php\";
$ourFileName =$filename;
$ourFileHand         


        

Answer 1

$fp = fopen("test.php", "w");
$string = '
    
    
    
    ';

fwrite($fp, $string);

fclose($fp);