Change a string inside my PHP code sample

Question

I have asked a question in this post

but it might look some confusing and I found no relative response, so I make it quiet simple.

The code is:

<?php
$newTitle = 'string retrieved from somewhere';
fwrite($newFile, "<title>oldTitle</title>\n");
?>

I want to replace oldTitle with $newTitle

I have tried this:

$myTitle = preg_replace('/(<title>)(.*?)(<\/title>)', $newtitle, $myTitle);

Thanks

Answer 1

fwrite($newFile, "<title>{$newTitle}</title>\n");