Question

I want to replace certain strings with another one in a text file (ex: \nH with ,H). Is there any way to that using PHP?

Answer 1

You could read the entire file in with file_get_contents(), perform a str_replace(), and output it back with file_put_contents().

Sample code:

<?php

$path_to_file = 'path/to/the/file';
$file_contents = file_get_contents($path_to_file);
$file_contents = str_replace("\nH", ",H", $file_contents);
file_put_contents($path_to_file, $file_contents);

?>