Find and replace in a file

by

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);

?>

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