findreplace.php

<?php
// Search&Replace all occurrences of a given string
// Got tired of all the harship with sed -i so made this
// small script to get the same result.
$search = "Fn";
$replace = "Shared";

$rii = new RecursiveIteratorIterator(new RecursiveDirectoryIterator('.'));
foreach ($rii as $file) {
    if (in_array($file->getFilename(), [".", "..", "findreplace.php", ".git"])) continue; // Ignored files (in curdir)
    if (strpos($file->getPath(), ".git") !== false) continue; // Ignore everything in the .git dir
    if (strpos($file->getFilename(), ".php") === false) continue; // Only parse .php files
    
    $content = file_get_contents($file);
    if (strpos($content, $search) !== false) {
        var_dump($file);

        $content = str_replace($search, $replace, $content);
        file_put_contents($file, $content);
    }
}