search and replace, recalculate string-length in serialized array

gistfile1.php

<?php
$in = file_get_contents('input.sql');

// change domain(s)
$in = preg_replace('/old.example.com/', 'new.example.com', $in);
$in = preg_replace('/older.example.com/', 'newer.example.com', $in);

// recalculate string lengths in serialized arrays
$out = preg_replace('/s:(\d+):\\\"(.*?)\\\";/e', "'s:'.strlen('$2').':\"$2\";'", $in);

file_put_contents('output.sql', $out);