<?php
$s = "Main Str. 202-52";
if (preg_match('~^(.*)\s(\d+)\W+(\d+)$~', $s, $m)) { echo $m[1] . "\n";
echo $m[2] . "\n";
echo $m[3];
}
PD9waHAKCiRzID0gIk1haW4gU3RyLiAyMDItNTIiOwppZiAocHJlZ19tYXRjaCgnfl4oLiopXHMoXGQrKVxXKyhcZCspJH4nLCAkcywgJG0pKSB7CgllY2hvICRtWzFdIC4gIlxuIjsKCWVjaG8gJG1bMl0gLiAiXG4iOwoJZWNobyAkbVszXTsKfQ==