- substr: documentation ( source)
- strpos: documentation ( source)
- strrpos: documentation ( source)
<?php
$my_thing = "thisismy.image.jpg";
$last_dot = strrpos($my_thing, ".");
$ext = substr($my_thing, $last_dot);
$string = "MICROSOFT CORP CIK#: 0000789019 (see all company filings)";
$newString = substr($string, 0, strpos($string, " CIK#"));
echo $newString;