Re: replace n first occurences of a char in a string

Then, once I have determined there are more than one dot, how can I remove all the dots but the right most one?

You can replace a limited number of matches using preg_replace(). <?php $number = '123.456.789.10'; $count = substr_count($number, '.'); $number = preg_replace('/\./', '', $number, $count - 1); echo $number; ?>

so 123.456.789.01 would become 123456789.01 with just the dot before the zero. Thanks in advance.