Formatting Phone Numbers in PHP

Question

I am working on an SMS app and need to be able to convert the sender\'s phone number from +11234567890 to 123-456-7890 so it can be compared to re

Answer 1

It's faster than RegEx.

$input = "0987654321"; 

$output = substr($input, -10, -7) . "-" . substr($input, -7, -4) . "-" . substr($input, -4); 
echo $output;