Question

I am trying write a PHP regex to find numbers only that are exactly 3 digits long and start with a 6. So there should be no other symbols – just a 3-digit number. I know

^6

will validate if it leads with a 6 and the following will validate it is exactly 3 digits long

^\d{3}$

but I can’t find a way to combine these two expressions together into a single regex. Anyone know how I can combine the expressions? Thanks!

Answer 1

You are close :), now you just need to make 6 part of the expression and allow 2 digits after that 6:

^6\d{2}$

Should be what you are looking for