I have a simple regex to remove undesired chars(like numbers for instance) from a string:
preg_replace(/[^a-z_]/, '', $str);
But now it must keep a prefix that contains some of those chars that were being removed. That prefix format consists of an alpha char followed by four numbers(prefix exemple:
b1234). String example:
So i tried to add a non-capturing group for that prefix, but i can’t make it to work. Attempted to use things like:
But it stops removing numeric chars in the whole string, for example.
Source: Ask PHP