Question

I have a little problem with regex. I want to clean up a string.

Currently I’m using the following regex:

preg_replace("/[^a-zA-Z0-9 _-]/", "", "Example1:2@32");

which gives me: “Example1232”

But the colon shouldn’t be replaced, too. I tried it already with:

preg_replace("/[^a-zA-Z0-9 _-:]/", "", "Example1:2@32");

but that doesn’t work. Can somebody help me?

Answer 1

You have to escape - character

preg_replace("/[^a-zA-Z0-9 _\-:]/", "", "Example1:2@32"));