Question

As the title suggests I need a way to match more than one zero at the end of a number $.

100 //match
10 // no match
4000 // match
340 // no match
74003 //no match

I’m using php if that matters.

Attempts:
0+(?!(0))$
0[0-9]+$

Answer 1

$regex = "/0{2,}$/";
var_dump(preg_match($regex, "4000"));

php> $regex = "/0{2,}$/"

php> preg_match($regex, "100")

php> echo preg_match($regex, "100")
1
php> echo preg_match($regex, "10")
0
php> echo preg_match($regex, "4000")
1
php> echo preg_match($regex, "340")
0
php> echo preg_match($regex, "74003")
0
php>