PHP regular expression, cannot end with ABC or XYZ

PHP regular expression, cannot end with string ABC or XYZ
If it is a single, cannot end with the string ABC should be: ([^abc]$/i) right?

Reply content:

PHP regular expression, cannot end with string ABC or XYZ
If it is a single, cannot end with the string ABC should be: ([^abc]$/i) right?

/^(?!.*abc$)(?!.*xyz$)/

[]This structure means that the elements inside are each small branch.
So what the Lord says
[^abc]$/iis not strict,
Like what

/[^abc]$/i.test("xxxab"); //false 实际上你希望得到true

/.*?[^(abc|xyz)]$/i

