正则表达式PCRE：验证不包含3个或更多连续数字的字符串

Question

I've searched the questions but can't find an answer. I need a pattern that, used with php preg_match function, only match strings that does not contains 3 or more consecutive digits, e.g.:

rrfefzef        => TRUE
rrfef12ze1      => TRUE
rrfef1zef1      => TRUE
rrf12efzef231   => FALSE
rrf2341efzef231 => FALSE

So far, I have wrote the following regex:

@^\D*(\d{0,2})?\D*$@

it only match the strings that have only one occurrence of \d{0,2}

If someone else has time to help me with this, I would appreciate it :)

Regards,

Answer 1

/^(.(?!\d\d\d))+$/

Matches all characters that are not followed by three digits. Example.