how can i find multiple occurrence of the same character? something like:
$maxRepeat = 3;
"pool" passes
"poool" don't
i need this to work for any character, so i guess I'll have to escape special characters like . and \
which characters i have to escape?
do you know any good reference to preg_match regexp apart from the one on php.net?
You use quantifiers for this
preg_match("/p(o){1,3}ls/",$string);
Excerpt:
The following standard quantifiers are recognized:
1. * Match 0 or more times
2. + Match 1 or more times
3. ? Match 1 or 0 times
4. {n} Match exactly n times
5. {n,} Match at least n times
6. {n,m} Match at least n but not more than m times
My favorite resource for learning Perl Regular Expressions is the time honored camel book. But if you don't have one handy, this site is pretty good.
/.{1,2}/ # 2 is limit, 1 to have at least one character
any character repeated up to so many times, you'll have to format your regex if your $amxRepeate is an int.
found, what i need is
if(preg_match('/(.)\1/', $t)) return true;
this returns true for $t = 'aa'; // any char
if(preg_match('/(.)\1\1/', $t)) return true;
this returns true for $t = 'aaa'; // any char
and so on