Question

I would like to check that if $_POST[msg] contains a word that are longer than 30 chars(without no spaces) so you wouldnt be able to write:

example1 :

asdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsdsddsasdsdsdsdsd

example2:
hello my name is asdoksdosdkokosdkosdkodskodskodksosdkosdkokodsdskosdkosdkodkoskosdkosdkosdkosdsdksdoksd

(notice no spaces).

How can I do that?

Answer 1

You could use preg_match to look for that as follows…

if (preg_match('/\S{31,}/', $_POST['msg']))
{
     //string contains sequence of non-spaces > 30 chars
}

The /S matches any non-space character, and is the inverse of /s which matches any space. See the manual page on PCRE escape sequences