Regular expressions are hell

programming
1

As with people who’ve experience regex’s for the first time, you know how difficult it is to comprehend.

I’m checking a form and I want to be sure a string is made ONLY out of lowercase letters (no number, spaces etc…)


	if(!preg_match('/[a-z]/',$form['username'])){
		$error = "Use lowercase letters only (a-z)";
	}

       // 'user name' is fine
       // '11111' returns the error
      //  'user name 3' is fine

I want it to return the error if there are spaces or digits/character out of the alphabet

Oh and I tried: /^[A-z]$/ it returns an error for everything

thanks for you help

mlk