Can't escape characters in php??

Hello, I'm running Apache/1.3.26 and PHP 4.0.5 on WinXP pro. The following code is taken from the book mastering PHP 4.1 and is supposed to work: if (ereg([^0-9], "2002-11-14")) print "That's not a number!"; It won't work for me. I get a parse error expecting a ')'. I have also tried other regular expressions, but almost all of them fails. One that works: if (ereg("....-..-..", "2002-11-14")) Also '\n' in an echo-expression won't work. It is ignored. code: echo "HELLO \n"; echo "WORLD"; result: HELLO WORLD What can be wrong? Do I miss a library or something?? Thanks, Lars