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Warning: include(): Failed opening 'Validate/US.php' for inclusion (include_path='.:/usr/share/pear:/usr/share/php') in /opt/www/internett/php/PHP_Book/eksempler/ch09 - Strings and Regular Expressions/pear-validate_us.php on line 2

Fatal error: Uncaught Error: Class 'Validate_US' not found in /opt/www/internett/php/PHP_Book/eksempler/ch09 - Strings and Regular Expressions/pear-validate_us.php:3 Stack trace: #0 {main} thrown in /opt/www/internett/php/PHP_Book/eksempler/ch09 - Strings and Regular Expressions/pear-validate_us.php on line 3