note 16310 added to function.is-numeric

Some examples. Note that leading white space is OK, but not trailing white space, and there can't be white space between the "-" and the number. is_numeric("1,000") = F is_numeric("1e2") = T is_numeric("-1e-2") = T is_numeric("1e2.3") = F is_numeric("1.") = T is_numeric("1.2") = T is_numeric("1.2.3") = F is_numeric("-1") = T is_numeric("- 1") = F is_numeric("--1") = F is_numeric("1-") = F is_numeric("1A") = F is_numeric(" 1") = T is_numeric("1 ") = F -- http://www.php.net/manual/en/function.is-numeric.php http://master.php.net/manage/user-notes.php?action=edit+16310 http://master.php.net/manage/user-notes.php?action=delete+16310 http://master.php.net/manage/user-notes.php?action=reject+16310