note 22069 added to ref.strings

One could make an ever quicker isalphanumeric() function by using regular expressions: function isalphanumeric($test) { return !(preg_match("/[^a-z,A-Z,0-9 ]/", $test)); } Note: that is a space after the 9, in order to inclue spaces in the comparison. One could also add \t and \n so that it did not fail out if it found a tab or newline. This is much cleaner and more efficient than the array approach described earlier, and nicer than the ordinal characters approach as well. -- http://www.php.net/manual/en/ref.strings.php http://master.php.net/manage/user-notes.php?action=edit+22069 http://master.php.net/manage/user-notes.php?action=delete+22069 http://master.php.net/manage/user-notes.php?action=reject+22069