note 69737 added to function.ctype-alnum

Be careful of the type of the parameter you pass to this, as it can have strange results... <?php // integers ctype_alnum(1); // false ctype_alnum(0); // false ctype_alnum(-1); // true // strings ctype_alnum("1"); // true ctype_alnum("0"); // true ctype_alnum("-1"); // false ?> Using PHP 4.3.11 on Windows/Apache ---- Server IP: 203.16.234.20 Probable Submitter: 60.231.148.77 ---- Manual Page -- http://www.php.net/manual/en/function.ctype-alnum.php Edit -- https://master.php.net/note/edit/69737 Del: integrated -- https://master.php.net/note/delete/69737/integrated Del: useless -- https://master.php.net/note/delete/69737/useless Del: bad code -- https://master.php.net/note/delete/69737/bad+code Del: spam -- https://master.php.net/note/delete/69737/spam Del: non-english -- https://master.php.net/note/delete/69737/non-english Del: in docs -- https://master.php.net/note/delete/69737/in+docs Del: other reasons-- https://master.php.net/note/delete/69737 Reject -- https://master.php.net/note/reject/69737 Search -- https://master.php.net/manage/user-notes.php