I am familiar with pcre more then php's POSIX extension :) and it is said that preg_match() is faster than ereg(), see php manual for more info :)
function isValid($strData, $bIncludeAlpha=false, $bIncludeNumber=false) { switch(true) { case $bIncludeAlpha && !$bIncludeNumber: $ptr = "/^[a-zA-Z]+/"; break; case !$bIncludeAlpha && $bIncludeNumber: $ptr = "/^[0-9]+/"; break; case $bIncludeAlpha && $bIncludeNumber: $ptr = "/^[a-zA-Z0-9]+/"; break; default: return false; } return preg_match($ptr, $strData); } please add "default" statement:) ---- Ni Shurong <[EMAIL PROTECTED]> MAIL : [EMAIL PROTECTED] QQ : 412844 MSN : [EMAIL PROTECTED] BLOG : http://blog.njmars.com/myhan/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php