Remove eregi()

lib/validation.php

@@ -160,7 +160,7 @@ function validSID($SID,$override){
 		}
 	}
 	else{
-		if(!eregi("^[0-9]*$", $SID) || strlen($SID) != 6){
+		if(!preg_match("/^[0-9]*$/", $SID) || strlen($SID) != 6){
 			$error = "Invalid student ID";
 			return false;
 		}