[ticket/10042] Add mt_rand() wrapper which allows swapping $min and $max.

PHPBB3-10042

phpBB/includes/functions.php

@@ -244,6 +244,22 @@ function unique_id($extra = 'c')
 	return substr($val, 4, 16);
 }
 
+/**
+* Wrapper for mt_rand() which allows swapping $min and $max parameters.
+*
+* PHP does not allow us to swap the order of the arguments for mt_rand() anymore.
+* (since PHP 5.3.4, see http://bugs.php.net/46587)
+*
+* @param int $min		Lowest value to be returned
+* @param int $max		Highest value to be returned
+*
+* @return int			Random integer between $min and $max (or $max and $min)
+*/
+function phpbb_mt_rand($min, $max)
+{
+	return ($min > $max) ? mt_rand($max, $min) : mt_rand($min, $max);
+}
+
 /**
 * Return formatted string for filesizes
 *