The sql() source code contd.

$random = time();

set a variable to the time

$rand = substr($random,length($random)-8,8);

set a variable to a piece of the time

while ( -e "/var/tmp/$rand.sql" ) { $rand = $rand - 600; }

check for a file with the same name

$sql_file = "/var/tmp/".$rand.".sql";

define a temporary file to hold the SQL code