<!-- Collection of code snippets by Arne Vajhøj -->
<!-- posted to eksperten.dk, usenet and other places (2002-now) -->
<?php
header("Content-Type: text/plain");
$con = mysql_connect("localhost", "root", "") or die(mysql_error());
$rs = mysql_query("SHOW DATABASES") or die(mysql_error());
while ($row = mysql_fetch_array($rs)) {
    print "mysqldump " . $row["0"] . " > " . $row["0"] . ".sql\n";
}
mysql_free_result($rs);
mysql_close($con);
?>