http://www.zend.com/manual/control-structures.foreach.php
/* foreach example 4: multi-dimensional arrays */
$a[0][0] = \"a\";
$a[0][1] = \"b\";
$a[1][0] = \"y\";
$a[1][1] = \"z\";
foreach ($a as $v1) {
foreach ($v1 as $v2) {
print \"$v2\\n\";
}
}