How can foreach loops be effectively used to iterate through multidimensional arrays in PHP?

When iterating through multidimensional arrays in PHP using foreach loops, it is important to understand that nested foreach loops can be used to access each level of the array. By using a combination of foreach loops, you can effectively iterate through each element of the multidimensional array and perform operations as needed.

$multiArray = array(
    array(1, 2, 3),
    array(4, 5, 6),
    array(7, 8, 9)
);

foreach ($multiArray as $innerArray) {
    foreach ($innerArray as $value) {
        echo $value . " ";
    }
}