now we will use nested foreach loop to display the data from the given two multidimensional array.

See Example

<?php
$students = [
'student1' => ['name' => 'Rahul', 'age'=>21, 'class'=> 9],
'student2' => ['name' => 'Gargi', 'age'=>25, 'class'=> 10],
'student3' => ['name' => 'Jyoti', 'age'=>19, 'class'=> 12],
];
foreach($students as $key => $student)
{
echo 'data of '.$key.'<br>';
/*here $student is an array */
foreach($student as $key2 => $value)
{
echo $key2.' : '.$value.'<br>';
}
}
?>

Output

data of student1
name : Rahul
age : 21
class : 9
data of student2
name : Gargi
age : 25
class : 10
data of student3
name : Jyoti
age : 19
class : 12

So in this way we do traversal using Multidimensional Array foreach loop in PHP, although it is not necessary that you use foreach loop only, you can also use for loop.

PHP Traversing Multidimensional Array Using for loop

To traverse through a for loop, we will take the example of Two Multidimensional Indexed Array, although you can also traversal the Associative Array through a foreach loop but then we have to extract the array keys.

Example–

<?php
$students = [
['Rahul',25,9],
['Gargi',28,10],
['Jyoti',19,12],
];
$size = count($students);
for($s=0; $s<$size; $s++)
{ 
echo 'data of studnet'.($s+1).'<br>';
/*now get inner array size */
$in_size = count($students[$s]);
for($i=0; $i<$in_size; $i++)
{
echo $students[$s][$i].'<br>';
}
}
?>

Output

data of studnet1
Rahul
25
9
data of studnet2
Gargi
28
10
data of studnet3
Jyoti
19
12