Multi-dimensional arrays is a type of arrays which stores an another array at each index instead of single element. In simple words, multi-dimensional arrays as array of arrays, every element in this array can be an array and they can also hold other sub-arrays within. Arrays or sub-arrays in multidimensional arrays can be accessed using multiple dimensions.
Dimensions of multidimensional array indicates the number of indices needed to select an element. For a two dimensional array two indices to select an element.

Associative array: Al associative array is similar to indexed array but instead of linear storage (indexed storage), every value can be assigned with a user-defined key of string type. Example :-

Output :-

Array
(
    [new1] => manishkumar
    [new2] => amitkumar
    [new3] => 19
    [new5] => 90
    [new6] => 1
    [new7] => 
    [new8] => 
)

19
90
1

Multidimensional Array : It is the form of multidimensional array. Initialization in Three-Dimensional array is same as that of Two-dimensional arrays. The difference is as the number of dimension increases so the number of nested braces will also increase.

Accessing multidimensional array elements: There are mainly two ways to access multidimensional array elements in PHP.

• Elements can be accessed using dimensions as array_name[‘first dimension’][‘second dimension’].
• Elements can be accessed using for loop.
• Elements can be accessed using for each loop.

Output:-

1 Mukesh Manager Digital Marketing 50000
2 Nitesh Asst Manager Software Develoer 35000
3 Nilotma Senior Manager Tech team 76000
4 ritesh Junior Manager SEO 15000
5 Rakesh Area Manager Sales Marketing 40000

---

Emp Id	Emp Name	Emp Designation	Emp Department	Emp Salary
1	Mukesh	Manager	Digital Marketing	50000
2	Nitesh	Asst Manager	Software Develoer	35000
3	Nilotma	Senior Manager	Tech team	76000
4	ritesh	Junior Manager	SEO	15000
5	Rakesh	Area Manager	Sales Marketing	40000

---

;

Emp Id	Emp Name	Emp Designation	Emp Department	Emp Salary
1	Manish	Manager	Area Manager	73000
2	Kumar	Senior Manager	Tech team	65000
3	Kumari Puja	Junior Manager	Technical deptt	66000
4	Nillu Kumari	Asst Manager	Software Devloper	35000
5	Sita prasad	Software Develoer	Sales Area Manager	48000

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