# Which PHP function returns the number of elements in an array?

## Which PHP function returns the number of elements in an array?

The count() function returns the number of elements in an array.

**How do you find the number of rows in a 2D array?**

Number of rows in 2d array Use len(arr) to find the number of row from 2d array. To find the number columns use len(arr[0]). Now total number of elements is rows * columns.

### How do I count the same elements in an array?

To count the duplicates in an array, declare an empty object variable that will store the count for each value and use the forEach() method to iterate over the array. On each iteration, increment the count for the value by 1 or initialize it to 1 if it hasn’t been set already.

**What is a multidimensional array?**

In the previous pages, we have described arrays that are a single list of key/value pairs. However, sometimes you want to store values with more than one key. For this, we have multidimensional arrays. A multidimensional array is an array containing one or more arrays.

#### How to count the number of elements in an array?

The count () function returns the number of elements in an array. Required. Specifies the array Optional. Specifies the mode. Possible values: 0 – Default. Does not count all elements of multidimensional arrays

**What is the dimension of an array in Python?**

The dimension of an array indicates the number of indices you need to select an element. A two-dimensional array is an array of arrays (a three-dimensional array is an array of arrays of arrays).

## How do you store data in a two-dimensional array?

We can store the data from the table above in a two-dimensional array, like this: Now the two-dimensional $cars array contains four arrays, and it has two indices: row and column. To get access to the elements of the $cars array we must point to the two indices (row and column):