The **`prev` method** is used to move the position of the internal pointer of the array one step backward and return the value.

> In PHP, each array contains an internal pointer that points to the current element. It initially points to the first element of the array. We can move the pointer positions using methods like `next`, `prev`, etc.

#   
#  Syntax

```
prev(array|object &$array): mixed
```

If an array is empty or if the position pointed by the internal pointer is before the first element of the array, then `false` is returned.


##  
## Example

<?php 
  $numbers = [1,2,3];

  // 3
  echo "Last value is : ". end($numbers). "\n";

  //2   
  echo "Previous value is : ". prev($numbers). "\n";

  //1
  echo "Previous value is : ". prev($numbers). "\n";
  
  // pointer now points before first element 
  echo "Previous Value is : ";
  var_dump(prev($numbers));
  
?>

In the code above:

* We created a `numbers` array. 

* We moved the internal pointer to the last element of the array using the `end` method and printed the value.

* We used the `prev` method to move the pointer position *one step backward* and printed the value pointed by the pointer. 

What is the prev() method in PHP?

Moves PHP array pointer backward, returns value. Returns false if array is empty or pointer is before the first element.