ArrayObject offsetSet() Function in PHP

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The offsetSet() function of the ArrayObject class in PHP is used to update the value present at a specific index in the ArrayObject.

Syntax:

void offsetSet($index, $val)

Parameters: This function accepts two parameters $index and $val. This function updates the value present at the index, $index with $val.

Return Value: This function does not returns any value.

Below programs illustrate the above function:

Program 1:

<?php 
// PHP program to illustrate the 
// offsetSet() function 
  
$arr = array("zambiatek100", "zambiatek99", "zambiatek1", "zambiatek02"); 
  
// Create array object 
$arrObject = new ArrayObject($arr); 
  
// Update the value at index 1 
$arrObject->offsetSet(1, "Updated"); 
  
// Print the updated ArrayObject 
print_r($arrObject); 
  
?> 

Output:

ArrayObject Object
(
    [storage:ArrayObject:private] => Array
        (
            [0] => zambiatek100
            [1] => Updated
            [2] => zambiatek1
            [3] => zambiatek02
        )

)

Program 2:

<?php 
// PHP program to illustrate the 
// offsetSet() function 
  
$arr = array("Welcome"=>"1", "to" => "2", "GfG" => "3"); 
  
// Create array object 
$arrObject = new ArrayObject($arr); 
  
// Update the value at index "to" 
$arrObject->offsetSet("to", "UpdatedValue"); 
  
// Print the updated ArrayObject 
print_r($arrObject); 
  
?> 

Output:

ArrayObject Object
(
    [storage:ArrayObject:private] => Array
        (
            [Welcome] => 1
            [to] => UpdatedValue
            [GfG] => 3
        )

)

Reference: http://php.net/manual/en/arrayobject.offsetset.php