The offsetUnset() function of the ArrayObject class in PHP is used to unset the value preset at a specific index. In other words, it is used to remove a value present at a specific index in the ArrayObject.
Syntax:
void offsetUnset($index)
Parameters: This function accepts a single parameter $index which is the index whose value is to be unset.
Return Value: This function does not returns any value.
Below programs illustrate the above function:
Program 1:
<?php // PHP program to illustrate the // offsetUnset() function   $arr = array("Welcome"=>"1", "to" => "2", "GfG" => "3");   // Create array object $arrObject = new ArrayObject($arr);   // Unset the value at index "to" $arrObject->offsetUnset("to");   // Print the updated ArrayObject print_r($arrObject);   ?> |
Output:
ArrayObject Object
(
[storage:ArrayObject:private] => Array
(
[Welcome] => 1
[GfG] => 3
)
)
Program 2:
<?php // PHP program to illustrate the // offsetUnset() function   $arr = array("neveropen100", "neveropen99", "neveropen1", "neveropen02");   // Create array object $arrObject = new ArrayObject($arr);   // Unset the value at index 1 $arrObject->offsetUnset(1);   // Unset the value at index 1 $arrObject->offsetUnset(2);   // Print the updated ArrayObject print_r($arrObject);   ?> |
Output:
ArrayObject Object
(
[storage:ArrayObject:private] => Array
(
[0] => neveropen100
[3] => neveropen02
)
)
Reference: http://php.net/manual/en/arrayobject.offsetunset.php
