PHP | SplFixedArray offsetUnset () Function

The SplFixedArray::offsetUnset() function is an inbuilt function in PHP which is used to unset the value of the requested index.

Syntax:

void SplFixedArray::offsetUnset( $index )

Parameters: This function accepts a single parameter $index which specifies the required index whose values need to unset.

Return Value: This function does not return any value.

Below programs illustrate the SplFixedArray::offsetUnset() function in PHP:

Program 1:

<?php 
  
// Create a fixed size array 
$gfg = new SplFixedArray(6); 
  
$gfg[0] = 1; 
$gfg[1] = 5; 
$gfg[2] = 10; 
  
// Print current offset 
var_dump($gfg->offsetGet(2)); 
  
// Unset offset 
$gfg->offsetUnset (2); 
  
// Print after unset 
var_dump($gfg->offsetGet(2)); 
  
?> 

Output:

int(10)
NULL

Program 2:

<?php 
  
// Create some fixed size array 
$gfg = new SplFixedArray(6); 
  
$gfg[0] = 1; 
$gfg[1] = 5; 
$gfg[2] = 1; 
$gfg[3] = 11; 
$gfg[4] = 15; 
$gfg[5] = 17; 
  
$i = 0; 
  
while($i < 6) { 
      
    // Print current offset 
    var_dump($gfg->offsetGet($i)); 
  
    // Unset offset 
    $gfg->offsetUnset ($i); 
  
    // Print after unset 
    var_dump($gfg->offsetGet($i)); 
  
    $i++; 
} 
?> 

Output:

int(1)
NULL
int(5)
NULL
int(1)
NULL
int(11)
NULL
int(15)
NULL
int(17)
NULL

Reference: https://www.php.net/manual/en/splfixedarray.offsetunset.php

My Personal Notes

Recommended Posts:

R_Raj

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.