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
