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)); ?> |
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 ++; } ?> |
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
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