Syntax:int SplFixedArray::key()
Parameters:this the function takes no parameters.
Returned value:this function returns the key of the current index of the array.The programs below illustrate the
function SplFixedArray::key ( )in PHP:
Program 1:
// Create a fixed size array
$gfg
=
new
SplFixedArray ( 6);
$gfg
[0] = 1;
$gfg
[1] = 5;
$gfg
[2] = 1;
$gfg
-> next();
$gfg
-> next();
// Print the current position key
echo
$gfg
-> key().
""
;
?>
Exit:2
Program 2:
// 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;
// Loop through the array and display values
while
(
$gfg
-> valid()) {
// Print the key of each index
echo
$gfg
-> key().
""
;
$gfg
-> next();
}
?>
Exit:0 1 2 3 4 5
Link: https://www.php .net / manual / en / splfixedarray.key.php