PHP | SplFixedArray __construct() Function

The SplFixedArray::__construct() function is an inbuilt function in PHP which is used to construct a new fixed size array.

Syntax:

void SplFixedArray::__construct( $size )

Parameters: This function accepts single parameter $size which specifies the size of an array.

Return Value: This function does not return any value.

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

Program 1:

<?php

// Create new fixed array of size 2
$gfg = new SplFixedArray(2);

$gfg[1] = "GeeksforGeeks";

// Print Result
var_dump($gfg[0]);
var_dump($gfg[1]);

?>

Output:

NULL
string(13) "GeeksforGeeks"

Program 2:

<?php

// Create new fixed array of size 8
$gfg = new SplFixedArray(8);

$gfg[2] = 5;
$gfg[4] = "gfg";
$gfg[5] = "Geeks";
$gfg[7] = "GeeksforGeeks";

// Iterate array and print its values
foreach( $gfg as $i ) {
    var_dump($i);
}
?>

Output:

NULL
NULL
int(5)
NULL
string(3) "gfg"
string(5) "Geeks"
NULL
string(13) "GeeksforGeeks"

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