Question

How to create an empty array with predefined size in PHP

Answer 1

$size = 10; 
$array = array_fill(0, $size, NULL);

print_r($array);




/*
run:

Array
(
    [0] => 
    [1] => 
    [2] => 
    [3] => 
    [4] => 
    [5] => 
    [6] => 
    [7] => 
    [8] => 
    [9] => 
)

*/

 

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Answer 2

$arr = array();
$arr = array_fill(0, 10, 0);

print_r($arr);
 
$arr[3] = 99;
$arr[7] = 14;

echo "\n\n";
print_r($arr); 

 
     
/*
run:
 
Array
(
    [0] => 0
    [1] => 0
    [2] => 0
    [3] => 0
    [4] => 0
    [5] => 0
    [6] => 0
    [7] => 0
    [8] => 0
    [9] => 0
)


Array
(
    [0] => 0
    [1] => 0
    [2] => 0
    [3] => 99
    [4] => 0
    [5] => 0
    [6] => 0
    [7] => 14
    [8] => 0
    [9] => 0
)

*/

 

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