<?php

$test = array();

$i = 10;
while (--$i) {
    $test[] = "test";
}

print_r($test);

?>

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