- array_fill: documentation ( source)
<?php
$array = array_fill(0, 1000, 5);
$copy = array();
foreach( $array as $i => $foobar )
{
$copy[$i+10] = $foobar;
}
foreach( $copy as $i => &$foobar )
{
$array[$i-10] = $foobar = 10;
}
echo $array[0];
echo $copy[10];