Well, I tried the following script which works:
<?php
$i = 0;
while ($i < 5) 
{
        $x[$i] = 1;
        $i++;
}

$i = 0;
while($x[$i]) 
{
        echo value ".$i.": ".$x[$i]."<br>";
        $i++;
}

?>

but the following does not:

<?php
//$i = 0;
while ($i < 5) 
{
        $x[$i] = 1;
        $i++;
}

$i = 0;
while($x[$i]) 
{
        echo value ".$i.": ".$x[$i]."<br>";
        $i++;
}

?>
That is the same code as yours. It generates an array in the first while
loop and prints each value in the second one.

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