It's not a crash but a strange behaviour.
Try this script and look the result (below) :
<?
$MyArray[00]="00";
$MyArray[01]="01";
$MyArray[02]="02";
$MyArray[03]="03";
$MyArray[04]="04";
$MyArray[05]="05";
$MyArray[06]="06";
$MyArray[07]="07";
$MyArray[08]="08";
$MyArray[09]="09";
$MyArray[10]="10";
for($i=0;$i<11;$i++)
{
	printf("$i : %s<BR>\n",$MyArray[$i]);
}
?>

I've made my array with 0s because I've filled my indices
with UltraEdit. If I remove the unwanted 0s, everything
is ok.

Here is the result (results are worst with previous versions
of PHP 4.03 pl1) :

0 : 09
1 : 01
2 : 02
3 : 03
4 : 04
5 : 05
6 : 06
7 : 07

<b>Warning</b>:  Undefined offset:  8 in <b>bug.php</b> on line <b>15</b>
8 : 

<b>Warning</b>:  Undefined offset:  9 in <b>bug.php</b> on line <b>15</b>
9 : 
10 : 10


My php.ini is the standard distributed file.

Bye,
Herv?