Description:
------------
I have made PHP script which read excel file and its to
MySQL database.
Well script works properly everywhere.. but when are records less
if the records goes above 400 or 500 then file executes half only..
above 400 or 500 no record is added..
I just want solutions for this code. that it should not stop executing
code.

Reproduce code:
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require_once 'Excel/reader.php';

$Filename="test.xls";

$reader = new Spreadsheet_Excel_Reader();
$reader->setOutputEncoding("UTF-8");

$reader->read($Filename);

print "Please wait process started..<br><br>";

for ($i = 2; $i <= $reader->sheets[0]["numRows"]; $i++)
{
 $r1=$reader->sheets[0]["cells"][$i][2];
 $r2=$reader->sheets[0]["cells"][$i][3];
 $r3=$reader->sheets[0]["cells"][$i][4];
 $r4=$reader->sheets[0]["cells"][$i][5];
 $r5=$reader->sheets[0]["cells"][$i][6];
 $r6=$reader->sheets[0]["cells"][$i][7];
 $r7=$reader->sheets[0]["cells"][$i][8];
 $r8=$reader->sheets[0]["cells"][$i][9];
 $r9=$reader->sheets[0]["cells"][$i][10];
 $r10=$reader->sheets[0]["cells"][$i][11];
 $r11=$reader->sheets[0]["cells"][$i][12];
 $r12=$reader->sheets[0]["cells"][$i][13];

mysql_query("insert into bea_role(zone,branch,solid,name,empid,functional_role,target_policy,target_wpc_in_lacs,issued_achvt_policies,issued_achvt_wpc_in_lacs,achvt_policies,achvt_wpc)
values('$r1','$r2','$r3','$r4','$r5','$r6','$r7','$r8','$r9','$r10','$r11','$r12')") or die(mysql_error());

}
print "Process Completed..";

Expected result:
----------------
Expected Result is expected that it should print both lines..
like

Please wait process started..


Process Completed..

and also it should process whole file

Actual result:
--------------
But the actual result is

Please wait process started..

the ending statement doesnt come. Hlaf of the file remains unprocessed.
Please provide solutions.