[請益]supplied argument isnot a valid MySQL result resource問題

[idcomputer (大順)]

$sqlstr1 = "SELECT * FROM twodata ORDER BY sd ASC";
$res1 = mysql_query($sqlstr1);
$row1 = mysql_fetch_assoc($res1);
$totalRows1 = mysql_num_rows($res1);
                                          <==187
$sqlstr2 = "SELECT * FROM twodata";       <==188
$res2 = mysql_query($sqlstr2);
$row2 = mysql_fetch_assoc($res2);
$totalRows2 = mysql_num_rows($res2);

連續送出兩次的查詢!!!

下方的陣列有正常顯示

不過網頁卻出現

Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL
result resource in C:\AppServ\www\two.php on line 187

Warning: mysql_num_rows(): supplied argument is not a valid MySQL
result resource in C:\AppServ\www\two.php on line 188

想請問問題是出在?!

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