PHP更新數組中的值

Question

我想更新從數組中獲取的表中的值。我沒有得到任何錯誤，但它並沒有更新我的表ex_test_setting。我究竟做錯了什麼？我跟着其他帖子和谷歌搜索，但我不能得到一個正確的答案。

echo "<strong>Checking if the test points changed</strong>"; 
echo "</BR>"; 
$getTotalPoints = mysql_query("SELECT SUM(points_available) FROM ex_question WHERE test_name = '$tid_mod1'") or die(mysql_error()); 
$totalPoints = mysql_fetch_array($getTotalPoints); 
echo "New points for test: " . $totalPoints['SUM(points_available)']; 
echo "</BR>"; 

$sql2="SELECT DISTINCT point FROM ex_test_setting WHERE testid = '$tid_mod1'"; 
$res2=mysql_query($sql2); 
while($row2 = mysql_fetch_array($res2)) { 
$point1=$row2['point']; 
echo "Old points for test: " . $point1; 
echo "</BR>"; 
} 


if ($totalPoints['SUM(points_available)'] <> $point1) { 
echo "Updating..."; 
$newpoint = $totalPoints['SUM(points_available)']; 
echo $newpoint; 
mysql_query("UPDATE ex_test_setting SET point = '$newpoint' WHERE test_name = '$tid_mod1'"); 
} 

Answer 1

試試這個代碼： -

echo "<strong>Checking if the test points changed</strong>"; 
echo "</BR>"; 
$getTotalPoints = mysql_query("SELECT SUM(points_available) as point_av FROM ex_question WHERE test_name = '$tid_mod1'") or die(mysql_error()); 
$totalPoints = mysql_fetch_array($getTotalPoints); 
echo "New points for test: " . $totalPoints['point_av']; 
echo "</BR>"; 

$sql2="SELECT DISTINCT point FROM ex_test_setting WHERE testid = '$tid_mod1'"; 
$res2=mysql_query($sql2); 
while($row2 = mysql_fetch_array($res2)) { 
$point1=$row2['point']; 
echo "Old points for test: " . $point1; 
echo "</BR>"; 
} 


if ($totalPoints['point_av'] != $point1) { 
echo "Updating..."; 
$newpoint = $totalPoints['point_av']; 
echo $newpoint; 
mysql_query("UPDATE ex_test_setting SET point = '$newpoint' WHERE test_name = '$tid_mod1'"); 
}