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我有一個問題,我想創建一個函數來計算數據庫中的數據。但我希望從列中計算一些ID而不是所有行。PHP count some rows
我的代碼不工作:
function countMember() {
include("./config/config.php");
$fetch_countMember = $fetch_countMember->prepare("SELECT * FROM `accounts`");
$fetch_countMember->execute();
while($fetch_countMember= $fetch_countMember->fetch()) {
if($fetch_countMember["member"] == 5 || $fetch_countMember["member"] == 6 || $fetch_countMember["member"] == 12 || $fetch_countMember["member"] == 13 || $fetch_countMember["member"] == 14 || $fetch_countMember["member"] == 15 || $fetch_countMember["member"] == 16 || $fetch_countMember["member"] == 17 || $fetch_countMember["member"] == 20 || $fetch_countMember["member"] == 21)
$c_member++;
}
return $c_member;
}
你有沒有錯誤?對於計數部分,它將是最好的,如果你可以改變這樣的查詢:SELECT * FROM'accounts' WHERE member IN(...) –