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如何做到多筆資料的同步_php基础

May 17, 2016 am 09:47 AM

一次叫出多筆資料,然後在同一個網頁中「逐一」「分別」做不同的處理,最後「同時」對資料庫 update or insert 。每一筆資料所收到的update 、insert數據並不相同! ============================  
處理要點在於 _____ loop + array  

1.從資料庫叫出資料:  
db_query進行looping的同時,把相關欄位需要update的資料通通納入array.  
依照各人需求,這些資料可以用text、checkbox、或者hidden等各種型態呈現。當然,checkbox是最常見的type.  
例如,郵件處理網頁就大量使用checkbox.  
2.修改後的資料回存作業  
要點在count(array) + loop + db_update:  
根據count的結果進行迴旋,把db_update放進去,讓loop去完成所有資料的update回存作業。  
範例如下:  
================================================  
####1.update.php: 以loop+array取出資料以便update........  

  
#在這裡呼叫資料庫  
$query="select * from $userstable where...................  

#進入loop逐一取出資料  
$i=0;  
while ($i ...............  
$id=mysql_result($result,$i,"id");  
..................  
............................  
#以適當的type取出必須更新的欄位,構成array ..........  
echo "echo " ";  
echo "";  

$i++;  
endwhile;  


======================================================  
####2.activate.php:資料更新後,透過loop+array完成回存...................  

.......  
for ($i = 0; $i $name = $Cname[$i];  
$id= $Cid[$i];  

$query = "update $userstable set name='$name' where id='$id'";  
.............  
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