[英]php | mysqli Select Multi tables mysqli [on hold]
即時通訊試圖從多表中選擇多個信息,但很麻煩,如果有人可以幫助我進行一些指導,如何查詢此信息,我表示<3
//Create the query and send it to the database.
$sql = "SELECT items.item_name, inventory.item_id, inventory.amount , player.id FROM items, inventory, player WHERE player.ID = '".$ID."'";
if ($result = $mysqli->query($sql))
{
/* fetch associative array */
$row = $result->fetch_assoc()
echo $row["item_name"];
echo $row["amount"];
/* free result set */
//$result->free();
}
$mysqli->close();
如果我了解您的問題,請嘗試使用此方法:
SELECT items.item_name, inventory.item_id, inventory.ammount, player.id FROM items LEFT JOIN inventory ON items.id = inventory.items_id LEFT JOIN player ON “connect tables (player and items) with some id” WHERE player.ID = “.$ID.”
你需要加入三個表來從數據庫中獲得的數據(見https://www.w3schools.com/sql/sql_join_inner.asp , https://www.w3schools.com/sql/sql_join_left.asp )。
要加入三個表,您需要通過一些ID或名稱將它們連接起來。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.