[英]How do I loop through my array and save it to database (PHP)?
我的數據庫中有一個表 select,希望用戶只更新其中的一列。 我使用在每行末尾添加的用戶輸入框將行回顯到表中。 我嘗試了 foreach 循環並以錯誤結束“致命錯誤:未捕獲錯誤:class mysqli_result 的 Object 無法轉換為字符串...”當我打印用戶輸入的數組時,它會顯示,但我是努力在准備好的陳述中使用它。
<?php
if (isset($_POST['save'])){
if(!empty($_POST['newbid'])) {
$biduserID = $_SESSION['id'];
$itemID = $_GET['ItemId'];
$bidprice = ($_POST['newbid']);
$getcurrentround = "SELECT `Round` FROM `RoundCounter` WHERE `ItemID` =".$_GET['ItemId']."";
$currentroundresult= $db->query($getcurrentround);
$currentround = $currentroundresult->fetch_assoc();
$currentround1 = $currentround['Round'];
$biddername = $_SESSION["id"];
$count = $_POST['count'];
$newbid = $_POST['newbid']; // check empty and check if interger
print_r($newbid);
$getusername = "SELECT `Username` FROM `User` WHERE `UserID` = `$biddername`";
$username1= $db->query($getusername);
$getbandname = "SELECT `BandName` FROM `BidTables` WHERE `ItemID` =" .$_GET['ItemId']."";
$bandname= $db->query($getbandname);
$getnumberlots = "SELECT numberlots FROM `Item` WHERE `ItemID` =".$_GET['ItemId']."";
$numberlots= $db->query($getnumberlots);
$bid = 1;
foreach($_POST as $bid => $value) {
$sql4 = "INSERT INTO BidTables (`BandName`,`BidderID`, `ItemID`, `BidPrice`, `Round`, `Username`) VALUES
(?,?,?,?,?,?)";
$stmt = $db->prepare($sql4);
echo $db->error;
$stmt->bind_param("siiiis", $bandname, $biduserID, $itemID, $bid ,$currentround1, $username1 );
$stmt->execute();
}
}
?>
這是帶有表格數據的提交按鈕:
<form action="" method="POST">
<table class="table table-hover">
<thead class="thead">
<tr class="header">
<th>ID</th>
<th>Band</th>
<th>Current Price</th>
</tr>
<?php
$sql = "SELECT * FROM BidTables WHERE ItemID = ".$_GET['ItemId']." ORDER BY `Round` DESC";
$resultSQL= mysqli_query($db, $sql);
if(mysqli_num_rows($resultSQL) > 0){
}
?>
</thead>
<tbody>
<!-- PHP CODE TO FETCH DATA FROM ROWS -->
<tr>
<?php
// LOOP TILL END OF DATA
while($row = $resultSQL->fetch_assoc()) {
?>
<tr>
<td><?=$row['bidtable']?></td>
<td><?=$row['BandName']?></td>
<td><?=$row['BidPrice']?></td>
<td><input type="number" name="newbid[]" size="10" /></td>
</tr>
<?php } ?>
</table>
<input type="hidden" name="count" value="<?=$resultSQL->num_rows?>" />
<button class="btn btn-primary btn-lg" name="save">Submit</button>
</form>
我感謝任何幫助/指點
編輯 1:我已經為每個 SELECT 使用了准備好的語句,我在 INSERT function 中收到了每個語句的錯誤:“警告:數組到字符串的轉換......”
這是准備好的語句的代碼:
<?php
if (isset($_POST['save'])){
if(!empty($_POST['newbid'])) {
$biduserID = $_SESSION['id'];
$itemID = $_GET['ItemId'];
$bidprice = ($_POST['newbid']);
$count = $_POST['count'];
$newbid = $_POST['newbid']; // check empty and check if interger
print_r($newbid);
$sql6 = "SELECT `Round` FROM `RoundCounter` WHERE `ItemID` =?"; // SQL with parameters
$stmt6 = $db->prepare($sql6);
$stmt6->bind_param("i", $itemID);
$stmt6->execute();
$result6 = $stmt6->get_result(); // get the mysqli result
$round = $result6->fetch_assoc(); // fetch data
$sql7 = "SELECT `Username` FROM `User` WHERE `UserID` = ?"; // SQL with parameters
$stmt7 = $db->prepare($sql7);
$stmt7->bind_param("i", $biduserID);
$stmt7->execute();
$result7 = $stmt7->get_result(); // get the mysqli result
$username = $result7->fetch_assoc(); // fetch data
$sql8 = "SELECT `BandName` FROM `BidTables` WHERE `ItemID` =?"; // SQL with parameters
$stmt8 = $db->prepare($sql8);
$stmt8->bind_param("i", $itemID);
$stmt8->execute();
$result8 = $stmt8->get_result(); // get the mysqli result
$bandname = $result8->fetch_assoc(); // fetch data
$sql9 = "SELECT numberlots FROM `Item` WHERE `ItemID` =?"; // SQL with parameters
$stmt9 = $db->prepare($sql9);
$stmt9->bind_param("i", $itemID);
$stmt9->execute();
$result9 = $stmt9->get_result(); // get the mysqli result
$numberlots = $result9->fetch_assoc(); // fetch data
foreach($_POST as $bid => $value) {
$sql4 = "INSERT INTO BidTables (`BandName`,`BidderID`, `ItemID`, `BidPrice`, `Round`, `Username`) VALUES
(?,?,?,?,?,?)";
$stmt = $db->prepare($sql4);
echo $db->error;
$stmt->bind_param("siiiis", $bandname, $biduserID, $itemID, $bid ,$round, $username );
$stmt->execute();
}
}
}
?>
有人好心地幫我找到了問題,我錯誤地准備了我的桌子。 最后的循環看起來像這樣:
foreach ($newBidIds as $id){
$insertStmt = $db->prepare("INSERT INTO BidTables (`BandName`,`BidderID`, `ItemID`, `BidPrice`, `Round`, `Username`) VALUES (?,?,?,?,?,?) ;");
$insertStmt->bind_param("siiiis", $bandname1, $bidUserID, $itemID, $id,$round1, $username);
$insertStmt->execute();
}
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