Question

我有以下代码，我收到错误：

警告：mysqli_stmt :: bind_result（）[mysqli-stmt.bind-result]：绑定变量数与文件中预准备语句中的字段数不匹配。

如果这只是一个警告，代码是否仍然有效？我想做一个select *并显示除了一个字段之外的所有数据，我想分别绑定和处理。有什么方法，或更好的方法？我的解决方案（未经验证）是使用getRecords将正确数量的变量绑定到结果，然后使用getHtml单独绑定为不同的名称。

绑定的优点是什么，是否必要。

<?php
if (isset($_GET["cmd"]))
  $cmd = $_GET["cmd"]; else
  die("You should have a 'cmd' parameter in your URL");
$id = $_GET["id"];
$con = mysqli_connect("localhost", "user", "password", "db");
if (!$con) {
    echo "Can't connect to MySQL Server. Errorcode: %s\n". mysqli_connect_error();
    exit;
}
$con->set_charset("utf8");
echo "test outside loop";
if($cmd=="GetSaleData") {
    echo "test inside loop";
    if ($getRecords = $con->prepare("SELECT SELECT Product_NO, Product_NAME, SUBTITLE, CURRENT_BID, START_PRICE, BID_COUNT, QUANT_TOTAL, QUANT_SOLD, ACCESSSTARTS, ACCESSENDS, ACCESSORIGIN_END, USERNAME, BEST_BIDDER_ID, FINISHED, WATCH, BUYITNOW_PRICE, PIC_URL, PRIVATE_AUCTION, AUCTION_TYPE, ACCESSINSERT_DATE, ACCESSUPDATE_DATE, CAT_DESC, CAT_PATH, COUNTRYCODE, LOCATION, CONDITIONS, REVISED, PAYPAL_ACCEPT, PRE_TERMINATED, SHIPPING_TO, FEE_INSERTION, FEE_FINAL, FEE_LISTING, PIC_XXL, PIC_DIASHOW, PIC_COUNT, ITEM_SITE_ID FROM Sales WHERE Product_NO = ?")) FROM SaleS WHERE PRODUCT_NO = ?")) {
        $getHtml = $con->prepare("SELECT PRODUCT_DESC FROM SaleS WHERE PRODUCT_NO = ?");
        $getHtml->bind_param("i", $id);
        $getHtml->execute();
        $getHtml->bind_result($PRODUCT_DESC);
        $getRecords->bind_param("i", $id);
        $getRecords->execute();
        $getRecords->bind_result($PRODUCT_NO, $PRODUCT_NAME, $SUBTITLE, $CURRENT_BID, $START_PRICE, $BID_COUNT, $QUANT_TOTAL, $QUANT_SOLD, $ACCESSSTARTS, $ACCESSENDS, $ACCESSORIGIN_END, $USERNAME, $BEST_BIDDER_ID, $FINISHED, $WATCH, $BUYITNOW_PRICE, $PIC_URL, $PRIVATE_Sale, $Sale_TYPE, $ACCESSINSERT_DATE, $ACCESSUPDATE_DATE, $CAT_DESC, $CAT_PATH, $COUNTRYCODE, $LOCATION, $CONDITIONS, $REVISED, $PAYPAL_ACCEPT, $PRE_TERMINATED, $SHIPPING_TO, $FEE_INSERTION, 
        $FEE_FINAL, $FEE_LISTING, $PIC_XXL, $PIC_DIASHOW, $PIC_COUNT, $ITEM_SITE_ID);
        while ($getRecords->fetch()) {
            // operations snipped for question
            echo "<h1>".$PRODUCT_NAME."</h1>
<div id='leftlayer' class='leftlayer'>
<p><strong>Username: </strong>".$USERNAME."
<p><strong>Shipping to: </strong> ". $country ."
<img src='./images/".$id.".jpg"' width='".$imageSize["width"]."' height='".$imageSize["height"]."'>
</div>
<div id='rightlayer'> 
</div>";
//
} 
}
}
}

我也想知道我的img src语句出了什么问题...，我觉得我正在嘲笑一些基本的东西，比如斜线或引号。

编辑：代码现在在用列名替换*后显示错误，但是从不输入while循环，因此不执行任何操作。

Answer 1

您可能需要明确说明SELECT中的列名，而不是使用*，as per the examples for MySQLi bind_result()。

关于img行，你有一个额外的“在.jpg之后

<img src='./images/".$id.".jpg"' width=

应该是

<img src='./images/".$id.".jpg width=

另外，实际上你不需要打破字符串并连接变量，因为使用“将导致字符串被解析为变量。

Answer 2

我猜这个问题在这里：

$getRecords->bind_result($PRODUCT_NO, $PRODUCT_NAME, $SUBTITLE, $CURRENT_BID, $START_PRICE, $BID_COUNT, $QUANT_TOTAL, $QUANT_SOLD, $ACCESSSTARTS, $ACCESSENDS, $ACCESSORIGIN_END, $USERNAME, $BEST_BIDDER_ID, $FINISHED, $WATCH, $BUYITNOW_PRICE, $PIC_URL, $PRIVATE_Sale, $Sale_TYPE, $ACCESSINSERT_DATE, $ACCESSUPDATE_DATE, $CAT_DESC, $CAT_PATH, $COUNTRYCODE, $LOCATION, $CONDITIONS, $REVISED, $PAYPAL_ACCEPT, $PRE_TERMINATED, $SHIPPING_TO, $FEE_INSERTION, 
        $FEE_FINAL, $FEE_LISTING, $PIC_XXL, $PIC_DIASHOW, $PIC_COUNT, $ITEM_SITE_ID);

你可能错过了一个专栏。如果列的数量少于结果集中检索的列数，则代码将起作用。

至于img标签，如果您使用的是xhmtl，则必须将其关闭。

Answer 3

我首先修复这一行：

if ($getRecords = $con->prepare("SELECT SELECT Product_NO, Product_NAME, SUBTITLE, CURRENT_BID, START_PRICE, BID_COUNT, QUANT_TOTAL, QUANT_SOLD, ACCESSSTARTS, ACCESSENDS, ACCESSORIGIN_END, USERNAME, BEST_BIDDER_ID, FINISHED, WATCH, BUYITNOW_PRICE, PIC_URL, PRIVATE_AUCTION, AUCTION_TYPE, ACCESSINSERT_DATE, ACCESSUPDATE_DATE, CAT_DESC, CAT_PATH, COUNTRYCODE, LOCATION, CONDITIONS, REVISED, PAYPAL_ACCEPT, PRE_TERMINATED, SHIPPING_TO, FEE_INSERTION, FEE_FINAL, FEE_LISTING, PIC_XXL, PIC_DIASHOW, PIC_COUNT, ITEM_SITE_ID FROM Sales WHERE Product_NO = ?")) FROM SaleS WHERE PRODUCT_NO = ?")) {

我认为它应该是这样的：

if ($getRecords = $con->prepare("SELECT Product_NO, Product_NAME, SUBTITLE, CURRENT_BID, START_PRICE, BID_COUNT, QUANT_TOTAL, QUANT_SOLD, ACCESSSTARTS, ACCESSENDS, ACCESSORIGIN_END, USERNAME, BEST_BIDDER_ID, FINISHED, WATCH, BUYITNOW_PRICE, PIC_URL, PRIVATE_AUCTION, AUCTION_TYPE, ACCESSINSERT_DATE, ACCESSUPDATE_DATE, CAT_DESC, CAT_PATH, COUNTRYCODE, LOCATION, CONDITIONS, REVISED, PAYPAL_ACCEPT, PRE_TERMINATED, SHIPPING_TO, FEE_INSERTION, FEE_FINAL, FEE_LISTING, PIC_XXL, PIC_DIASHOW, PIC_COUNT, ITEM_SITE_ID FROM Sales WHERE Product_NO = ?")) {

mysqli在准备好的语句中绑定字段

3 个答案: