[英]html php MySQL insert multiple rows into db from a repeating html form
[英]Get rows from DB with PHP, get the values from rows and insert in HTML
我想从数据库中获取符合条件的行,从每一行获取特定值并将这些值粘贴到不同的 HTML 中。
例如 DB 匹配来自标准 = id 为 3、7 和 30 的行
我想从第 3 行中取出“名称”并将其放入<div id='firstResult'></div>
然后从第 7 行中取出 'name' 并将其放入<div id='secondResult'></div>
最后,我想从第 30 行中取出 'name' 并将其放入<div id='thridResult'></div>
我知道如何将它们放在 HTML 中,但我正在为 PHP 部分苦苦挣扎。 到目前为止,我得到了:
<?php
include_once 'databaseconn.php';
$ramResult = $_POST['ram'];
$graphcardResult = $_POST['graphcard'];
$processorResult = $_POST['processor'];
$sql = "SELECT * FROM laptops WHERE ram = '$ramResult' AND graphcard = '$graphcardResult' AND processor = '$processorResult' ;";
$result = mysqli_query($conn, $sql);
if ($result->num_rows > 0) {
while($row = $result->fetch_assoc()) {
$nameResult = $row['name'];
$ramResult = $row['ram'];
$graphcardResult = $row['graphcard'];
$processorResult = $row['processor'];
$imgResult = $row['img'];
$imgId = $row['id'];
}
}
?>
我想给结果数字,比如第一个结果是 1,第二个是 2,等等,然后得到$firstResult['name']
不确定这是否是正确的方法,因为我是一个新手,我有一个很难弄清楚如何做到这一点。 我希望你能把我推向正确的方向。
完成,DB:
id | name | ram | graph | processor | url
1 | data | data| data | data | data
2 | data | data| data | data | data
3 | data | data| data | data | data
等等..
从概念上讲,您可以通过多种方式实现这一点。
<?php
include_once 'databaseconn.php';
$ramResult = $_POST['ram'];
$graphcardResult = $_POST['graphcard'];
$processorResult = $_POST['processor'];
$sql = "SELECT * FROM laptops WHERE ram = '$ramResult' AND graphcard = '$graphcardResult' AND processor = '$processorResult' ;";
$result = mysqli_query($conn, $sql);
$list = mysqli_fetch_all ($result, MYSQLI_NUM); //RETURN INDEXED ARRAY
//CREATES AN EMPTY STRING
$output = "";
if(count($list) > 0){ //CHECK IF THERE IS A RESULT.
//if ($result->num_rows > 0) {
for($i=0; $i < count($list); $i++){
//while($row = $result->fetch_assoc()) {
$nameResult = $list[$i]['name'];
$ramResult = $list[$i]['ram'];
$graphcardResult = $list[$i]['graphcard'];
$processorResult = $list[$i]['processor'];
$imgResult = $list[$i]['img'];
$imgId = $list[$i]['id'];
//CONDITIONALLY CHECK VALUE AND ALTER OUTPUT
if($i == "0"){
// .= operator will append the string to the end of the existing string.
$output .= "<div id='firstResult'>".$nameResult."</div>";
}elseif($i == "1"){
$output .= "<div id='secondResult'>".$nameResult."</div>";
}elseif($i == "2"){
$output .= "<div id='thirdResult'>".$nameResult."</div>";
}else{
/*... default output ... */
}
}
//ONCE OUTPUT IS BUILT, You can echo it, or use it in your template.
echo $output;
}
?>
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