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我正在尝试使用此处制作表格，php但我被卡住了！
我制作了一个表格，将所有类型的food课程分配给单选按钮：

<form action="proberen.php" method="post">

<label>Klantnummer</label>
<input type="text" name="txtklantnr" /><br/>

<label>Voornaam</label>
<input type="text" name="txtfname" /><br/>

<label>Achternaam</label>
<input type="text" name="txtlname" /><br/>

<br/>
<br/>
---------------------
<br/>
Menu
<br/>
---------------------
<br/>
<br/>
<label>first dish</label><br/><br/>

<label>Soup</label>
<input type="radio" name="txtvoor"  checked="checked" value="soup" />
<label>8 euro</label><br/>

<label>Slaatje</label>
<input type="radio" name="txtvoor" value="sla"  />
<label>6 euro</label><br/><br/>

<label>main dish</label><br/><br/>

<label>Kip met Friet</label>
<input type="radio" name="txthoofd"  checked="checked" value="kip" />
<label>12euro</label><br/>

<label>Worst met Patat</label>
<input type="radio" name="txthoofd" value="worst" />
<label>10euro</label><br/><br/>

<label>Dessert</label><br/><br/>

<label>Ijs</label>
<input type="radio" name="txtna"  checked="checked" value="ijs" />
<label>4euro</label><br/>

<label>Taart</label>
<input type="radio" name="txtna" value="taart" />
<label>5 euro</label><br/><br/>

<input type="submit" value="Bereken Totaal" />

</form>

我创建了一个包含所有收据的数据库和一个包含所有价格的数据库。
这是我的 php：

<?php
$fldklantnr = $_POST["txtklantnr"];

$fldvnaam = $_POST["txtfname"];
$fldanaam = $_POST["txtlname"];

$fldvoor = $_POST["txtvoor"];
$fldhoofd = $_POST["txthoofd"];
$fldna = $_POST["txtna"];

$db = MySql_connect("localhost","root","root");
Mysql_select_db("menutest",$db);

$result=("select * from tblmenu where fldvoor='$fldvoor'");
$resultb=("select * from tblmenu where fldhoofd='$fldhoofd'");
$resultc=("select * from tblmenu where fldna='$fldna'");

$fldtotaal = $resultd + $resulte+$resultf;


    echo "Beste $fldvnaam $fldanaam.<br/>U heeft het volgende besteld:<br/>";
    echo " $fldvoor <br/>"; 
    echo " $fldhoofd <br/>" ;
    echo " $fldna <br/>" ;
    echo "Het totaal bedrag is $fldtotaal euro. <br/>Bedankt voor uw bestelling.";

$sql="insert into tblmenu values('$fldklantnr','$fldvnaam','$fldanaam','$fldvoor','$fldhoofd','$fldna','$fldtotaal')";

MySql_query($sql,$db);

?>

现在我想计算订购菜单的总和：价格在我的tblprijzen，我尝试了这样的事情：

if ($result==soup){
    $resultd=("select *from tblprijs where fldsoup='fldsoup'");
}
else{
    $resultd=("select *from tblprijs where fldslaatje='fldslaatje'");
}

if ($resultb==kip){
    $resulte=("select *from tblprijs where fldkip='fldkip'");
}
else{
    $resulte=("select *from tblprijs where fldworst='fldworst'");
}

if ($resultc==ijs){
    $resultf=("select from tblprijs where fldijs='fldijs'");
}
else{
    $resultf=("select from tblprijs where fldtaart='fldtaart'");
}

$totaal = $resultd + $resulte + $resultf;

但它没有做任何事情:(

尝试完成这项工作超过 2 天，如果我明天通过那次考试，我会很高兴 :)

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