为什么不给出货币的结果呢？ （是货币换算）
[英]why does it not give the result of the currency? (is currency conversion)
问题描述
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Divisas</title>
</head>
<body>
<div class="contenedor" >
<form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>"
method="post">
<select name="origen" id="origen" >
<option value="Divisas" <?php if($_POST['destino']=="Divisas")echo'selected="selected"';?>>Divisas</option>
<option value="Pesos" <?php if($_POST['origen']=="Pesos")echo'selected="selected"';?>>Pesos</option>
<option value="Dolar" <?php if($_POST['origen']=="Dolar")echo'selected="selected"';?>>Dolar</option>
<option value="Euros" <?php if($_POST['origen']=="Euros")echo'selected="selected"';?>>Euros</option>
<option value="Libras" <?php if($_POST['origen']=="Libras")echo'selected="selected"';?>>Libras</option>
</select> <br>
<input type="number" name="formulario" name="dinero" placeholder="Cantidad" value="<?php if(isset($_POST['dinero'])){echo$_POST['dinero'];} ?>"> <br>
<select name="destino" >
<option value="Divisas" <?php if($_POST['destino']=="Divisas")echo'selected="selected"';?>>Divisas</option>
<option value="Pesos" <?php if($_POST['destino']=="Pesos")echo'selected="selected"';?>>Pesos</option>
<option value="Dolar" <?php if($_POST['destino']=="Dolar")echo'selected="selected"';?>>Dolar</option>
<option value="Euros" <?php if($_POST['destino']=="Euros")echo'selected="selected"';?>>Euros</option>
<option value="Libras" <?php if($_POST['destino']=="Libras")echo'selected="selected"';?>>Libras</option>
</select> <br>
<?php
error_reporting(0);
$origen=htmlspecialchars($_POST['origen']);
$destino=htmlspecialchars($_POST['destino']);
$cantidad=htmlspecialchars($_POST['dinero']);
$resul="";
$post=(isset($_POST['origen']))&&!empty($_POST['origen'])
&&(isset($_POST['destino']))&&!empty($_POST['destino'])
&&(isset($_POST['dinero']))&&!empty($_POST['dinero']);
if ($origen=="Pesos"&& $destino=="Pesos") {
$resul=$cantidad;
}elseif ($origen=="Pesos" && $destino=="Dolar") {
$resul=$cantidad/20;
}elseif ($origen=="Pesos" && $destino=="Euros") {
$resul=$cantidad/23;
}elseif ($origen=="Pesos" && $destino=="Libras") {
$resul=$cantidad/27;
}
?>
<input type="number" class="form-control" name="cambio" placeholder="Tipo" value="<?$resul?>" > <br>
<input type="submit" name="calcular" class="btn btn-cal" value="Calcular"><br>
</body>
</html>
我要做一个货币转换，但是当我运行它时，动作没有完成，我找不到错误。
1 个解决方案
解决方案1
0
我不知道..我试着这样解决：
<?php
$conv = ['Pesos' => 1, 'Dolar' => 20.08 , 'Euros' => 22.07, 'Libra' => 26.31];
$value = isset($_POST['dinero']) ? (float) $_POST['dinero'] : null ;
$origen = isset($_POST['origen']) && is_string($_POST['origen']) ? $_POST['origen'] : null ;
$destino = isset($_POST['destino']) && is_string($_POST['destino']) ? $_POST['destino'] : null ;
if (isset($conv[$origen], $conv[$destino]))
$resul = $value * $conv[$origen] / $conv[$destino] ;
else
$resul = null ;
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Divisas</title>
</head>
<body>
<div class="contenedor">
<form action="<?= htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="post">
<select name="origen" id="origen">
<option>Divisas</option>
<?php
foreach($conv as $k => $v)
{
echo '<option';
if ($origen == $k)
echo ' selected';
echo '>', $k, '</option>';
}
?>
</select>
<br>
<input type="number" name="dinero" placeholder="Cantidad" value="<?= isset($value) ? $value : '' ?>"> <br>
<select name="destino" id="destino">
<option>Divisas</option>
<?php
foreach($conv as $k => $v)
{
echo '<option';
if ($destino == $k)
echo ' selected';
echo '>', $k, '</option>';
}
?>
</select>
<br>
<?php
?>
<input type="number" class="form-control" name="cambio" placeholder="Tipo" value="<?= isset($resul) ? number_format($resul, 2, '.', '') : '' ?>" >
<br>
<input type="submit" name="calcular" class="btn btn-cal" value="Calcular">
<br>
</form>
</div>
</body>
</html>
用于货币转换的php脚本
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