我正在尝试显示从“日期”中选择的数据库表中的数据。查询执行,但是当我回显时,我没有得到任何结果。你能帮我解决这个问题吗?
<?php include 'includes/connection.php'; ?>
<html>
<head>
<title> </title>
</head>
<body>
<?php
if(isset($_POST['submitted'])){
$sql = "SELECT * FROM dagtaken WHERE datum = $_POST[datum]";
$result = mysql_query($sql) or die (mysql_error());
while ($row = mysql_fetch_array($result)){
echo $row['aantal'];
}
}else{
?>
<form action='' method='POST'>
<p><input type="date" name="datum"></p>
<p><input type='submit' value='Dagtaak toevoegen' />
<input type='hidden' value='1' name='submitted' /></p>
</form>
<?php } ?>
</body>
</html>