我制作了一个简单的表单，其中有一个复选框，根据复选框是否设置，它会回显true或false，但每次我点击提交时，复选框控件都会被勾选，它似乎会重置。
我如何修改我的代码来存储任何表单控件的值，这样如果我勾选了框，那么在我单击提交后它仍然是勾选的？
<?php
// Setup Variables
$Result = '';
if (isset($_POST["submit"])) {
//Use Captials?
if(isset($_POST['formCheckbox']) && $_POST['formCheckbox'] == 'Yes') {
$Result = "true";
} else {
$Result = "false";
}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Bootstrap Contact Form</title>
<link rel="stylesheet" href="css/bootstrap.min.css">
</head>
<body>
<div class="container">
<div class="row">
<div class="col-md-6 col-md-offset-3">
<h1 class="page-header text-center">Contact Form Example</h1>
<form class="form-horizontal" role="form" method="post" action="index.php">
Checkbox
<input type="checkbox" name="formCheckbox" value="Yes"/>
<div class="form-group">
<div class="col-sm-10 col-sm-offset-2">
<input id="submit" name="submit" type="submit" value="Send" class="btn btn-primary">
</div>
</div>
</form>
<div class="col-sm-10 col-sm-offset-2">
<?php echo $Result; ?>
</div>
</div>
</div>
</div>
<script src="js/jquery.min.js"></script>
<script src="js/bootstrap.min.js"></script>
</body>
</html>
添加选中的属性&更改复选框的显示方式：
<?php
// Setup Variables
$Result = '';
if (isset($_POST["submit"])) {
//Use Captials?
if(isset($_POST['formCheckbox']) && $_POST['formCheckbox'] == 'Yes') {
$Result = "true";
} else {
$Result = "false";
}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Bootstrap Contact Form</title>
<link rel="stylesheet" href="css/bootstrap.min.css">
</head>
<body>
<div class="container">
<div class="row">
<div class="col-md-6 col-md-offset-3">
<h1 class="page-header text-center">Contact Form Example</h1>
<form class="form-horizontal" role="form" method="post" action="index.php">
Checkbox
<?php
if(isset($_POST['formCheckbox']) && $_POST['formCheckbox'] == 'Yes') {
echo '<input type="checkbox" name="formCheckbox" value="Yes" checked/>';
}
else
echo '<input type="checkbox" name="formCheckbox" value="Yes"/>';
?>
<div class="form-group">
<div class="col-sm-10 col-sm-offset-2">
<input id="submit" name="submit" type="submit" value="Send" class="btn btn-primary">
</div>
</div>
</form>
<div class="col-sm-10 col-sm-offset-2">
<?php echo $Result; ?>
</div>
</div>
</div>
</div>
<script src="js/jquery.min.js"></script>
<script src="js/bootstrap.min.js"></script>
</body>
</html>