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Correction status：Uncorrected
Teacher's comments：
Collection
Collection
<?php
// 获取通过url发送的变量参数
// 键名=>变量名, 值=>变量值
function _get($str){
$val = !empty($_GET[$str]) ? $_GET[$str] : null;
return $val;
}
?>
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>get</title>
</head>
<body>
<form action="" method="get">
<label for="email">邮箱:</label>
<input type="email" id="email" name="email" value="<?=_get('email')?:''?>">
<label for="password">密码:</label>
<input type="password" id="password" name="password" value="<?=_get('password')?:''?>">
<button>登录</button>
</form>
</body>
</html>
<?php
// 获取通过请求头发送的变量参数
// 键名=>变量名, 值=>变量值
echo '<pre>';
print_r($_GET);
?>点击 "运行实例" 按钮查看在线实例
<?php
// 获取通过请求头发送的变量参数
// 键名=>变量名, 值=>变量值
function _post($str){
$val = !empty($_POST[$str]) ? $_POST[$str] : null;
return $val;
}
?>
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>get</title>
</head>
<body>
<form action="" method="post">
<label for="email">邮箱:</label>
<input type="email" id="email" name="email" value="<?=_post('email')?:''?>">
<label for="password">密码:</label>
<input type="password" id="password" name="password" value="<?=_post('password')?:''?>">
<button>登录</button>
</form>
</body>
</html>
<?php
echo '<pre>';
print_r($_POST);
?>点击 "运行实例" 按钮查看在线实例
