前端页面
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<form action="server01.php" method="get"> <!--OR POST-->
Name: <input type="text" name="name">
<input type="submit">
</form>
</body>
</html>
后台处理程序
<?php
if ($_GET["name"] && isset($_GET["name"])) { //The name is "" or null || no name input
echo "name is: " .$_GET["name"] ."<br/>";
} else {
echo "no name!.<br/>";
}
?>
运行结果：
