<!DOCTYPE html>
<html lang="en">
<head>
<Meta charset="UTF-8">
<Meta name="viewport" content="width=device-width,initial-scale=1.0">
<Meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<form action="index.PHP" enctype="multipart/form-data" method="post">
<input type="file" name="photo">
<input type="submit" value="提交">
</form>
</body>
</html>
<?PHP
// print_r($_FILES[‘photo‘]);
$file = $_FILES[‘photo‘];
$name = strrchr($file[‘name‘],".");
$name = time() . rand(0,9999) . $name;
$path = "./upload/$name";
move_uploaded_file($file[‘tmp_name‘],$path);
?>
html
<!DOCTYPE html>
<html lang="en">
<head>
<Meta charset="UTF-8">
<Meta name="viewport" content="width=device-width,initial-scale=1.0">
<Meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<form>
<input type="file" name="photo" id="p">
</form>
<script>
// 注册change事件
p.onchange = function () {
// 实例对象
var xhr = new XMLHttpRequest();
xhr.open(‘post‘,‘index.PHP‘);
// 实例对象
var formdata = new FormData();
var filemess = p.files[0];
// 添加到实例对象中
formdata.append(‘photo‘,filemess);
xhr.send(formdata);
}
</script>
</body>
</html>
PHP 不变
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