Question

我收到以下错误：

注意：未定义的索引：第5行的C：\ wamp \ www_upload \ index.php中的图像

注意：未定义的索引：第7行的C：\ wamp \ www_upload \ index.php中的图像

以下是代码：

<?php

$target_path = "images/";

$target_path = $target_path . basename( $_FILES['theimage']['name']);

if(move_uploaded_file($_FILES['theimage']['tmp_name'], $target_path)) {
echo "<p>The image ".  basename( $_FILES['theimage']['name']). " has been uploaded</p>";
} else{
echo "<p>There was an error uploading the image, please try again!</p>";
}  

?>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title></title>
<meta name="" content="">
</head>
<body>

<form enctype="multipart/form-data" action="index.php" method="POST">
<fieldset>
<input name="theimage" type="file" />
<input type="submit" value="Upload" />
</fieldset>
</form>



</body>
</html>

有关如何解决此问题的任何想法吗？

Answer 1

检查以确保在尝试对其进行任何操作之前，您已在$_FILES或$_POST中获取数据：

<?php
    if(isset($_FILES)) {        // if(isset($_POST)) 
                                // would work as well
        $target_path = "images/";
        $target_path = $target_path . basename( $_FILES['theimage']['name']);
        if(move_uploaded_file($_FILES['theimage']['tmp_name'], $target_path)) {
            echo "<p>The image ".  basename( $_FILES['theimage']['name']). 
                " has been uploaded</p>";
        } else {
            echo "<p>There was an error uploading the image!</p>";
        } 
    } 
?>

Answer 2

<?php
if(!empty($_FILES['theimage'])) {
    // YOUR CURRENT PHP CODE HERE
?>

问题是上传脚本正在执行，即使没有发布任何内容（例如第一次加载页面时）。

Answer 3

将提交按钮更改为：

<input type = 'submit' name = 'theSubmitBtn' value = 'Upload'>

然后，如果检查：

，请将所有PHP代码包装在此处的顶部

if(isset($_POST['theSubmitBtn'])) {

... Your Code ...

}

看看它是否适合您。另外，如果要在生产环境中使用它，还需要添加更多错误检查。

php代码出错（文件上传）

3 个答案: