如何将上传文件的 $target_dir 更改为绝对路径 - 网站根目录?

Question

这是一个WordPress插件，可以上传图像。现在，图像上传到：http://localhost/wp-content/2018/10/image.png。我希望它们存储在网站的根目录中。在主文件夹中，其中有wp内容，wp-admin和其他文件等文件夹。

这是将文件上传到上面指定的目标的代码。

<div class="wrap">
<h2>Upload files</h2>
<form action="" method="post" enctype="multipart/form-data">
Select file to upload (Supported files: .rar, .zip, .txt, .xml):
<input type="file" name="fileToUpload" id="fileToUpload">
<input type="submit" value="Upload Image" name="submit">
</form>
</div>
<?php
// Check if image file is a actual image or fake image
if(isset($_POST["submit"])) {
$target_dir = wp_upload_dir();
$target_file = $target_dir['path'] . '/' . 
basename($_FILES["fileToUpload"]["name"]);
$uploadOk = 1;
$imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));
$check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
if($check !== false) {
echo "File is an image - " . $check["mime"] . ".";
$uploadOk = 1;
} else {
echo "File is not an image.";
$uploadOk = 0;
}
// Check if file already exists
if (file_exists($target_file)) {
echo "Sorry, file already exists.";
$uploadOk = 0;
}
// Check file size
if ($_FILES["fileToUpload"]["size"] > 500000) {
echo "Sorry, your file is too large.";
$uploadOk = 0;
}
// Allow certain file formats
if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType 
!= 
"jpeg"
&& $imageFileType != "gif" ) {
echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
$uploadOk = 0;
}
// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) {
echo "Sorry, your file was not uploaded.";
// if everything is ok, try to upload file
} else {
if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], 
$target_file)) {
echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " 
has been 
uploaded.";
} else {
echo "Sorry, there was an error uploading your file.";
}
}
}

}

它应该是这样的：/首页/用户/public_html/或/用户/用户名/站点/wp/或类似的东西，但我不知道如何实现它。

Answer 1

您需要添加此函数才能获取根路径get_home_path()。

更改此行

$target_file = $target_dir['path'] . '/' . basename($_FILES["fileToUpload"]["name"]);

与下面

$target_file = get_home_path() . '/' . basename($_FILES["fileToUpload"]["name"]);