PHP 文件上传 - 重命名文件

Question

以www.w3schools.com/php/php_file_upload.asp为基础，我想上传一个文件，但更改了文件名以在我的表单中包含一个字段，加上特定的测试。

我该怎么做？ （我对此很陌生）

EG。正在上传的文件名 = TestFile.jpeg

我希望文件重命名为 [first_name 表单中的字段]_invoice.jpeg

这是我的表格：

 <form action="upload.php" method="post" enctype="multipart/form-data">
First name
<input type="text" name="first_name" id="first_name" />

  Select image to upload:
  <input type="file" name="fileToUpload" id="fileToUpload">
  <input type="submit" value="Upload Image" name="submit">
</form>

这是我的 PHP:

    <?php
$target_dir = "uploads/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
$uploadOk = 1;
$imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));

// 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 != "pdf"  && $imageFileType != "txt"  && $imageFileType != "png" && $imageFileType != "jpeg" && $imageFileType != "gif" ) {
  echo "Sorry, only PDF, TXT, 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 ". htmlspecialchars( basename( $_FILES["fileToUpload"]["name"])). " has been uploaded.";
  } else {
    echo "Sorry, there was an error uploading your file.";
  }
}
?>

Answer 1

像这样更改代码中的第一行：

<?php
$target_dir = "uploads/";
$imageFileType = strtolower(pathinfo($_FILES["fileToUpload"]["name"],PATHINFO_EXTENSION));
$target_file = $target_dir . trim($_POST['your_name']) . '_invoice.' . $imageFileType;
$uploadOk = 1;

但是您还应该在表单中包含 <input type="text" name="your_name">，因为根据您的代码和 the article，没有文本输入。

PHP 文件上传 - 重命名文件

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