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【PHP】检查文件上传表单是否有选择文件

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  2. if (!is_uploaded_file($HTTP_POST_FILES['upload_file']['tmp_name'])) {
  3. $error = "You must upload a file!";
  4. unlink($HTTP_POST_FILES['upload_file']['tmp_name']);
  5. }
  6. else {
  8. }
  10. ?>