Question

我是php新手并试图将文件上传到指定目录。但是当我检查下面给出的条件时：

     if(file_exists($target_dir))//check if file already exists in uploads folder
    {
    echo "sorry! file already exists";
    $uploadOK=0;
  }

它显示“抱歉！文件已存在”;。但我从C：\ mypictures \中选择我的图像文件，目标目录的路径是C：\ xampp \ htdocs \ uploads。我不知道为什么会这样。如果有人能澄清这一点会很棒。

这是我的upload.php文件的完整代码：

<?php
$target_dir="C:/xampp/htdocs/uploads/";
$target_file=$target_dir.basename($_FILES["fileToUpload"]["name"]);
$uploadOK=1;
$ImageFileType=pathinfo($target_file,PATHINFO_EXTENSION);
 if(isset($_POST["submit"]))
   $check=getimagesize($_FILES["fileToUpload"]["tmp_name"]);//check if a file is an image or not
        if($check == true)
         echo "file is an image";
        else
        {
         echo "file is not an image";
         $uploadOK=0;
        }
if(file_exists($target_dir))//check if file already exists in uploads folder
  {
    echo "sorry! file already exists";
    $uploadOK=0;
  } //doubt
if(filesize($target_file>500000))//check if the file is too large 
  {
    echo "file too large";
    $uploadOK=0;
  }
if($ImageFileType!="jpg" && $ImageFileType!="png" && $ImageFileType!="jpeg" && $ImageFileType!="png")//check file type
  {
    echo "file type not supported";
    $uploadOK=0;
  }
if($uploadOK==0)//checking for any errors
  {
    echo "some error occured.";
  }
else{
    if(move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file))
    {
        echo "file uploaded";
    }
    else{
        echo "file not uploaded....there was some error.";
    }
}  


?>

Answer 1

因为您正在检查目录而不是文件。将您的代码更改为

if(file_exists($target_file))//check if file already exists in uploads folder
  {
    echo "sorry! file already exists";
    $uploadOK=0;
  } //do

将文件上载到指定目录时出错

1 个答案: