使用operator ++進行while循環僅計數一次

Question

我通過了https://stackoverflow.com/a/44553006/8719001的代碼

但無法弄清楚為什么多次上傳同一文件“ test.jpg”時，它只計數一次，創建“ test-1.jpg”卻沒有，例如。 test-2.jpg，test-3.jpg。

有人可以發現問題並提供幫助嗎？

 $keepFilesSeperator = "-";
 $keepFilesNumberStart = 1;

if (isset($_FILES['upload'])) {
        // Be careful about all the data that it's sent!!!
        // Check that the user is authenticated, that the file isn't too big,
        // that it matches the kind of allowed resources...
        $name = $_FILES['upload']['name'];
        //If overwriteFiles is true, files will be overwritten automatically.
        if(!$overwriteFiles)
        {
    $ext = ".".pathinfo($name, PATHINFO_EXTENSION);
            // Check if file exists, if it does loop through numbers until it doesn't.
            // reassign name at the end, if it does exist.
    if(file_exists($basePath.$name))
            {
                    $operator = $keepFilesNumberStart;

                //loop until file does not exist, every loop changes the operator to a different value.
            while(file_exists($basePath.$name.$keepFilesSeperator.$operator))
                {
                        $operator++;
               }
               $name = rtrim($name, $ext).$keepFilesSeperator.$operator.$ext;
            }
        }
        move_uploaded_file($_FILES["upload"]["tmp_name"], $basePath . $name);
    }

Answer 1

您的while循環條件有問題

while( file_exists( $basePath.$name.$keepFilesSeperator.$operator ) )

$ name變量仍然包含文件的全名，在本例中為test.jpg ，您正在測試/home/test.jpg-1之類的值，因此最終while循環永遠不會作為文件test.jpg-1執行。永遠不會存在，這就是為什么您總是在磁盤上獲得test-1.jpg而不是...- 2.jpg或...- 3.jpg的原因