Question

我采用了来自https://stackoverflow.com/a/44553006/8719001

的代码

但无法确定上传相同文件的原因＆＃34; test.jpg＆＃34;好几次它只算一次，创造了＆＃34; test-1.jpg＆＃34;但不是更多，即。 test-2.jpg，test-3.jpg。

有人可以发现问题，请帮忙吗？

 $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

你的while循环条件有问题

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

$ name 变量仍然包含文件的全名，在本例中为 test.jpg ，您正在测试类似 / home / test的值.jpg-1 所以最后while循环永远不会执行，因为文件 test.jpg-1 从不存在，这就是为什么你总是得到 test-1.jpg 在磁盘而不是 ...- 2.jpg 或 ...- 3.jpg

while while with operator ++只计算一次

1 个答案: