php loop folder get the file names and size

问题

I want make a loop of my fold, get all the files and make a judge, print all the files name witch size are less than 10kb. But I get nothing from this code (no php error hint, just 0 result, and I am sure there has 10 files at lest < 10kb), where is the problem? Thanks.

$folder = dirname('__FILE__')."/../images/*";
foreach(glob($folder) as files){
 $size = filesize(files);
 if($size<10240){
  echo files.'<br />';
 }
}

回答1:

I think there's a typo, because

dirname('__FILE__')

should be (without quotes)

dirname(__FILE__)

and also, your variable files doesn't have a dollar sign

$size = filesize($files);

and also here echo $files

That's it, it should fix your problem

回答2:

1. __FILE__ is a magic constant, therefore you cannot wrap it in quotes:

   $folder = dirname(__FILE__)."/../images/*";
   

2. You missed a $ in files:

   $size = filesize($files);
   // and
   echo $files.'<br />';
   

回答3:

Are you sure

$folder = dirname('__FILE__')."/../images/*";

is valid? do you mean

dirname(__FILE__)

来源：https://stackoverflow.com/questions/8639622/php-loop-folder-get-the-file-names-and-size