Exclude specific directories using PHP function scandir

The scandir() function returns an array containing files and directories in the specified path.As follows:

Example:

<?php
print_r(scandir('test_directory'));
?>

Output:

Array
(
[0]=>.
[1]=>..
[2]=>1.txt
[3]=>2.txt
)

In most cases, you only need an array of file lists for that directory, as follows:

Array
(
[0]=>1.txt
[1]=>2.txt
)

1 is usually solved by excluding an array item of'. 'or'.':

<?php
functionfind_all_files($dir)
{
    $root = scandir($dir);
    foreach($rootas$value)
    {
        if($value === '.' || $value === '..'){
            continue;
        }
        if(is_file("$dir/$value")){
            $result[] = "$dir/$value";
            continue;
        }
        foreach(find_all_files("$dir/$value")as$value)
        {
            $result[] = $value;
            }
        }
    return$result;
    }
?>

Another method, using array_diff function, eliminates the array that the scandir function executes:

<?php
$directory='/path/to/my/directory';
$scanned_directory=array_diff(scandir($directory),array('..','.'));
?>

Usually code management produces.svn files, or.htaccess files that restrict directory access.So by array_The diff function is more convenient to filter.