PHP计算目录AND子目录函数中的总文件数

Question

我需要在指定的目录中获得JPG文件的总数,包括它的所有子目录.没有子目录.

结构如下:

dir1/
2 files  
   subdir 1/
       8 files

总dir1 = 10个文件

dir2/ 
    5 files  
    subdir 1/ 
        2 files  
    subdir 2/ 
        8 files

总dir2 = 15个文件

我有这个功能,它不能正常工作,因为它只计算最后一个子目录中的文件,总数是实际文件数量的2倍.(如果我在最后一个子目录中有40个文件,则输出80)

public function count_files($path) { 
global $file_count;

$file_count = 0;
$dir = opendir($path);

if (!$dir) return -1;
while ($file = readdir($dir)) :
    if ($file == '.' || $file == '..') continue;
    if (is_dir($path . $file)) :
        $file_count += $this->count_files($path . "/" . $file);
    else :
        $file_count++;
    endif;
endwhile;

closedir($dir);
return $file_count;
}

Answer 1

你可以使用RecursiveDirectoryIterator这样做

<?php
function scan_dir($path){
    $ite=new RecursiveDirectoryIterator($path);

    $bytestotal=0;
    $nbfiles=0;
    foreach (new RecursiveIteratorIterator($ite) as $filename=>$cur) {
        $filesize=$cur->getSize();
        $bytestotal+=$filesize;
        $nbfiles++;
        $files[] = $filename;
    }

    $bytestotal=number_format($bytestotal);

    return array('total_files'=>$nbfiles,'total_size'=>$bytestotal,'files'=>$files);
}

$files = scan_dir('./');

echo "Total: {$files['total_files']} files, {$files['total_size']} bytes\n";
//Total: 1195 files, 357,374,878 bytes 
?>

Answer 2

为了它的乐趣,我把它鞭打在一起:

class FileFinder
{
    private $onFound;

    private function __construct($path, $onFound, $maxDepth)
    {
        // onFound gets called at every file found
        $this->onFound = $onFound;
        // start iterating immediately
        $this->iterate($path, $maxDepth);
    }

    private function iterate($path, $maxDepth)
    {
        $d = opendir($path);
        while ($e = readdir($d)) {
            // skip the special folders
            if ($e == '.' || $e == '..') { continue; }
            $absPath = "$path/$e";
            if (is_dir($absPath)) {
                // check $maxDepth first before entering next recursion
                if ($maxDepth != 0) {
                    // reduce maximum depth for next iteration
                    $this->iterate($absPath, $maxDepth - 1);
                }
            } else {
                // regular file found, call the found handler
                call_user_func_array($this->onFound, array($absPath));
            }
        }
        closedir($d);
    }

    // helper function to instantiate one finder object
    // return value is not very important though, because all methods are private
    public static function find($path, $onFound, $maxDepth = 0)
    {
        return new self($path, $onFound, $maxDepth);
    }
}

// start finding files (maximum depth is one folder down) 
$count = $bytes = 0;
FileFinder::find('.', function($file) use (&$count, &$bytes) {
    // the closure updates count and bytes so far
    ++$count;
    $bytes += filesize($file);
}, 1);

echo "Nr files: $count; bytes used: $bytes\n";

您传递基本路径,找到处理程序和最大目录深度(-1表示禁用).找到的处理程序是您在外部定义的函数,它将从find()函数中给出的路径相对传递路径名.

希望它有意义并帮助你:)