PHP高效遍历文件夹的方法 http://www.oschina.net/question/260395_162648

file_list.php

<?php
//方法1 递归
function file_list($path)
{
    $result = array();
    if (is_dir($path) && $handle = opendir($path)) {
        while (FALSE !== ($file = readdir($handle))) {
            if ($file == '.' || $file == '..') continue 1;
            $real_path = str_replace(DIRECTORY_SEPARATOR.DIRECTORY_SEPARATOR, DIRECTORY_SEPARATOR, $path.DIRECTORY_SEPARATOR.$file); //realpath($path.DIRECTORY_SEPARATOR.$file);//得到当前文件的全称路径
            $result[] = $real_path
            if (is_dir($real_path)) 
                $result = array_merge($result, file_list($real_path));
 
             
        }
        closedir($handle);  
    }
    return $result;
}
 
//方法二,队列
function file_list($path)
{
    $result = array();
    $queue = array($path);
    while($data = each($queue))
    { //3
        $path = $data['value'];
        if (is_dir($path) && $handle = opendir($path)) 
        {
            while (FALSE !== ($file = readdir($handle))) 
            { //2
                if ($file == '.' || $file == '..') continue 1;
                $real_path = str_replace(DIRECTORY_SEPARATOR.DIRECTORY_SEPARATOR, DIRECTORY_SEPARATOR, $path.DIRECTORY_SEPARATOR.$file);
                $result[] = $real_path;
                if (is_dir($real_path))
                    $queue[] = $real_path;
            }
        }
        closedir($handle);
    }
     
    return $result;