Question

我使用的代码显示了我目录中的所有文件夹和子文件夹。

我有一个简单的问题..某些结果是重复的或重复的，我不想显示它。

我该怎么做？

<?php
    $dir = 'apps/';
    $result = array();

    if (is_dir($dir)) {
            $iterator = new RecursiveDirectoryIterator($dir);
            foreach (new RecursiveIteratorIterator($iterator, RecursiveIteratorIterator::CHILD_FIRST) as $file) {                    
                if (!$file->isFile()) {
                    $result = $file->getPath()."<br>";
                    echo $result;
                }
            }
    }
?>

Answer 1

试试这个

<?php
    $dir = 'apps/';
    $result = array();

    if (is_dir($dir)) {
            $iterator = new RecursiveDirectoryIterator($dir);
            foreach (new RecursiveIteratorIterator($iterator, RecursiveIteratorIterator::CHILD_FIRST) as $file) {                    
                if (!$file->isFile()) {
                    $path = $file->getPath();
                    if(in_array($path, $result))  {
                        continue ;
                    }
                    $result = $path."<br>";
                    echo $result;
                }
            }
    }
?>

Answer 2

您可以使用哈希数组来检查列表中是否已有路径

<?php
    $dir = 'apps/';
    $result = array();
    $hash=array();

    if (is_dir($dir)) {
            $iterator = new RecursiveDirectoryIterator($dir);
            foreach (new RecursiveIteratorIterator($iterator, RecursiveIteratorIterator::CHILD_FIRST) as $file) {                    
                if (!$file->isFile()) {
                    $path = $file->getPath();
                    if(isset($hash[$path]))  {
                        continue ;
                    }
                     $hash[$path]=1;
                    $result[] = $path;
                    echo $path."<br>";
                }
            }
    }
?>

Answer 3

使用array_unique()

<?php

$dir = 'apps/';
$result = array();

if(is_dir($dir)){

    $iterator = new RecursiveDirectoryIterator($dir);
    foreach(new RecursiveIteratorIterator($iterator, RecursiveIteratorIterator::CHILD_FIRST) as $file){
        if(!$file->isFile()){
            $result[] = $file->getPath();
        }
    }

    $uniqueResult = array_unique($result);
    if(!empty($uniqueResult)){
        foreach($uniqueResult as $v){ // don't use 'for' use 'foreach' here.
            echo $v.'<br>';
        }
    }

}

删除foreach中的重复项

3 个答案: