帶有PHP目錄的RecursiveIterator

Question

我想列出目錄中的目錄和文件，如：

Array(
    [0] => 2014
    [1] => images
    [2] => videos
)

此數組中的所有目錄都位於我的網站的“web_public”目錄中。 但是其中還有一些我不想閱讀的目錄。 完整的web_public是：

2014
images
videos
css
js
... and so on

這是我正在做的但不起作用：

$objects = array();
foreach($dirs_to_read as $dir) {
    $dir = 'web_public/'.$dir;
    $objects = array_merge($objects, new RecursiveDirectoryIterator($dir));                
}   
$objects = new RecursiveIteratorIterator($objects);

Answer 1

從PHP 5開始，您可以使用RecursiveDirectoryIterator來獲取文件數組。 例如：

$path = __DIR__;

$directory = new \RecursiveDirectoryIterator(
    $path,
    RecursiveDirectoryIterator::SKIP_DOTS
    | RecursiveDirectoryIterator::CURRENT_AS_PATHNAME
    | RecursiveDirectoryIterator::KEY_AS_FILENAME
);

$iterator = new \RecursiveIteratorIterator($directory);
$array    = iterator_to_array($iterator);

print_r($array);

輸出類似於：

Array
(
    [demo.php] => /path/tp/demo.php
)

Answer 2

這需要使用AppendIterator 。 用法示例：

$ai = new AppendIterator;
foreach( $dirs_to_read as $dir )
{
    // append RecursiveDirectoryIterator (wrapped in RecursiveIteratorIterator)
    // you need RecursiveIteratorIterator as well,
    // to iterate all depths of the RecursiveDirectoryIterator, in one go
    $ai->append( new RecursiveIteratorIterator(
        new RecursiveDirectoryIterator( 'web_public/' . $dir ),
        RecursiveIteratorIterator::SELF_FIRST
    ) );
}

// iterate the AppendIterator
foreach( $ai as $file )
{
    /* do something with the file (which is an SplFileInfo instance) */
}