How to recursively iterate through files in PHP?

Question

I have set up a basic script that is posting an array of paths to find template files inside them; currently it\'s only searching two levels deep and I\'m having some troubles g

Answer 1

Here is working code which scans given directory $dir and all of its sub directories to any levels and return list of html files and folders containing them.

<?php

function find_all_files($dir)
{

    if(!is_dir($dir)) return false;

    $pathinfo = '';


    $root = scandir($dir);

    foreach($root as $value)
    {
        if($value === '.' || $value === '..') {continue;}




        if(is_file("$dir/$value")) {

            $pathinfo = pathinfo($dir.'/'.$value);

            if($pathinfo['extension'] == 'html') {
                $result[]="$dir/$value";


            }

            continue;

        }

        foreach(find_all_files("$dir/$value") as $value)
        {

            $result[]=$value;

        }
    }

    return $result;

}

//call function
$res = find_all_files('physical path to folder'); 

print_r($res);

?>

Answer 2

Universal File search in folder, sub-folder :

function dirToArray($dir,$file_name) {
   $result = array();
   $cdir = scandir($dir);
   foreach ($cdir as $key => $value)
   {
      if (!in_array($value,array(".","..")))
      {
         if (is_dir($dir . DIRECTORY_SEPARATOR . $value))
         {
            $result[$value] = dirToArray($dir . DIRECTORY_SEPARATOR . $value,$file_name);
         }
         else
         {
            if($value == $file_name){
                $result[] = $value; 
            }
         }
      }
   }
   return $result;
}

define('ROOT', dirname(__FILE__));
$file_name = 'template.html';
$tree = dirToArray(ROOT,$file_name);
echo "<pre>".print_r($tree,1)."</pre>";

OUTPUT :

Array
(
    [components] => Array
        (
            [side] => Array
                (
                    [second] => Array
                        (
                            [0] => template.html
                            [third] => Array
                                (
                                    [0] => template.html
                                )

                        )

                    [0] => template.html
                )

            [0] => template.html
        )

    [0] => template.html
)

Answer 3

Alternative of my previous answer :

$dir = 'components';
function getFiles($dir, &$results = array(), $filename = 'template.html'){
    $files = scandir($dir);
    foreach($files as $key => $value){
        $path = realpath($dir.'/'.$value);
        if(!is_dir($path)) {
            if($value == $filename)         
                $results[] = $path;         
        } else if($value != "." && $value != "..") {
            getFiles($path, $results);
        }
    }
    return $results;
}
echo '<pre>'.print_r(getFiles($dir), 1).'</pre>';

OUTPUT :

Array
(
    [0] => /web/practise/php/others/test7/components/side/second/template.html
    [1] => /web/practise/php/others/test7/components/side/second/third/template.html
    [2] => /web/practise/php/others/test7/components/side/template.html
    [3] => /web/practise/php/others/test7/components/template.html
)

Answer 4

Another solution is using Finder component from Symfony. It's tested and proven code. Take a look at it here: http://symfony.com/doc/current/components/finder.html

Answer 5

PHP has the perfect solution for you built in.

Example

// Construct the iterator
$it = new RecursiveDirectoryIterator("/components");

// Loop through files
foreach(new RecursiveIteratorIterator($it) as $file) {
    if ($file->getExtension() == 'html') {
        echo $file;
    }
}

Resources

• DirectoryIterator - Manual

Answer 6

PHP 5 introduces iterators to iterate quickly through many elements.

You can use RecursiveDirectoryIterator to iterate recursively through directories.

You can use RecursiveIteratorIterator on the result to have a flatten view of the result.

You can use RegexIterator on the result to filter based on a regular expression.

 $directory_iterator = new RecursiveDirectoryIterator('.');
 $iterator       = new RecursiveIteratorIterator($directory_iterator);
 $regex_iterator = new RegexIterator($iterator, '/\.php$/');
 $regex_iterator->setFlags(RegexIterator::USE_KEY);
 foreach ($regex_iterator as $file) {
    echo $file->getPathname() . PHP_EOL;
 }

With iterators, there are lot of ways to do the same thing, you can also use a FilterIterator (see the example on the page)

For instance, if you want to select the files modified this week, you can use the following:

  $directory_iterator = new RecursiveDirectoryIterator('.');
  $iterator       = new RecursiveIteratorIterator($directory_iterator);

  class CustomFilterIterator extends FilterIterator {
       function accept() {
            $current=$this->getInnerIterator()->current();
            return ($current->isFile()&&$current->getMTime()>time()-3600*24*7);
       }
  }

  $filter_iterator=new CustomFilterIterator($iterator);
  foreach ($filter_iterator as $file) {
     echo $file->getPathname() . PHP_EOL;
  }