Collect image file paths Recursively in PHP

Question

I am working on a rather large PHP class that does a lot of things with Image Optimization from the command line, you basically pass the Image path or Folder path program, which has several images inside it. He then runs the files through up to 5 other command line programs that optimize the images.

Below is the part of a loop that collects image paths, if the path is a folder instead of the image path, it will iterate over all the images in the folder and add them to the image array.

So far, everything works for me for single images and images in 1 folder. I would like to modify this section below so that it can recursively go deeper than 1 folder to get image paths.

Can someone show me how I can change this below to accomplish this?

 // Get files if (is_dir($path)) { echo 'the path is a directory, grab images in this directory'; $handle = opendir($path); // FIXME : need to run recursively while(FALSE !== ($file = readdir($handle))) { if(is_dir($path.self::DS.$file)) { continue; } if( ! self::is_image($path.self::DS.$file)) { continue; } $files[] = $path.self::DS.$file; } closedir($handle); }else{ echo 'the path is an Image and NOT a directory'; if(self::is_image($path)) { echo 'assign image Paths to our image array to process = '. $path. '<br><br>'; $files[] = $path; } } if (!count($files)) { throw new NoImageFoundException("Image not found : $path"); } 

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UPDATE

@ Chris's answer made me take a look at Documents, and I found an example that I modified to make it work

 public static function find_recursive_images($path) { $iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path), RecursiveIteratorIterator::CHILD_FIRST); foreach ($iterator as $path) { if ($path->isDir()) { //skip directories continue; } else { $files[] = $path->__toString(); } } return $files; } 

...

 $files = self::find_recursive_images($path); echo '<pre>'; print_r($files); echo '</pre>'; exit(); 

The result is ONLY file names and such a path, which is my final goal, while it works perfectly, but, as always, if there is a better way, I’m all for improvement

 ( [0] => E:\Server\_ImageOptimize\img\testfiles\css3-generator.png [1] => E:\Server\_ImageOptimize\img\testfiles\css3-please.png [2] => E:\Server\_ImageOptimize\img\testfiles\css3-tools-10.png [3] => E:\Server\_ImageOptimize\img\testfiles\fb.jpg [4] => E:\Server\_ImageOptimize\img\testfiles\mysql.gif [5] => E:\Server\_ImageOptimize\img\testfiles\OriginalImages\css3-generator.png [6] => E:\Server\_ImageOptimize\img\testfiles\OriginalImages\css3-please.png [7] => E:\Server\_ImageOptimize\img\testfiles\OriginalImages\css3-tools-10.png [8] => E:\Server\_ImageOptimize\img\testfiles\OriginalImages\fb.jpg [9] => E:\Server\_ImageOptimize\img\testfiles\OriginalImages\mysql.gif [10] => E:\Server\_ImageOptimize\img\testfiles\OriginalImages\support-browsers.png [11] => E:\Server\_ImageOptimize\img\testfiles\support-browsers.png ) 

Answer 1

While andreas' answer probably works, you can also let PHP 5 RecursiveDirectoryIterator do this for you and use a more OOP approach.

Here is a simple example:

 $it = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path)); while ($it->valid()) { if ($it->isDot()) continue; $file = $it->current(); if (self::is_image($file->pathName)) { $files[] = $file->pathName; } $it->next(); } 

Edit:

Alternatively, you can try this (copied from Zend_Translate_Adapter):

 $it = new RecursiveIteratorIterator( new RecursiveRegexIterator( new RecursiveDirectoryIterator($dir, RecursiveDirectoryIterator::KEY_AS_PATHNAME), '/^(?!.*(\.svn|\.cvs)).*$/', RecursiveRegexIterator::MATCH ), RecursiveIteratorIterator::SELF_FIRST ); foreach ($it as $dir => $info) { var_dump($dir); } 

Greetings

Chris

Answer 2

Create a recursive function to read the directory, and then read on if the directory is found during the loop.

Something along the line:

 function r_readdir($path) { static $files = array(); if(!is_dir($path)) { echo 'the path is an Image and NOT a directory'; if(self::is_image($path)) { echo 'assign image Paths to our image array to process = '. $path. '<br><br>'; $files[] = $path; } } else { while(FALSE !== ($file = readdir($handle))) { if(is_dir($path.self::DS.$file)) { r_readdir($path.self::DS.$file); } if( ! self::is_image($path.self::DS.$file)) { continue; } } closedir($handle); } return $files; }