Convert RAW images to JPG. Actually whatever you want as long as these formats are supported by ImageMagick.

raw_to_jpg.php

<?php
/*

Convert RAW images to JPG. Actually whatever you want as long as these formats are supported by ImageMagick.
https://www.imagemagick.org/script/formats.php

Best used in a terminal to avoid Apache's timeout :)
ex : php raw_to_jpg.php

Folder tree

.
├── convert.php
├── jpg
└── raw

 */

$sourceDirName           = 'raw';
$rawExtention            = 'CR2';
$outputDirName           = 'jpg';
$exportFormat            = 'jpg';
$imageCompressionQuality = 90;
$imageResolution         = array(144,144);


function getDirContents($path) {
    $rii = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path));

    $files = array(); 
    foreach ($rii as $file)
    {
        if (!$file->isDir())
        {
            $files[] = $file->getPathname();
        }
    }

   return $files;
}

function addDir($path)
{
	if( ! file_exists($path) )
	{
		mkdir($path, 0755, true);
	}
}

$raws = getDirContents('./'.$sourceDirName.'/');

foreach ($raws as $raw)
{
	print($raw."\n");
	$file     = pathinfo($raw);
	$path     = str_replace($sourceDirName, $outputDirName, $file['dirname']);
	$filename = $file['filename'];
	$ext      = $file['extension'];
	
	addDir($path);

	if($ext == $rawExtention && file_exists($raw))
	{
		$handle = fopen($raw, 'rb');
		$im = new Imagick();
		$im->readImageFile($handle);
		$im->setImageResolution($imageResolution[0],$imageResolution[1]);
		$im->setImageFormat($exportFormat);
		$im->setImageCompressionQuality($imageCompressionQuality);
		$im->writeImage($path.'/'.$filename.'.'.$exportFormat);
		$im->clear();
		$im->destroy();
	}

	print($path.'/'.$filename.'.'.$exportFormat."\n\n");
}

raw_to_jpg.sh

for file in ./raw/**.nef; do convert "$file" -set colorspace RGB -colorspace sRGB -quality 100% "./jpg/$(basename $file).jpg"; printf "$(basename $file) converted to jpg \n"; done