How to create directory and text file and write content in file in media folder programmatically in Magento 2?

Question

I tried to create directory and file and then put content in file programmatically but it does not work. Here is my code in sample.phtml

<?php
$om = \Magento\Framework\App\ObjectManager::getInstance();

    /** @var \Magento\Framework\Filesystem $filesystem */
    $filesystem = $om->get('Magento\Framework\Filesystem');
    $directoryList = $om->get('Magento\Framework\App\Filesystem\DirectoryList');
    /** @var \Magento\Framework\Filesystem\Directory\WriteInterface|\Magento\Framework\Filesystem\Directory\Write $writer */
    $media_url = getMediaBaseUrl();

    $writer = $filesystem->getDirectoryWrite($media_url."module1/");
    /** @var \Magento\Framework\Filesystem\File\WriteInterface|\Magento\Framework\Filesystem\File\Write $file */
    $contents = "ddddddddddddddddddddddddddd";
    $relativeFileName = "sample.txt";
    $file = $writer->openFile($relativeFileName, 'w');

    try {
        $file->lock();
        try {
            $file->write($contents);
        }
        finally {
            $file->unlock();
        }
    }
    finally {
        $file->close();
    }

function getMediaBaseUrl() {
    /** @var \Magento\Framework\ObjectManagerInterface $om */
    $om = \Magento\Framework\App\ObjectManager::getInstance();
    /** @var \Magento\Store\Model\StoreManagerInterface $storeManager */
    $storeManager = $om->get('Magento\Store\Model\StoreManagerInterface');
    /** @var \Magento\Store\Api\Data\StoreInterface|\Magento\Store\Model\Store $currentStore */
    $currentStore = $storeManager->getStore();
    return $currentStore->getBaseUrl(\Magento\Framework\UrlInterface::URL_TYPE_MEDIA);
}
?>

Answer 1

Finally, I got a solution for creating files and contents programmatically in Magento 2.

Here is a code

<?php
    try {
        $om = \Magento\Framework\App\ObjectManager::getInstance();
        $filesystem = $om->get('Magento\Framework\Filesystem');
        $directoryList = $om->get('Magento\Framework\App\Filesystem\DirectoryList');
        $media = $filesystem->getDirectoryWrite($directoryList::MEDIA);
        $contents = "ddddddddddddddddddddddddddd";
        $media->writeFile("module1/sample.txt",$contents);
    } catch(Exception $e) {
        echo $e->getMessage();
    }
?>

Answer 2

Url and directory are two different things

You are using

$currentStore->getBaseUrl(\Magento\Framework\UrlInterface::URL_TYPE_MEDIA)

You have to use

$mediaPath=$filesystem->getDirectoryRead(\Magento\Framework\App\Filesystem\DirectoryList::MEDIA)->getAbsolutePath();
$writer = $filesystem->getDirectoryWrite(mediaPath."module1".DS);

instead of

$writer = $filesystem->getDirectoryWrite($media_url."module1/");