PHP code example of ho-nl-fork / psr7-csv-factory

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

ho-nl-fork / psr7-csv-factory example snippets

use Psr\Http\Message\StreamInterface;
use Bakame\Psr7\Adapter\StreamWrapper;

public static StreamWrapper::streamToResource(StreamInterface $stream): resource;
public static StreamWrapper::streamToAppendableResource(StreamInterface $stream): resource;

use Bakame\Psr7\Adapter\StreamWrapper;
use League\Csv\Reader;
use League\Csv\Writer;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Message\ResponseInterface;

final class CsvDelimiterSwitcherAction
{
    public function __construct(
        private string $inputDelimiter,
        private string $outputDelimiter
    ) {
    }

    public function __invoke(ServerRequestInterface $request, ResponseInterface $response): ResponseInterface
    {
        //let's create a CSV Reader object from the submitted file
        $inputCsv = $request->getUploadedFiles()['csv'];
        $reader = Reader::createFromStream(
            StreamWrapper::streamToResource($inputCsv->getStream())
        );
        $reader->setDelimiter($inputDelimiter);
        
        $psr7stream = $response->getBody();
        $psr7stream->write($reader->getInputBOM());
    
        //let's create a CSV Writer object from the response body
        //because we already wrote to the stream we need to have an appendable resource 
        $writer = Writer::createFromStream(
            StreamWrapper::streamToAppendableResource($psr7stream);
        );
        //we convert the delimiter
        $writer->setDelimiter($outputDelimiter);
        $writer->insertAll($reader);
    
        //we add CSV header to enable downloading the converter document
        return $response
            ->withHeader('Content-Type', 'text/csv, charset=utf-8')
            ->withHeader('Content-Transfer-Encoding', 'binary')
            ->withHeader('Content-Description', 'File Transfer')
            ->withHeader('Content-Disposition', 'filename=csv-'.(new DateTimeImmutable())->format('Ymdhis').'.csv')
        ;
    }
}