PHP code example of mhitza / file-enumerators

1. Go to this page and download the library: Download mhitza/file-enumerators library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

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

mhitza / file-enumerators example snippets




use FileEnumerators\Reader\Line as LineReader;

$enumerator = new FileEnumerators\Enumerator('testfile.txt', new LineReader);

foreach($enumerator->enumerate() as $line) {
  echo $line;
}




use FileEnumerators\Reader\CSV as CSVReader;

$enumerator = new FileEnumerators\Enumerator('datafile.csv', new CSVReader);

foreach($enumerator->enumerate() as $row) {
  echo "ROW\n";
  foreach($row as $column) {
    echo "\t$column";
  }
}




use FileEnumerators\Reader\CSV as CSVReader;
use FileEnumerators\Reader\Transformer\CSV as CSVTransformer;

$transformer = new CSVTransformer();
$transformer->onlyColumns(0,2,4)
            ->columnsToNames([
              0 => "title",
              2 => "something-relevant",
              4 => "user-ratings"
            ])
            ->mapColumn(4, function($value){
              return array_sum(array_map('intval', str_split('-', $value)));
            });
  
$reader = new CSVReader(
  CSVReader::COMMA_DELIMITED,
  $transformer
);

$enumerator = new FileEnumerators\Enumerator('datafile.csv', $reader);

foreach($enumerator->enumerate() as $row) {
  printf("%s %s %d",
    $row['title'],
    $row['something-relevant'],
    $row['user-ratings']
  );
}




use FileEnumerators\Reader\CSV as CSVReader;
use FileEnumerators\Reader\Transformer\CSV as CSVTransformer;

$enumerator = new FileEnumerators\Enumerator(
  'datafile.csv',
  new CSVReader(
    CSVReader::COMMA_DELIMITED,
    (new CSVTransformer)
      ->onlyColumns(0,2,4)
      ->columnsToNames([
        0 => "Title",
        2 => "Something relevant",
        4 => "User ratings"
      ])
      ->mapColumn(4, function($value){
        return array_sum(array_map(str_split('-', $value), 'intval'));
      })
  )
);

foreach($enumerator->enumerate() as $row) {
  printf("%s %s %d",
    $row['title'],
    $row['something-relevant'],
    $row['user-ratings']
  );
}




use FileEnumerators\Reader\Directory as DirectoryReader;

$enumerator = new FileEnumerators\Enumerator(new DirectoryReader('.'));

# @var $file \DirectoryIterator
foreach($enumerator->enumerate() as $file) {
  echo $file->getFilename();
}