Can the glob function in PHP accept a series of values as a range?

Currently, I have a significant amount of files stored within a specific directory, and to locate particular files using PHP's glob function. Below is the code snippet that I am currently using:

/* SAMPLE FILE NAME: PR330037JED10220161204.csv */
$dir        = 'Files/Payment/';
$prefix     = 'PR';
$vendorNo   = '330037';
$region     = 'JED';
$date       = '20161204';
$files      = glob($dir.$prefix.$vendorNo.$region."*".$date.".csv");

Although this code functions as intended, I am interested in modifying it to check whether the date component falls within a specified range. What adjustments can be made to the glob expression to achieve this functionality?

phpfunctionfilesearchglob

Answer №1

Iterate through the date range using the code snippet below:

$dir        = 'Files/Payment/';
$prefix     = 'PR';
$vendorNo   = '330037';
$region     = 'JED';

$begin = new DateTime( '2016-12-05' );
$end = new DateTime( '2016-12-10' );

for($i = $begin; $begin <= $end; $i->modify('+1 day')) {
    $date = $i->format("Ymd");
    $files = glob($dir.$prefix.$vendorNo.$region."*".$date.".csv");
}

Answer №2

A useful method to consider is using the GLOB_BRACE FLAG, which is supported by the glob() function.

For instance:

<?php

$directory   = 'Files/Payment/';
$prefix      = 'PR';
$vendorNumber= '330037';
$region      = 'JED';
$date        = '20161204';

$date1 = new DateTime();
$date2 = new DateTime('-1 day');
$date3 = new DateTime('-1 week');
// Include your desired dates here or find a way to automate generating this list based on your requirements
$daysList = $date1->format('Ymd').','.$date2->format('Ymd').','.$date3->format('Ymd');

$pattern    = $directory.$prefix.$vendorNumber.$region."*"."{".$daysList."}".".csv";

$matchingFiles = glob($pattern, GLOB_BRACE);

Answer №3

glob() does not offer support for ranges. To work around this limitation, you can utilize the GLOB_BRACE option in glob to list dates:

$date = '{20161204,20161205,20161206}';
$pattern  = sprintf('%s/%s%s%s*%s.csv',
  $dir, $prefix, $vendorNo, $region, $date);

$files = glob($pattern, GLOB_BRACE);

A more adaptable approach involves iterating through the directory, extracting dates from filenames, and checking if they fall within a specified date range:

$it = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir));

$date_from = 20161204;
$date_to   = 20161206;

$pattern  = '/^' . preg_quote($prefix . $vendorNo . $region, '/') .
  '.*(?P<date>\d{8})\.csv$/';

$it->rewind();
while ($it->valid()) {
  if (!$it->isDot()) {
    $path = $it->key();
    $basename = basename($path);
    if (preg_match($pattern, $basename, $matches) &&
      isset($matches['date']) &&
      $matches['date'] >= $date_from &&
      $matches['date'] <= $date_to)
    {
      echo $basename, PHP_EOL;
    }
  }

  $it->next();
}

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