couchdb bulk operation using geonames database

couchdb-bulk-geoname-db.php

<?php
$filename =  dirname(__FILE__) . '/allCountries.txt';
$file = new SplFileObject($filename ,'r');

$map = array(
    0  => 'id',
    1  => 'name',
    2  => 'asciiName',
    3  => 'alternateNames',
    4  => 'latitude',
    5  => 'longitude',
    6  => 'featureClass',
    7  => 'featureCode',
    8  => 'countryCode',
    9  => 'cc2',
    10 => 'admin1Code',
    11 => 'admin2Code',
    12 => 'admin3Code',
    13 => 'admin4Code',
    14 => 'population',
    15 => 'elevation',
    16 => 'gTopO30',
    17 => 'timezone',
    18 => 'modificationDate'
);

$timeStart = microtime(true);

$ch = curl_init('http://couchdb.local:5984/geonames_bulk/_bulk_docs');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));

$index = 0;
$data = array();
while (!$file->eof()) {
    $document = array_combine($map, $file->fgetcsv("\t"));
    $data["docs"][] = $document;

    if ($index % 100 == 0) {
        $data = json_encode($data);

        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        $returned = curl_exec($ch);

        if (!$returned) {
            exit("NOT RUN");
        } else {
          echo ".";
        }
        $data = array();
    }

    ++$index;
}

$timeEnd = microtime(true);
$timeDiff = $timeEnd - $timeStart;
echo "time taken : {$timeDiff} s";