Split large Excel/Csv file to multiple files on PHP or Javascript

Question

I have excel(file.xls)/csv(file.csv) file that contains/will contain hundreds of thousands of entry, even millions I guess. Is it possible to split this one to multiple file

Answer 1

Quick and dirty way of splitting a CSV file into several CSV files

$inputFile = 'input.csv';
$outputFile = 'output';

$splitSize = 10000;

$in = fopen($inputFile, 'r');

$rowCount = 0;
$fileCount = 1;
while (!feof($in)) {
    if (($rowCount % $splitSize) == 0) {
        if ($rowCount > 0) {
            fclose($out);
        }
        $out = fopen($outputFile . $fileCount++ . '.csv', 'w');
    }
    $data = fgetcsv($in);
    if ($data)
        fputcsv($out, $data);
    $rowCount++;
}

fclose($out);