File: example/benchmarkWriter

#!/usr/bin/env php
<?php
/**
 * @author stev leibelt <[email protected]>
 * @since 2015-06-24
 */

require_once __DIR__ . '/../vendor/autoload.php';

$factory    = new \Net\Bazzline\Component\Csv\Writer\WriterFactory();
$writer     = $factory->create();

try {
    $usage = 'usage: ' . basename(__FILE__) . ' <number of columns per line> <number of lines> [<path/to/csv>]';

    if ($argc < 3) {
        throw new Exception('invalid number of parameters provided');
    }
    array_shift($argv);
    end($argv);

    $path = (is_file(current($argv))) ? array_pop($argv) : __DIR__ . '/file/benchmark.csv';
    reset($argv);

    $writer->setPath($path);

    $arrayOfLine            = [];
    $characters             = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 ';
    $numberOfCharacters     = strlen($characters);
    $numberOfCharacterIndex = $numberOfCharacters - 1;
    $numberOfColumnsPerLine = array_shift($argv);
    $numberOfLines          = array_shift($argv);

    $memoryUsageBeforeInMegabytes       = (memory_get_usage(true) / 1048576);
    $memoryPeakUsageBeforeInMegabytes   = (memory_get_peak_usage(true) / 1048576);
    $timeBeforeInMicroSeconds           = microtime(true);

    for ($lineIterator = 0; $lineIterator < $numberOfLines; ++$lineIterator) {
        $columns = [];

        for ($columnIterator = 0; $columnIterator < $numberOfColumnsPerLine; ++$columnIterator) {
            $column                         = '';
            $numberOfCharactersPerColumn    = mt_rand(1, $numberOfCharacters);

            for ($characterIterator = 0; $characterIterator < $numberOfCharactersPerColumn; ++$characterIterator) {
                $index = mt_rand(0, $numberOfCharacterIndex);
                $column .= $characters[$index];
            }

            $columns[] = $column;
        }

        $line = implode(',', $columns);

        if ($writer($line) === false) {
            throw new Exception('could not write line "' . $line . '" to file "' . $path . '"');
        } else {
            if (($lineIterator % 100) === 0) {
                echo '.';
            }
        }
    }
    echo PHP_EOL;

    $memoryUsageAfterInMegabytes        = (memory_get_usage(true) / 1048576);
    $memoryPeakUsageAfterInMegabytes    = (memory_get_peak_usage(true) / 1048576);
    $timeAfterInMicroSeconds            = microtime(true);

    echo 'file path: ' . realpath($path) . PHP_EOL;
    echo 'number of lines written: ' . $lineIterator . PHP_EOL;
    echo 'runtime: ' . ceil($timeAfterInMicroSeconds - $timeBeforeInMicroSeconds) . ' seconds' . PHP_EOL;
    echo 'memory usage' . PHP_EOL;
    echo '    before writing: ' . $memoryUsageBeforeInMegabytes . ' MB' . PHP_EOL;
    echo '    after writing: ' . $memoryUsageAfterInMegabytes . ' MB' . PHP_EOL;
    echo 'memory peak usage' . PHP_EOL;
    echo '    before writing: ' . $memoryPeakUsageBeforeInMegabytes . ' MB' . PHP_EOL;
    echo '    after writing: ' . $memoryPeakUsageAfterInMegabytes . ' MB' . PHP_EOL;
} catch (Exception $exception) {
    echo $usage . PHP_EOL;
    echo '----------------' . PHP_EOL;
    echo $exception->getMessage() . PHP_EOL;
    return 1;
}