PHP Classes

File: example/benchmarkWriter

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File: example/benchmarkWriter
Role: Auxiliary data
Content type: text/plain
Description: Auxiliary data
Class: CSV Component for PHP
Reader and writer for CSV files
Author: By
Last change: replaced deprecated array syntax >>array()<< with >>[]<<
Date: 5 years ago
Size: 3,165 bytes
 

Contents

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#!/usr/bin/env php <?php /** * @author stev leibelt <artodeto@bazzline.net> * @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; }