benchmark_php

#!/usr/bin/php
<?php
/*
	benchmark_php
	Dirty and simple PHP benchmark script.

	https://github.com/TomaszGasior/benchmark_php
*/


// Prepare functions for output purposes.

function print_message($text = '', $symbol = true)
{
	echo ($text and $symbol) ? "\033[1;91;5m»\033[0m " : '', $text, PHP_EOL;
}

function print_table_row($text, $start_new_line = false, $bold = false)
{
	echo ($start_new_line) ? PHP_EOL : " \033[2;5m|\033[0m ";
	if ($bold) {
		echo "\033[32m\033[1m";
	}
	echo str_pad(substr($text, 0, 15), 15, ' ', STR_PAD_BOTH);
	if ($bold) {
		echo "\033[0m";
	}
}


// Set variables with file names, config and results.

$config__full_repeats    = 5;
$config__loop_iterations = 10000;

$tmpfile__code = '/tmp/benchphp_code_' . uniqid();
$tmpfile__time = '/tmp/benchphp_time_' . uniqid();

$files_and_results = [];

define('_PHP_INTERPRETER_PATH', getenv('PHP_PATH') ? getenv('PHP_PATH') : PHP_BINARY);


// Print output header.

if (PHP_SAPI != 'cli') {
	exit('This script can be ran from command line.');
}

print_message('Simple PHP benchmark  —  (c) Tomasz Gąsior  2017-09-28', false);


// Get program arguments — prepare result array and check file existence.

foreach ($argv as $key => $value) {
	if ($key == 0) {
		continue;
	}

	// Loop configuration.
	if ($key == 1 and is_numeric($value)) {
		$config__loop_iterations = (int)$value;
		if ($config__loop_iterations < 1 or $config__loop_iterations > 100000000000) {
			print_message('Loop iterations value cannot be less than 1 or greater than 100 000 000 000.');
			exit;
		}
		continue;
	}
	if ($key == 2 and is_numeric($value)) {
		$config__full_repeats = (int)$value;
		if ($config__full_repeats < 1) {
			print_message('Full repeats value cannot be less than 1.');
			exit;
		}
		continue;
	}

	// File names.
	if (!file_exists($value)) {
		print_message('File "' . $value . '" does not exists.');
		exit;
	}
	$files_and_results[$value] = [];
}


// Show usage info if script files are not specified.

if (empty($files_and_results)) {
	print_message('Usage: ' . basename(__FILE__) . ' [loops] [full repeats] script1.php script2.php …');
	exit;
}


// Register shutdown function that removes temporary files.

register_shutdown_function(function() use ($tmpfile__code, $tmpfile__time){
	@unlink($tmpfile__code); @unlink($tmpfile__time);
});


// Print header of results table.

print_message(
	'Running loop with '    . number_format($config__loop_iterations, 0, null, ' ') .
	' iterations repeated ' . number_format($config__full_repeats,    0, null, ' ') . ' times' .
	(_PHP_INTERPRETER_PATH != PHP_BINARY ? ' using ' . _PHP_INTERPRETER_PATH : '')  . '.'
);

print_table_row('', true);
foreach (array_keys($files_and_results) as $filename) {
	print_table_row(basename($filename), false, true);
}


// Prepare benchmark script template and benchmark error function.

$tmp_script_template = <<< 'EOL'
	<?php for ($__benchmark__=0; $__benchmark__ < %d; $__benchmark__++) {
		%s
	} file_put_contents('%s', microtime(1)-$_SERVER['REQUEST_TIME_FLOAT']);
EOL;

$benchmark_error = function($message, $error){
	print_message();
	print_message();
	print_message($message);
	print_message(mb_strstr($error, "\n", true), false);
	print_message();
	exit;
};


// Do full repeats.

for ($full_repeat_number=1; $full_repeat_number <= $config__full_repeats; $full_repeat_number++)
{
	print_table_row($full_repeat_number . ' repeat:', true);

	// Run code from each file and output execution time.
	foreach ($files_and_results as $filename => &$results)
	{
		$tested_code = trim(str_replace(['<?php', '?>'], null, file_get_contents($filename)));
		$tmp_script  = sprintf($tmp_script_template, $config__loop_iterations, $tested_code, $tmpfile__time);

		file_put_contents($tmpfile__code, $tmp_script);

		if ($syntaxError  = shell_exec(_PHP_INTERPRETER_PATH . ' -l ' . $tmpfile__code . ' 2>&1 >/dev/null')) {
			$benchmark_error('Tested script "' . $filename . '" has syntax error!', $syntaxError);
		}

		if ($executeError = shell_exec(_PHP_INTERPRETER_PATH .   ' '  . $tmpfile__code . ' 2>&1 >/dev/null')) {
			$benchmark_error('Tested script "' . $filename . '" interrupted with error!', $executeError);
		}

		$this_result = round(str_replace(',', '.', file_get_contents($tmpfile__time)), 5);
		$results[]   = $this_result;
		print_table_row(number_format($this_result, 5));
	}
	unset($results);
}


// Print last row of table with average times.

print_table_row(' AVERAGE:', true, true);

foreach ($files_and_results as $results) {
	$average = round(array_sum($results) / count($results), 5);
	print_table_row(number_format($average, 5), false, true);
}

print_message();
print_message();