Online PHP editor | perf for pbrjh

@ 2015-10-14T08:01:58Z

<?php
if (PHP_VERSION !== '7.0.0RC4') { exit('done'); }

class Bench {
	protected $functions = [];
	
	public function add($label, \Closure $function) {
		$this->functions[] = [$label, $function];
	}
	
	public function run($count) {
		$function = function () {};
		
		$stats = $this->getStats();
		for ($i = $count; $i--;) $function();
		$stats2 = $this->getStats();
		
		$timeDiff = $stats2[4] - $stats[4];
		
		$this->printStats('Empty run (time subtracted from real runs)', $stats, $stats2, 0);
			
		// TODO: Split runs in pieces and interleave, to avoid bias with first/last runner.
		foreach ($this->functions as list($label, $function)) {
			$stats = $this->getStats();
			
			for ($i = $count; $i--;) $function();
			
			$stats2 = $this->getStats();
			$this->printStats($label, $stats, $stats2, $timeDiff);
		}
	}
	
	protected function getStats() {
		return [memory_get_usage(), memory_get_usage(true), memory_get_peak_usage(), memory_get_peak_usage(true), microtime(1)];
	}
	
	protected function printStats($label, $stats1, $stats2, $timeDiff) {
		list($mem, $memReal, $memPeak, $memRealPeak, $time) = $stats1;
		list($memNew, $memRealNew, $memPeakNew, $memRealPeakNew, $timeNew) = $stats2;
		
		$nl = "\n";
		
		$labelLength = 20;
		$resultsLength = 15;
		echo '<p><b>' . $label . ':</b></p>' . $nl;
		echo '<code><p>' . $nl;
		echo str_pad('Memory', $labelLength, '.', STR_PAD_RIGHT);		
		echo str_pad(number_format(($memNew - $mem) >> 10, 0), $resultsLength, '.', STR_PAD_LEFT) . ' kb<br>' . $nl;
		echo str_pad('Memory Real', $labelLength, '.', STR_PAD_RIGHT);
		echo str_pad(number_format(($memRealNew - $memReal) >> 10, 0), $resultsLength, '.', STR_PAD_LEFT) . ' kb<br>' . $nl;
		echo str_pad('Memory Peak', $labelLength, '.', STR_PAD_RIGHT);
		echo str_pad(number_format(($memPeakNew - $memPeak) >> 10, 0), $resultsLength, '.', STR_PAD_LEFT) . ' kb<br>' . $nl;
		echo str_pad('Memory Real Peak', $labelLength, '.', STR_PAD_RIGHT);
		echo str_pad(number_format(($memRealPeakNew - $memRealPeak) >> 10, 0), $resultsLength, '.', STR_PAD_LEFT) . ' kb<br>' . $nl;
		echo str_pad('Time', $labelLength, '.', STR_PAD_RIGHT);
		echo str_pad(number_format($timeNew - $time - $timeDiff, 5), $resultsLength, '.', STR_PAD_LEFT);
		echo ' sec' . $nl . '</code></p>' . $nl . $nl;
	}
}

$f1 = function ($input) {
    return $input * 10;
};

$f2 = function ($input) {
    return [true, $input * 10];
};

$b = new Bench();
$b->add('single', function () use ($f1) {
    $value = $f1(10);
});
$b->add('tuple', function () use ($f2) {
    list($error, $value) = $f2(10);
});
$b->run(40000);

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
7.2.0	0.000	0.012	19.10
7.1.10	0.006	0.006	18.06
7.1.7	0.008	0.003	17.16
7.1.6	0.004	0.018	19.50
7.1.5	0.014	0.010	16.77
7.1.0	0.003	0.077	22.45
7.0.20	0.004	0.004	16.69
7.0.10	0.010	0.067	20.11
7.0.9	0.020	0.077	19.97
7.0.8	0.003	0.073	20.02
7.0.7	0.027	0.037	20.00
7.0.6	0.010	0.083	19.97
7.0.5	0.020	0.073	20.25
7.0.4	0.010	0.040	20.03
7.0.3	0.003	0.043	20.00
7.0.2	0.007	0.040	20.07
7.0.1	0.007	0.037	19.95
7.0.0	0.010	0.033	20.00
5.6.28	0.003	0.030	21.17
5.6.25	0.003	0.043	20.70
5.6.24	0.003	0.073	20.70
5.6.23	0.003	0.070	20.76
5.6.22	0.007	0.080	20.66
5.6.21	0.013	0.077	20.59
5.6.20	0.007	0.043	21.06
5.6.19	0.007	0.040	21.15
5.6.18	0.003	0.043	21.09
5.6.17	0.003	0.043	21.09
5.6.16	0.000	0.040	20.98
5.6.15	0.003	0.037	21.14
5.6.14	0.003	0.037	21.17
5.6.13	0.003	0.040	21.11
5.6.12	0.003	0.037	21.06
5.6.11	0.003	0.040	21.09
5.6.10	0.000	0.040	21.07
5.6.9	0.007	0.037	20.96
5.6.8	0.003	0.033	20.46
5.6.7	0.000	0.037	20.50
5.6.6	0.003	0.033	20.43
5.6.5	0.007	0.033	20.45
5.6.4	0.003	0.040	20.35
5.6.3	0.010	0.027	20.42
5.6.2	0.003	0.033	20.39
5.6.1	0.007	0.040	20.35
5.6.0	0.013	0.053	20.39
5.5.38	0.013	0.077	20.58
5.5.37	0.010	0.060	20.40
5.5.36	0.007	0.063	20.38
5.5.35	0.007	0.080	20.38
5.5.34	0.020	0.023	20.80
5.5.33	0.013	0.030	20.87
5.5.32	0.007	0.040	20.96
5.5.31	0.000	0.047	20.96
5.5.30	0.007	0.037	20.91
5.5.29	0.003	0.043	20.81
5.5.28	0.003	0.037	20.76
5.5.27	0.007	0.033	20.91
5.5.26	0.010	0.030	20.95
5.5.25	0.000	0.040	20.77
5.5.24	0.003	0.033	20.20
5.5.23	0.000	0.043	20.25
5.5.22	0.003	0.037	20.31
5.5.21	0.007	0.030	20.28
5.5.20	0.003	0.033	20.22
5.5.19	0.010	0.027	20.26
5.5.18	0.000	0.037	20.27
5.5.16	0.000	0.050	20.30
5.5.15	0.010	0.053	20.21
5.5.14	0.007	0.040	20.27
5.5.13	0.013	0.070	20.25
5.5.12	0.017	0.057	20.25
5.5.11	0.010	0.043	20.17
5.5.10	0.010	0.063	20.20
5.5.9	0.003	0.037	20.20
5.5.8	0.003	0.047	19.98
5.5.7	0.007	0.040	20.09
5.5.6	0.013	0.063	20.07
5.5.5	0.003	0.083	20.18
5.5.4	0.007	0.043	20.07
5.5.3	0.007	0.080	20.11
5.5.2	0.007	0.050	20.11
5.5.1	0.007	0.077	20.13
5.5.0	0.010	0.077	20.16
5.4.45	0.013	0.040	19.52
5.4.44	0.007	0.030	19.45
5.4.43	0.000	0.040	19.42
5.4.42	0.013	0.030	19.41
5.4.41	0.003	0.033	19.23
5.4.40	0.007	0.030	19.21
5.4.39	0.007	0.030	19.10
5.4.38	0.000	0.043	19.09
5.4.37	0.003	0.037	19.13
5.4.36	0.013	0.023	19.05
5.4.35	0.003	0.037	19.18
5.4.34	0.010	0.030	19.18
5.4.32	0.007	0.080	18.91
5.4.31	0.003	0.037	18.95
5.4.30	0.007	0.033	18.90
5.4.29	0.010	0.057	19.16
5.4.28	0.007	0.073	19.12
5.4.27	0.003	0.067	19.04
5.4.26	0.013	0.063	19.13
5.4.25	0.007	0.063	18.87
5.4.24	0.010	0.053	19.20
5.4.23	0.003	0.070	19.12
5.4.22	0.003	0.037	19.02
5.4.21	0.013	0.060	19.04
5.4.20	0.003	0.053	19.02
5.4.19	0.000	0.083	19.02
5.4.18	0.013	0.070	19.20
5.4.17	0.007	0.077	19.17
5.4.16	0.003	0.037	19.02
5.4.15	0.013	0.070	18.89
5.4.14	0.010	0.033	16.49
5.4.13	0.000	0.073	16.40
5.4.12	0.007	0.033	16.32
5.4.11	0.003	0.037	16.52
5.4.10	0.007	0.030	16.32
5.4.9	0.003	0.077	16.41
5.4.8	0.003	0.047	16.55
5.4.7	0.010	0.067	16.40
5.4.6	0.003	0.033	16.41
5.4.5	0.010	0.070	16.37
5.4.4	0.007	0.050	16.54
5.4.3	0.010	0.067	16.45
5.4.2	0.003	0.057	16.46
5.4.1	0.000	0.037	16.46
5.4.0	0.013	0.027	15.85

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