3v4l.org

run code in 300+ PHP versions simultaneously
<?php function bytesToSize($bytes, $precision = 2) { $symbols = array('B', 'Kb', 'Mb', 'Gb', 'Tb', 'Pb', 'Eb', 'Zb', 'Yb'); $exp = (int)floor(log($bytes) / log(1024)); return sprintf('%.'. $precision .'f '. $symbols[$exp], $bytes / pow(1024, floor($exp))); } function mem() { return bytesToSize(memory_get_usage(true)); } function test($msg, $test) { $t = microtime(true); $test($msg); echo $msg .': <b>'. sprintf('%.6f', microtime(true) - $t) .'</b><br>'; } $array = range(0, 300000); test('foreach', function ($msg) use ($array) { echo $msg . ' before loop mem: '. mem() .'<br>'; foreach ($array as $v) { $b = $v; } echo $msg . ' after loop mem: '. mem() .'<br>'; }); test('foreach ref', function ($msg) use ($array) { echo $msg . ' before loop mem: '. mem() .'<br>'; foreach ($array as &$v) { $b = $v; } unset($v); echo $msg . ' after loop mem: '. mem() .'<br>'; }); test('for', function ($msg) use ($array) { echo $msg . ' before loop mem: '. mem() .'<br>'; $so = count($array); for ($i = 0; $i < $so; ++$i) { $b = $array[$i]; } echo $msg . ' after loop mem: '. mem() .'<br>'; }); test('while each -> list', function ($msg) use ($array) { echo $msg . ' before loop mem: '. mem() .'<br>'; while (list($k, $v) = each($array)) { $b =$v; } echo $msg . ' after loop mem: '. mem() .'<br>'; });

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).

VersionSystem time (s)User time (s)Memory (MiB)
7.2.00.0070.06845.17
7.1.70.0000.08742.93
7.1.60.0200.08742.95
7.1.50.0200.11042.95
7.1.00.0070.09048.31
7.0.201.6440.07740.78
7.0.140.0100.17347.95
7.0.60.0100.11345.41
7.0.50.0230.16743.21
7.0.40.0030.17338.52
7.0.30.0770.13738.53
7.0.20.0930.14738.41
7.0.10.0370.13738.32
7.0.00.0200.10338.47
5.6.280.0230.11786.00
5.6.210.0200.12785.42
5.6.200.0230.06783.11
5.6.190.0130.12385.22
5.6.180.0630.05385.28
5.6.170.0670.07785.37
5.6.160.0070.09385.40
5.6.150.0370.12383.18
5.6.140.0300.12383.18
5.6.130.0300.07383.09
5.6.120.0270.09785.85
5.6.110.0370.10086.07
5.6.100.0330.12786.04
5.6.90.0400.11085.94
5.6.80.0270.12085.36
5.6.70.6270.07085.34
5.5.350.0300.13085.41
5.5.340.0200.07082.95
5.5.330.0330.12784.98
5.5.320.0370.07785.18
5.5.310.0370.07785.08
5.5.300.0500.09082.91
5.5.290.0330.11082.89
5.5.280.0270.12385.69
5.5.270.0200.07785.84
5.5.260.0230.10085.79
5.5.250.0270.10085.66
5.5.240.0200.12785.13
5.4.450.0430.12384.13
5.4.440.1370.10384.20
5.4.430.0870.09084.04
5.4.420.1300.10084.16
5.4.410.1100.11084.18
5.4.400.2770.12383.28
5.4.390.2570.16383.52
5.4.380.0870.09083.43
5.4.370.0970.10383.54
5.4.360.0570.09783.54
5.4.350.0240.06876.73
5.4.340.0260.07676.73
5.4.320.0270.06077.21
5.4.310.0200.06877.21
5.4.300.0230.06377.21
5.4.290.0170.07177.21
5.4.280.0180.07277.11
5.4.270.0240.07077.11
5.4.260.0240.07677.11
5.4.250.0190.07477.11
5.4.240.0400.09783.50
5.4.230.0430.10383.45
5.4.220.0430.10083.71
5.4.210.0470.09783.49
5.4.200.0330.11083.53
5.4.190.0330.11083.48
5.4.180.0270.10383.60
5.4.170.0530.12383.54
5.4.160.0370.09783.52
5.4.150.0230.10383.71
5.4.140.0370.09081.27
5.4.130.0500.09781.30
5.4.120.0470.08781.24
5.4.110.0730.11081.15
5.4.100.0500.10081.07
5.4.90.0530.12381.25
5.4.80.0470.10381.07
5.4.70.0470.11081.13
5.4.60.0370.11381.13
5.4.50.0470.07781.14
5.4.40.0470.11381.04
5.4.30.0530.10381.17
5.4.20.0470.12381.30
5.4.10.0400.13781.10
5.4.00.0500.10380.57
5.3.290.0160.07876.16
5.3.280.0470.10777.87
5.3.270.0470.12777.73
5.3.260.0400.09077.91
5.3.250.0370.10077.99
5.3.240.0570.11777.98
5.3.230.0370.12778.01
5.3.220.0470.09077.94
5.3.210.0470.12377.87
5.3.200.0470.08778.04
5.3.190.0570.09078.00
5.3.180.0470.09777.78
5.3.170.0500.10378.00
5.3.160.0370.09077.89
5.3.150.0470.10077.85
5.3.140.0400.10377.99
5.3.130.0430.15777.83
5.3.120.0600.13777.95
5.3.110.0430.14077.82
5.3.100.0600.10377.99
5.3.90.0430.13777.46
5.3.80.0270.12777.41
5.3.70.0500.11077.35
5.3.60.0430.11077.48
5.3.50.0700.12777.31
5.3.40.0470.10077.21
5.3.30.0500.08377.29
5.3.20.0430.08776.95
5.3.10.0330.10777.00
5.3.00.0470.09076.94
5.2.170.0030.04711.22
5.2.160.0100.04011.14
5.2.150.0100.04011.23
5.2.140.0130.03711.32
5.2.130.0030.04311.07
5.2.120.0070.04011.30
5.2.110.0100.05011.19
5.2.100.0030.04311.26
5.2.90.0130.04711.05
5.2.80.0070.04711.31
5.2.70.0070.04011.09
5.2.60.0030.04311.15
5.2.50.0000.05711.25
5.2.40.0030.04311.09
5.2.30.0100.04310.82
5.2.20.0070.03710.95
5.2.10.0070.03710.94
5.2.00.0070.05010.63
5.1.60.0130.02310.10
5.1.50.0170.0309.99
5.1.40.0130.03310.05
5.1.30.0030.05310.16
5.1.20.0070.04710.20
5.1.10.0030.03710.04
5.1.00.0000.05710.17
5.0.50.0000.0438.52
5.0.40.0030.0278.40
5.0.30.0000.0608.43
5.0.20.0000.0308.19
5.0.10.0130.0308.02
5.0.00.0070.0408.21
4.4.90.0000.0236.91
4.4.80.0030.0206.91
4.4.70.0000.0236.91
4.4.60.0000.0276.91
4.4.50.0100.0176.91
4.4.40.0100.0276.91
4.4.30.0000.0336.91
4.4.20.0030.0206.91
4.4.10.0070.0176.91
4.4.00.0070.0436.91
4.3.110.0000.0236.91
4.3.100.0030.0306.91
4.3.90.0030.0276.91
4.3.80.0030.0306.91
4.3.70.0070.0276.91
4.3.60.0030.0236.91
4.3.50.0000.0236.91
4.3.40.0000.0476.91
4.3.30.0000.0236.91
4.3.20.0030.0276.91
4.3.10.0070.0176.91
4.3.00.0100.0276.84

preferences:
32.07 ms | 401 KiB | 5 Q