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>'. PHP_EOL; } $array = range(0, 30000); test('foreach', function ($msg) use ($array) { echo $msg . ' before loop mem: '. mem() .PHP_EOL; foreach ($array as $v) { $b = $v; } echo $msg . ' after loop mem: '. mem() .PHP_EOL; }); test('foreach ref', function ($msg) use ($array) { echo $msg . ' before loop mem: '. mem() .PHP_EOL; foreach ($array as &$v) { $b = $v; } unset($v); echo $msg . ' after loop mem: '. mem() .PHP_EOL; }); test('for', function ($msg) use ($array) { echo $msg . ' before loop mem: '. mem() .PHP_EOL; $so = count($array); for ($i = 0; $i < $so; ++$i) { $b = $array[$i]; } echo $msg . ' after loop mem: '. mem() .PHP_EOL; }); test('while each -> list', function ($msg) use ($array) { echo $msg . ' before loop mem: '. mem() .PHP_EOL; while (list($k, $v) = each($array)) { $b =$v; } echo $msg . ' after loop mem: '. mem() .PHP_EOL; }); 'Memory peak: ' . round(memory_get_peak_usage() / 1048576, 3) .PHP_EOL;

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)
7.3.120.0030.02317.79
7.3.110.0070.01718.07
7.3.100.0090.01217.86
7.3.90.0110.01517.64
7.3.80.0110.01418.13
7.3.70.0040.02217.76
7.3.60.0030.02317.45
7.3.50.0100.01417.31
7.3.40.0060.01917.63
7.3.30.0090.01617.46
7.3.20.0040.02218.72
7.3.10.0070.01318.82
7.3.00.0070.01218.80
7.2.240.0040.02117.84
7.2.230.0100.01717.75
7.2.220.0100.01917.82
7.2.210.0000.02917.95
7.2.200.0100.01617.86
7.2.190.0090.01618.11
7.2.180.0090.01817.58
7.2.170.0100.01317.99
7.2.160.0030.02217.96
7.2.150.0170.01019.20
7.2.140.0090.00919.37
7.2.130.0060.02019.31
7.2.120.0070.01919.27
7.2.110.0030.02119.21
7.2.100.0070.01719.11
7.2.90.0070.01119.28
7.2.80.0100.01319.33
7.2.70.0020.01919.31
7.2.60.0070.01819.32
7.2.50.0050.01919.19
7.2.40.0100.01019.17
7.2.30.0080.01619.39
7.2.20.0080.01519.34
7.2.10.0090.01219.26
7.2.00.0050.01720.11
7.1.330.0130.01618.13
7.1.320.0110.01818.31
7.1.310.0070.02018.25
7.1.300.0030.02518.14
7.1.290.0040.02518.39
7.1.280.0100.01717.91
7.1.270.0070.02018.20
7.1.260.0100.01717.89
7.1.250.0070.01717.98
7.1.70.0130.00719.41
7.1.60.0070.03219.43
7.1.50.0100.02518.96
7.1.00.0070.08024.73
7.0.200.0060.00819.13
7.0.140.0070.07724.31
7.0.60.0130.08722.74
7.0.50.0070.09320.45
7.0.40.0100.07320.39
7.0.30.0370.05320.42
7.0.20.0270.08320.27
7.0.10.0030.09020.48
7.0.00.0100.10020.43
5.6.280.0100.10329.88
5.6.210.0170.10329.46
5.6.200.0130.06727.02
5.6.190.0130.05329.14
5.6.180.0500.05329.24
5.6.170.0500.07329.24
5.6.160.0300.08729.20
5.6.150.0100.08026.93
5.6.140.0070.06726.93
5.6.130.0000.06327.03
5.6.120.0170.10729.94
5.6.110.0100.10029.75
5.6.100.0100.05729.83
5.6.90.0200.08729.79
5.6.80.0130.10729.21
5.5.350.0330.10029.21
5.5.340.0170.10326.71
5.5.330.0100.06328.99
5.5.320.0400.09728.92
5.5.310.0200.07729.02
5.5.300.0100.10726.78
5.5.290.0130.08326.70
5.5.280.0130.10729.55
5.5.270.0070.11729.65
5.5.260.0100.09029.64
5.5.250.0200.10329.28
5.5.240.0170.08329.04
5.4.450.1030.07728.08
5.4.440.0630.10327.96
5.4.430.0200.09028.14
5.4.420.0100.09328.14
5.4.410.0170.08027.59
5.4.400.0270.10727.40
5.4.390.0070.09327.18
5.4.380.0100.09027.32
5.4.370.0300.07327.37
5.4.360.0370.07027.24
5.4.350.0100.06520.54
5.4.340.0100.06320.54
5.4.320.0060.06721.02
5.4.310.0100.06421.02
5.4.300.0110.05721.03
5.4.290.0090.06321.00
5.4.280.0090.08120.92
5.4.270.0100.06920.92
5.4.260.0100.06620.92
5.4.250.0070.06620.92
5.4.240.0170.08727.42
5.4.230.0200.10027.39
5.4.220.0070.10027.54
5.4.210.0070.09327.52
5.4.200.0130.13327.51
5.4.190.0100.10327.60
5.4.180.0100.09327.38
5.4.170.0100.12327.37
5.4.160.0170.12027.53
5.4.150.0200.10327.31
5.4.140.0170.08725.00
5.4.130.0200.11024.93
5.4.120.0200.12324.88
5.4.110.0100.10025.07
5.4.100.0170.11025.08
5.4.90.0130.10025.09
5.4.80.0170.12325.07
5.4.70.0270.08724.92
5.4.60.0100.09724.97
5.4.50.0170.07724.99
5.4.40.0170.09724.98
5.4.30.0170.10725.15
5.4.20.0070.11325.00
5.4.10.0200.08324.85
5.4.00.0200.13324.38
5.3.290.0080.06421.14
5.3.280.0100.09323.13
5.3.270.0130.09023.09
5.3.260.0230.09723.11
5.3.250.0070.11023.02
5.3.240.0230.12023.11
5.3.230.0100.12722.98
5.3.220.0230.12023.05
5.3.210.0100.14023.00
5.3.200.0100.14023.15
5.3.190.0230.09722.98
5.3.180.0130.08322.94
5.3.170.0130.11022.99
5.3.160.0100.09723.12
5.3.150.0130.12022.88
5.3.140.0100.10723.03
5.3.130.0270.12723.04
5.3.120.0200.11722.97
5.3.110.0230.09023.04
5.3.100.0100.13722.55
5.3.90.0200.10022.39
5.3.80.0100.13022.53
5.3.70.0200.11022.32
5.3.60.0100.10022.34
5.3.50.0130.09322.30
5.3.40.0130.10022.30
5.3.30.0170.12322.43
5.3.20.0130.11322.05
5.3.10.0070.09022.02
5.3.00.0100.10021.79
5.2.170.0100.05711.16
5.2.160.0100.04311.23
5.2.150.0100.06311.24
5.2.140.0100.05310.99
5.2.130.0030.04711.02
5.2.120.0030.03711.09
5.2.110.0070.05311.29
5.2.100.0100.04011.28
5.2.90.0070.05711.09
5.2.80.0100.04011.18
5.2.70.0030.04011.05
5.2.60.0070.05010.97
5.2.50.0100.04010.87
5.2.40.0200.03710.96
5.2.30.0000.05310.93
5.2.20.0070.04311.05
5.2.10.0130.03710.93
5.2.00.0130.05010.69
5.1.60.0070.03010.08
5.1.50.0070.03710.10
5.1.40.0000.05010.14
5.1.30.0070.03710.32
5.1.20.0000.04310.55
5.1.10.0200.03710.15
5.1.00.0030.04710.23
5.0.50.0030.0379.95
5.0.40.0070.0309.95
5.0.30.0000.0439.95
5.0.20.0100.0209.95
5.0.10.0030.0279.95
5.0.00.0130.0479.95
4.4.90.0000.0309.95
4.4.80.0000.0279.95
4.4.70.0030.0279.95
4.4.60.0070.0209.95
4.4.50.0030.0279.95
4.4.40.0030.0339.95
4.4.30.0030.0309.95
4.4.20.0070.0209.95
4.4.10.0000.0279.95
4.4.00.0000.0379.95
4.3.110.0000.0309.95
4.3.100.0030.0209.95
4.3.90.0100.0139.95
4.3.80.0070.0409.95
4.3.70.0030.0179.95
4.3.60.0070.0279.95
4.3.50.0030.0209.95
4.3.40.0100.0309.95
4.3.30.0070.0209.95
4.3.20.0070.0209.95
4.3.10.0030.0209.95
4.3.00.0100.0236.59

preferences:
28.61 ms | 401 KiB | 5 Q