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; });

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)
7.4.10.0060.01917.95
7.4.00.0070.02518.01
7.3.130.0130.02017.64
7.3.120.0080.01817.64
7.3.110.0050.01917.81
7.3.100.0090.01617.67
7.3.90.0030.01817.54
7.3.80.0080.01417.41
7.3.70.0060.01717.42
7.3.60.0070.01817.58
7.3.50.0140.01417.51
7.3.40.0080.01617.82
7.3.30.0100.01317.59
7.3.20.0090.01319.01
7.3.10.0020.01818.87
7.3.00.0050.01618.90
7.2.260.0100.02318.00
7.2.250.0160.01617.68
7.2.240.0040.02417.89
7.2.230.0050.01917.68
7.2.220.0080.01817.89
7.2.210.0060.01817.99
7.2.200.0070.01817.87
7.2.190.0130.01217.87
7.2.180.0050.01717.80
7.2.170.0050.02217.73
7.2.160.0100.01517.86
7.2.150.0070.01719.23
7.2.140.0100.01519.19
7.2.130.0050.01819.12
7.2.120.0050.02019.11
7.2.110.0080.01519.17
7.2.100.0050.01819.15
7.2.90.0080.01719.20
7.2.80.0060.01719.23
7.2.70.0060.01919.37
7.2.60.0080.01619.30
7.2.50.0080.01619.26
7.2.40.0070.01719.29
7.2.30.0110.01219.10
7.2.20.0130.01119.14
7.2.10.0070.01419.21
7.2.00.0100.01320.18
7.1.330.0140.01318.26
7.1.320.0020.02518.09
7.1.310.0050.02417.93
7.1.300.0050.01918.20
7.1.290.0050.02318.07
7.1.280.0080.01818.08
7.1.270.0030.02318.03
7.1.260.0070.02018.04
7.1.250.0030.02318.28
7.1.240.0100.01718.03
7.1.230.0030.02218.14
7.1.220.0030.02418.27
7.1.210.0000.02218.02
7.1.200.0070.02018.00
7.1.190.0000.02118.08
7.1.180.0030.02418.11
7.1.170.0070.02018.07
7.1.160.0000.02718.27
7.1.150.0030.02318.11
7.1.140.0070.02017.89
7.1.130.0060.01818.08
7.1.120.0030.02418.27
7.1.110.0030.01918.10
7.1.100.0060.01618.18
7.1.90.0030.02018.18
7.1.80.0030.02318.23
7.1.70.0050.01618.85
7.1.60.0070.02418.74
7.1.50.0070.02318.54
7.1.40.0090.01618.02
7.1.30.0030.02318.16
7.1.20.0030.01718.24
7.1.10.0030.02318.29
7.1.00.0070.05521.40
7.0.330.0070.02117.71
7.0.320.0000.02517.70
7.0.310.0000.02717.69
7.0.300.0000.02617.83
7.0.290.0030.02317.58
7.0.280.0040.02517.71
7.0.270.0130.01617.73
7.0.260.0070.02018.00
7.0.250.0120.01517.58
7.0.240.0060.02117.87
7.0.230.0070.02017.81
7.0.220.0000.02417.88
7.0.210.0000.03017.76
7.0.200.0030.01518.61
7.0.190.0060.02217.84
7.0.180.0030.02117.92
7.0.170.0030.02417.84
7.0.160.0060.02317.94
7.0.150.0070.01817.75
7.0.140.0020.05121.09
7.0.130.0100.01317.42
7.0.120.0040.02517.79
7.0.110.0100.01618.08
7.0.100.0030.02317.73
7.0.90.0000.02717.94
7.0.80.0000.02417.55
7.0.70.0130.01617.86
7.0.60.0020.03820.12
7.0.50.0070.05619.03
7.0.40.0030.05917.25
7.0.30.0170.04517.19
7.0.20.0180.03917.14
7.0.10.0120.03417.05
7.0.00.0020.06817.07
5.6.400.0070.04423.13
5.6.390.0100.03823.48
5.6.380.0130.03323.54
5.6.370.0130.04023.25
5.6.360.0130.03323.23
5.6.350.0100.04823.06
5.6.340.0160.03523.23
5.6.330.0230.02923.27
5.6.320.0160.03923.39
5.6.310.0100.03923.20
5.6.300.0070.05323.42
5.6.290.0110.03923.41
5.6.280.0160.06426.48
5.6.270.0030.04823.46
5.6.260.0040.04623.23
5.6.250.0070.04323.43
5.6.240.0130.03223.36
5.6.230.0030.04123.23
5.6.220.0100.05323.34
5.6.210.0080.05326.25
5.6.200.0120.07625.01
5.6.190.0120.07026.26
5.6.180.0210.07126.11
5.6.170.0200.04926.05
5.6.160.0080.07926.16
5.6.150.0110.05725.14
5.6.140.0080.07725.03
5.6.130.0120.06325.19
5.6.120.0080.06426.62
5.6.110.0120.07826.55
5.6.100.0200.06726.57
5.6.90.0120.07026.42
5.6.80.0180.06526.16
5.6.70.0250.07326.13
5.6.60.0200.03623.02
5.6.50.0250.03223.33
5.6.40.0100.04823.18
5.6.30.0190.02923.03
5.6.20.0130.04023.30
5.6.10.0100.03823.02
5.6.00.0100.04122.95
5.5.380.0170.03723.50
5.5.370.0160.03923.15
5.5.360.0100.05723.21
5.5.350.0080.07926.24
5.5.340.0150.07025.03
5.5.330.0070.08126.06
5.5.320.0250.05226.12
5.5.310.0150.07226.15
5.5.300.0070.06325.02
5.5.290.0050.05424.93
5.5.280.0100.04826.67
5.5.270.0130.07326.48
5.5.260.0050.05426.40
5.5.250.0130.06926.28
5.5.240.0100.07525.99
5.5.230.0170.03423.47
5.5.220.0140.03823.41
5.5.210.0030.05223.28
5.5.200.0070.04323.32
5.5.190.0070.04122.96
5.5.180.0070.04523.21
5.5.170.0100.04523.01
5.5.160.0100.04223.39
5.5.150.0070.05223.03
5.5.140.0130.04423.21
5.5.130.0130.04223.12
5.5.120.0130.03923.34
5.5.110.0070.04223.23
5.5.100.0100.05623.21
5.5.90.0200.04423.00
5.5.80.0170.04123.12
5.5.70.0100.03723.34
5.5.60.0170.04222.96
5.5.50.0130.04422.93
5.5.40.0030.05323.26
5.5.30.0030.04223.56
5.5.20.0140.03522.68
5.5.10.0130.03623.37
5.5.00.0130.04023.02
5.4.450.0470.06523.95
5.4.440.0570.07224.12
5.4.430.0450.06523.94
5.4.420.0100.06523.88
5.4.410.0530.06424.19
5.4.400.0310.07623.62
5.4.390.0220.07023.54
5.4.380.0150.07323.67
5.4.370.0150.06423.64
5.4.360.0200.06923.61
5.4.350.0180.04620.36
5.4.340.0120.05720.17
5.4.330.0060.04220.05
5.4.320.0100.04920.48
5.4.310.0140.05120.52
5.4.300.0070.05820.45
5.4.290.0060.05120.44
5.4.280.0110.04820.26
5.4.270.0160.06320.36
5.4.260.0130.05420.49
5.4.250.0100.05620.46
5.4.240.0200.07523.71
5.4.230.0120.08223.68
5.4.220.0070.09823.54
5.4.210.0180.08023.55
5.4.200.0130.09723.69
5.4.190.0180.07423.57
5.4.180.0250.07723.71
5.4.170.0190.07923.73
5.4.160.0080.06423.76
5.4.150.0050.06923.45
5.4.140.0190.05822.42
5.4.130.0130.07722.52
5.4.120.0170.06022.68
5.4.110.0170.07122.53
5.4.100.0100.07122.70
5.4.90.0070.08422.53
5.4.80.0130.06722.38
5.4.70.0150.07522.45
5.4.60.0070.09222.62
5.4.50.0130.07822.45
5.4.40.0070.07822.38
5.4.30.0150.05422.55
5.4.20.0100.06822.50
5.4.10.0180.07522.31
5.4.00.0080.07422.07
5.3.290.0160.04920.19
5.3.280.0170.07520.94
5.3.270.0190.08721.10
5.3.260.0120.08221.04
5.3.250.0180.08320.99
5.3.240.0160.06220.80
5.3.230.0190.06421.02
5.3.220.0080.08121.04
5.3.210.0170.06520.99
5.3.200.0090.07920.97
5.3.190.0050.08320.95
5.3.180.0180.08721.00
5.3.170.0200.08321.04
5.3.160.0210.06121.04
5.3.150.0150.08321.10
5.3.140.0180.08521.05
5.3.130.0200.06921.03
5.3.120.0130.09120.97
5.3.110.0120.09020.92
5.3.100.0260.06720.80
5.3.90.0150.06620.81
5.3.80.0160.08120.61
5.3.70.0220.08220.70
5.3.60.0100.08320.69
5.3.50.0150.07820.65
5.3.40.0250.07320.77
5.3.30.0260.06520.74
5.3.20.0140.06720.63
5.3.10.0120.07320.43
5.3.00.0100.06920.46
5.2.170.0170.03711.23
5.2.160.0000.06711.32
5.2.150.0200.04311.16
5.2.140.0000.04711.24
5.2.130.0070.04011.16
5.2.120.0030.04311.07
5.2.110.0030.04311.01
5.2.100.0100.03310.93
5.2.90.0070.04011.18
5.2.80.0000.04711.05
5.2.70.0070.05011.18
5.2.60.0100.04711.25
5.2.50.0030.06310.99
5.2.40.0170.03711.03
5.2.30.0130.04311.05
5.2.20.0070.03711.05
5.2.10.0130.04310.87
5.2.00.0000.06310.91
5.1.60.0070.03310.25
5.1.50.0070.03710.07
5.1.40.0100.0379.95
5.1.30.0100.04710.32
5.1.20.0100.03310.27
5.1.10.0170.03310.00
5.1.00.0070.04010.28
5.0.50.0070.0339.95
5.0.40.0030.0409.95
5.0.30.0070.0539.95
5.0.20.0030.0339.95
5.0.10.0070.0279.95
5.0.00.0000.0439.95
4.4.90.0030.0239.95
4.4.80.0030.0239.95
4.4.70.0000.0239.95
4.4.60.0030.0309.95
4.4.50.0100.0139.95
4.4.40.0030.0379.95
4.4.30.0000.0239.95
4.4.20.0070.0209.95
4.4.10.0000.0239.95
4.4.00.0000.0379.95
4.3.110.0070.0179.95
4.3.100.0000.0309.95
4.3.90.0000.0309.95
4.3.80.0070.0409.95
4.3.70.0000.0279.95
4.3.60.0030.0309.95
4.3.50.0100.0209.95
4.3.40.0070.0309.95
4.3.30.0030.0209.95
4.3.20.0030.0209.95
4.3.10.0000.0279.95
4.3.00.0100.0236.73

preferences:
36.64 ms | 401 KiB | 5 Q