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; } $array = range(0, 3000); test('foreach', function ($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; }); echo '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)
7.4.10.0080.01215.53
7.4.00.0070.01115.60
7.3.130.0110.00815.63
7.3.120.0030.01215.62
7.3.110.0030.01515.58
7.3.100.0050.01115.66
7.3.90.0050.01415.42
7.3.80.0050.01215.72
7.3.70.0040.01115.65
7.3.60.0070.00715.47
7.3.50.0050.01215.47
7.3.40.0060.00815.49
7.3.30.0080.00915.45
7.3.20.0040.01017.09
7.3.10.0090.00517.04
7.3.00.0040.01217.10
7.2.260.0080.01015.80
7.2.250.0110.00815.61
7.2.240.0020.01715.73
7.2.230.0080.01015.53
7.2.220.0030.01515.87
7.2.210.0030.01615.85
7.2.200.0100.00815.94
7.2.190.0090.00715.73
7.2.180.0100.00715.92
7.2.170.0080.00515.81
7.2.160.0090.00715.97
7.2.150.0060.00817.38
7.2.140.0100.00517.19
7.2.130.0070.01117.28
7.2.120.0070.01017.32
7.2.110.0080.00917.23
7.2.100.0070.00617.18
7.2.90.0070.00817.40
7.2.80.0070.00617.35
7.2.70.0080.00517.29
7.2.60.0050.01117.28
7.2.50.0050.00817.31
7.2.40.0080.00717.26
7.2.30.0040.01217.23
7.2.20.0090.00617.22
7.2.10.0060.01017.21
7.2.00.0030.01317.90
7.1.330.0060.01116.13
7.1.320.0010.01116.05
7.1.310.0050.01016.30
7.1.300.0030.01315.86
7.1.290.0030.01216.13
7.1.280.0050.01216.16
7.1.270.0080.00716.00
7.1.260.0050.01316.13
7.1.250.0070.00816.28
7.1.240.0030.01416.13
7.1.230.0020.01416.26
7.1.220.0050.01016.22
7.1.210.0050.01116.17
7.1.200.0010.01316.25
7.1.190.0060.01016.16
7.1.180.0000.01416.11
7.1.170.0040.01316.24
7.1.160.0070.00716.13
7.1.150.0020.01416.17
7.1.140.0020.01316.07
7.1.130.0050.00716.20
7.1.120.0070.00916.04
7.1.110.0080.00616.24
7.1.100.0120.00516.19
7.1.90.0110.00616.17
7.1.80.0050.00916.21
7.1.70.0040.01216.61
7.1.60.0050.01317.29
7.1.50.0090.00916.47
7.1.40.0100.00516.31
7.1.30.0050.01016.21
7.1.20.0060.00716.29
7.1.10.0060.00916.21
7.1.00.0060.03018.34
7.0.330.0040.01215.83
7.0.320.0070.00715.66
7.0.310.0030.01015.64
7.0.300.0090.00815.53
7.0.290.0020.01515.67
7.0.280.0000.01515.87
7.0.270.0090.00515.65
7.0.260.0070.01015.64
7.0.250.0090.00815.84
7.0.240.0050.00815.90
7.0.230.0030.01415.85
7.0.220.0040.01115.69
7.0.210.0050.01015.88
7.0.200.0110.00515.64
7.0.190.0050.01115.66
7.0.180.0040.01115.66
7.0.170.0080.00715.85
7.0.160.0030.01015.88
7.0.150.0020.01415.69
7.0.140.0070.03218.02
7.0.130.0040.01215.87
7.0.120.0080.00715.82
7.0.110.0050.01315.65
7.0.100.0040.02517.36
7.0.90.0080.01717.34
7.0.80.0010.02417.32
7.0.70.0030.02517.35
7.0.60.0020.02417.33
7.0.50.0030.02217.44
7.0.40.0040.02316.09
7.0.30.0090.01416.03
7.0.20.0040.02115.99
7.0.10.0060.02015.86
7.0.00.0080.02315.87
5.6.400.0050.01315.27
5.6.390.0120.00915.17
5.6.380.0050.01215.38
5.6.370.0080.00815.37
5.6.360.0100.00715.79
5.6.350.0080.01015.49
5.6.340.0080.01015.34
5.6.330.0100.00815.52
5.6.320.0020.01415.59
5.6.310.0020.01715.56
5.6.300.0070.00915.55
5.6.290.0090.00915.60
5.6.280.0070.03317.77
5.6.270.0080.00815.39
5.6.260.0090.00915.36
5.6.250.0090.03017.64
5.6.240.0050.02217.65
5.6.230.0060.02517.58
5.6.220.0070.02017.52
5.6.210.0080.02317.61
5.6.200.0040.02217.74
5.6.190.0040.02917.80
5.6.180.0050.02317.79
5.6.170.0020.02417.77
5.6.160.0060.02517.69
5.6.150.0090.03317.62
5.6.140.0070.02417.94
5.6.130.0120.03217.64
5.6.120.0070.03617.75
5.6.110.0100.02317.64
5.6.100.0130.03117.73
5.6.90.0060.03417.54
5.6.80.0090.03317.47
5.6.70.0090.02217.45
5.6.60.0110.03217.46
5.6.50.0040.03317.32
5.6.40.0070.03317.49
5.6.30.0100.03017.38
5.6.20.0070.03917.47
5.6.10.0100.03217.39
5.6.00.0080.03217.32
5.5.380.0050.02317.50
5.5.370.0050.02617.48
5.5.360.0040.02217.42
5.5.350.0030.02417.41
5.5.340.0020.02817.37
5.5.330.0040.02617.68
5.5.320.0060.02217.54
5.5.310.0080.01817.53
5.5.300.0070.03917.68
5.5.290.0090.03317.57
5.5.280.0080.02617.32
5.5.270.0050.03817.59
5.5.260.0080.03417.59
5.5.250.0070.03517.34
5.5.240.0090.03417.35
5.5.230.0090.03217.14
5.5.220.0030.03017.29
5.5.210.0080.03617.19
5.5.200.0060.03617.15
5.5.190.0090.03217.03
5.5.180.0120.03117.25
5.5.170.0090.01215.45
5.5.160.0100.02617.31
5.5.150.0080.02917.45
5.5.140.0050.03417.47
5.5.130.0080.03017.29
5.5.120.0040.03617.45
5.5.110.0100.03117.38
5.5.100.0070.03417.30
5.5.90.0040.03517.31
5.5.80.0080.03417.37
5.5.70.0100.03117.27
5.5.60.0070.03817.26
5.5.50.0080.03317.26
5.5.40.0070.03117.19
5.5.30.0120.02917.28
5.5.20.0040.03617.19
5.5.10.0080.03217.20
5.5.00.0070.02417.30
5.4.450.0040.03615.03
5.4.440.0080.02614.88
5.4.430.0040.02814.91
5.4.420.0030.02414.95
5.4.410.0090.03414.86
5.4.400.0080.03014.73
5.4.390.0090.02914.86
5.4.380.0060.03214.71
5.4.370.0050.03114.89
5.4.360.0090.02814.62
5.4.350.0090.03014.82
5.4.340.0100.02914.80
5.4.330.0040.00812.14
5.4.320.0060.03314.92
5.4.310.0040.03114.66
5.4.300.0020.03814.63
5.4.290.0080.03214.81
5.4.280.0070.03214.97
5.4.270.0120.03014.79
5.4.260.0090.03014.84
5.4.250.0110.03014.77
5.4.240.0070.03514.69
5.4.230.0040.03214.76
5.4.220.0070.03214.73
5.4.210.0070.03414.69
5.4.200.0060.03414.88
5.4.190.0070.03214.71
5.4.180.0030.03114.76
5.4.170.0050.03214.69
5.4.160.0060.03014.71
5.4.150.0050.03514.82
5.4.140.0050.03613.99
5.4.130.0100.02913.77
5.4.120.0080.03213.93
5.4.110.0070.03613.89
5.4.100.0070.03213.91
5.4.90.0050.03313.91
5.4.80.0060.03313.81
5.4.70.0020.03513.91
5.4.60.0070.03213.99
5.4.50.0040.03414.04
5.4.40.0060.03314.04
5.4.30.0080.02513.81
5.4.20.0030.03313.97
5.4.10.0100.02813.86
5.4.00.0090.02813.68
5.3.290.0080.02713.19
5.3.280.0060.03413.13
5.3.270.0060.03313.13
5.3.260.0030.03713.21
5.3.250.0050.03013.13
5.3.240.0070.03413.11
5.3.230.0010.03613.17
5.3.220.0070.03112.85
5.3.210.0040.03513.15
5.3.200.0100.02813.06
5.3.190.0080.02813.17
5.3.180.0090.03313.21
5.3.170.0090.03313.18
5.3.160.0090.03213.13
5.3.150.0080.02713.19
5.3.140.0020.03713.15
5.3.130.0100.02913.01
5.3.120.0020.03613.09
5.3.110.0090.03113.09
5.3.100.0040.03412.96
5.3.90.0030.03813.01
5.3.80.0050.03312.78
5.3.70.0020.03512.89
5.3.60.0080.03212.90
5.3.50.0030.03712.88
5.3.40.0070.03312.88
5.3.30.0090.03212.90
5.3.20.0050.03712.82
5.3.10.0040.03412.67
5.3.00.0070.03212.57
5.2.170.0070.05711.18
5.2.160.0070.05311.07
5.2.150.0030.06311.29
5.2.140.0070.05711.24
5.2.130.0030.06011.04
5.2.120.0030.06311.20
5.2.110.0200.04711.09
5.2.100.0000.06011.22
5.2.90.0030.03711.17
5.2.80.0170.04711.15
5.2.70.0030.06011.16
5.2.60.0000.07011.21
5.2.50.0170.05011.07
5.2.40.0070.06310.91
5.2.30.0070.04011.01
5.2.20.0030.05311.03
5.2.10.0070.05011.01
5.2.00.0100.05710.64
5.1.60.0030.03010.09
5.1.50.0000.0609.99
5.1.40.0070.05310.02
5.1.30.0070.05310.35
5.1.20.0000.06010.49
5.1.10.0000.06010.08
5.1.00.0100.05010.14
5.0.50.0070.0439.57
5.0.40.0000.0509.57
5.0.30.0030.0639.57
5.0.20.0070.0439.57
5.0.10.0070.0439.57
5.0.00.0030.0639.57
4.4.90.0030.0309.57
4.4.80.0030.0339.57
4.4.70.0030.0179.57
4.4.60.0070.0309.57
4.4.50.0000.0209.57
4.4.40.0100.0479.57
4.4.30.0000.0239.57
4.4.20.0030.0409.57
4.4.10.0070.0309.57
4.4.00.0000.0579.57
4.3.110.0000.0379.57
4.3.100.0030.0279.57
4.3.90.0030.0339.57
4.3.80.0070.0509.57
4.3.70.0030.0339.57
4.3.60.0030.0279.57
4.3.50.0000.0379.57
4.3.40.0000.0539.57
4.3.30.0000.0379.57
4.3.20.0000.0379.57
4.3.10.0000.0339.57
4.3.00.0000.0279.57

preferences:
38.21 ms | 401 KiB | 5 Q