3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = 129; $i = 1; $y = 1; $m = microtime(true); for ($i = 1; $i <= 1000; ++$i){ $y = 1 << ceil(log($x, 2)); } echo microtime(true) - $m, "\n\r"; $y = 1; $m = microtime(true); for ($i = 1; $i <= 1000; ++$i){ while ($y < $x) { $y = $y <<1; } } echo microtime(true) - $m;

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)
7.3.10.0100.00516.79
7.3.00.0100.00016.67
7.2.130.0090.00617.08
7.2.120.0060.00817.14
7.2.110.0100.00717.11
7.2.100.0000.01416.95
7.2.90.0190.00417.02
7.2.80.0000.01616.97
7.2.70.0090.00917.02
7.2.60.0110.00717.20
7.2.50.0060.00916.89
7.2.40.0140.00417.16
7.2.30.0190.00717.18
7.2.20.0080.00817.04
7.2.10.0120.00617.07
7.2.00.0110.00718.40
7.1.250.0120.00415.83
7.1.240.0030.00915.67
7.1.230.0100.00515.99
7.1.220.0070.00716.05
7.1.210.0090.00316.09
7.1.200.0070.00716.05
7.1.190.0110.00916.22
7.1.180.0000.01816.08
7.1.170.0110.00015.98
7.1.160.0090.00615.97
7.1.150.0070.00715.89
7.1.140.0100.00316.01
7.1.130.0080.01516.08
7.1.120.0060.00916.12
7.1.110.0130.00715.94
7.1.100.0000.01615.55
7.1.90.0160.00015.88
7.1.80.0100.00715.96
7.1.70.0040.00716.63
7.1.60.0040.01717.48
7.1.50.0100.00816.61
7.1.40.0040.01115.80
7.1.30.0120.00315.96
7.1.20.0060.00615.90
7.1.10.0070.01015.84
7.1.00.0020.02319.15
7.0.330.0090.00615.55
7.0.320.0060.00915.56
7.0.310.0170.00315.53
7.0.300.0230.00715.62
7.0.290.0090.00915.47
7.0.280.0120.00415.53
7.0.270.0120.00315.48
7.0.260.0070.00715.55
7.0.250.0100.00315.58
7.0.240.0000.01015.57
7.0.230.0030.01215.90
7.0.220.0040.01115.76
7.0.210.0060.00915.50
7.0.200.0020.01116.20
7.0.190.0080.00815.64
7.0.180.0070.00715.66
7.0.170.0030.00715.41
7.0.160.0110.00515.78
7.0.150.0000.01115.73
7.0.140.0020.04018.91
7.0.130.0070.00415.61
7.0.120.0000.01015.37
7.0.110.0070.01015.50
7.0.100.0100.03817.80
7.0.90.0150.02517.95
7.0.80.0080.02417.93
7.0.70.0080.02317.91
7.0.60.0040.02617.96
7.0.50.0120.03018.19
7.0.40.0180.03017.05
7.0.30.0120.02417.07
7.0.20.0130.02217.09
7.0.10.0060.03117.03
7.0.00.0080.02416.91
5.6.380.0060.00914.64
5.6.370.0100.00614.39
5.6.360.0100.00614.29
5.6.350.0200.00014.59
5.6.340.0070.00714.63
5.6.330.0100.00314.45
5.6.320.0060.00614.49
5.6.310.0090.00313.99
5.6.300.0130.00014.40
5.6.290.0040.00814.66
5.6.280.0010.04117.84
5.6.270.0200.01014.30
5.6.260.0060.01314.25
5.6.250.0110.03417.70
5.6.240.0070.02717.61
5.6.230.0080.02517.67
5.6.220.0080.02317.59
5.6.210.0080.02117.65
5.6.200.0030.02717.90
5.6.190.0090.02917.99
5.6.180.0100.02917.96
5.6.170.0110.02518.00
5.6.160.0060.02718.01
5.6.150.0050.02617.90
5.6.140.0060.02417.97
5.6.130.0090.02217.95
5.6.120.0160.01818.25
5.6.110.0080.02518.01
5.6.100.0090.02517.82
5.6.90.0050.04217.86
5.6.80.0050.03717.55
5.6.70.0080.03517.72
5.6.60.0130.03417.67
5.6.50.0020.03917.75
5.6.40.0090.03817.43
5.6.30.0040.04717.63
5.6.20.0090.03617.58
5.6.10.0080.04117.56
5.6.00.0080.04217.53
5.5.380.0100.03915.93
5.5.370.0010.02615.97
5.5.360.0030.02515.93
5.5.350.0060.02315.82
5.5.340.0090.01816.21
5.5.330.0020.02816.22
5.5.320.0060.02416.34
5.5.310.0100.02216.28
5.5.300.0070.02016.19
5.5.290.0050.02215.88
5.5.280.0020.02916.19
5.5.270.0040.02416.08
5.5.260.0080.02316.13
5.5.250.0030.02916.00
5.5.240.0020.03615.81
5.5.230.0030.04315.89
5.5.220.0030.04715.90
5.5.210.0070.04815.69
5.5.200.0080.04515.67
5.5.190.0100.04015.90
5.5.180.0100.03315.85
5.5.170.0040.00711.09
5.5.160.0050.02715.76
5.5.150.0070.03715.78
5.5.140.0050.03015.75
5.5.130.0030.04215.79
5.5.120.0100.04015.80
5.5.110.0100.03815.76
5.5.100.0140.03515.64
5.5.90.0060.04315.62
5.5.80.0060.03315.79
5.5.70.0080.04315.76
5.5.60.0050.04515.84
5.5.50.0120.03815.64
5.5.40.0070.04715.78
5.5.30.0050.03715.74
5.5.20.0070.04515.66
5.5.10.0070.04915.62
5.5.00.0070.02915.70
5.4.450.0050.02215.46
5.4.440.0010.02615.29
5.4.430.0070.02215.47
5.4.420.0050.02815.32
5.4.410.0110.02115.17
5.4.400.0030.04415.15
5.4.390.0130.03315.29
5.4.380.0080.03315.33
5.4.370.0050.04515.10
5.4.360.0070.03715.27
5.4.350.0050.04415.22
5.4.340.0040.02915.15
5.4.330.0060.00911.12
5.4.320.0030.02315.14
5.4.310.0040.03915.33
5.4.300.0080.03815.20
5.4.290.0050.04115.09
5.4.280.0080.03815.15
5.4.270.0150.03515.19
5.4.260.0040.04215.12
5.4.250.0090.03215.26
5.4.240.0090.03515.16
5.4.230.0110.03315.26
5.4.220.0030.04715.06
5.4.210.0130.03315.20
5.4.200.0120.03815.20
5.4.190.0050.04315.16
5.4.180.0080.04015.17
5.4.170.0130.03715.07
5.4.160.0060.04115.15
5.4.150.0120.03515.12
5.4.140.0060.04013.66
5.4.130.0090.03213.79
5.4.120.0090.03013.73
5.4.110.0050.03713.84
5.4.100.0050.02913.80
5.4.90.0050.03013.71
5.4.80.0050.03513.94
5.4.70.0080.03613.75
5.4.60.0080.03913.92
5.4.50.0070.03413.84
5.4.40.0020.04413.94
5.4.30.0030.04213.72
5.4.20.0100.02513.88
5.4.10.0110.04113.76
5.4.00.0050.04513.48
5.3.290.0050.04012.79
5.3.280.0080.03212.73
5.3.270.0060.03912.69
5.3.260.0080.03812.65
5.3.250.0070.02912.67
5.3.240.0030.03812.62
5.3.230.0060.02512.73
5.3.220.0070.04312.66
5.3.210.0030.04412.65
5.3.200.0020.02912.58
5.3.190.0050.04112.70
5.3.180.0050.03512.67
5.3.170.0030.02612.64
5.3.160.0030.03512.64
5.3.150.0080.04512.71
5.3.140.0100.03712.71
5.3.130.0080.02512.59
5.3.120.0090.03412.70
5.3.110.0080.02312.67
5.3.100.0120.04012.37
5.3.90.0090.04112.45
5.3.80.0050.02812.30
5.3.70.0020.04512.28
5.3.60.0020.03612.45
5.3.50.0050.02412.23
5.3.40.0070.03912.41
5.3.30.0070.03812.41
5.3.20.0010.02412.18
5.3.10.0050.03812.17
5.3.00.0030.03312.16
5.2.170.0070.03211.32
5.2.160.0020.02511.32
5.2.150.0070.02511.32
5.2.140.0050.03111.32
5.2.130.0020.03411.32
5.2.120.0090.03111.32
5.2.110.0030.03311.32
5.2.100.0030.03411.32
5.2.90.0030.02011.32
5.2.80.0110.02811.32
5.2.70.0020.03711.32
5.2.60.0030.02011.32
5.2.50.0050.03011.32
5.2.40.0000.03811.32
5.2.30.0040.02711.32
5.2.20.0010.03311.32
5.2.10.0030.03311.32
5.2.00.0070.02511.32
5.1.60.0040.02311.32
5.1.50.0020.03111.32
5.1.40.0060.01511.32
5.1.30.0050.01811.32
5.1.20.0070.02011.32
5.1.10.0010.01811.32
5.1.00.0050.01811.32
5.0.50.0030.02511.32
5.0.40.0000.01611.32
5.0.30.0000.03811.32
5.0.20.0020.01511.32
5.0.10.0010.02111.32
5.0.00.0000.02111.32
4.4.90.0040.00911.32
4.4.80.0020.01011.32
4.4.70.0050.01911.32
4.4.60.0060.01311.32
4.4.50.0010.01811.32
4.4.40.0020.01711.32
4.4.30.0040.01411.32
4.4.20.0000.01111.32
4.4.10.0000.01211.32
4.4.00.0020.02311.32
4.3.110.0060.01011.32
4.3.100.0060.01811.32
4.3.90.0030.01911.32
4.3.80.0050.01311.32
4.3.70.0050.01611.32
4.3.60.0020.02011.32
4.3.50.0000.02111.32
4.3.40.0020.02611.32
4.3.30.0020.00911.32
4.3.20.0050.00811.32
4.3.10.0000.02011.32
4.3.00.0020.01511.32

preferences:
38.95 ms | 404 KiB | 6 Q