3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = 129; $y = 1; $m = microtime(true); $y = 1 << ceil(log($x, 2)); $e = microtime(true); echo ($e - $m), "\n\r"; $y = 1; $m = microtime(true); while ($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)
7.4.00.0030.01415.25
7.3.120.0060.01015.10
7.3.110.0070.01115.39
7.3.100.0060.00915.20
7.3.90.0040.01115.13
7.3.80.0090.00615.16
7.3.70.0100.00615.09
7.3.60.0040.00715.12
7.3.50.0060.00615.15
7.3.40.0040.00414.88
7.3.30.0030.00715.02
7.3.20.0000.01416.89
7.3.10.0090.00616.82
7.3.00.0070.00717.08
7.2.250.0030.01714.97
7.2.240.0140.00315.21
7.2.230.0090.00615.30
7.2.220.0030.01315.55
7.2.210.0030.01314.91
7.2.200.0040.01214.90
7.2.190.0030.01315.16
7.2.180.0030.01015.05
7.2.170.0000.01415.34
7.1.330.0000.01216.13
7.1.320.0090.00616.04
7.1.310.0100.00715.93
7.1.300.0030.01316.02
7.1.290.0110.00316.25
7.1.280.0040.01116.07
7.1.270.0040.00716.11
7.1.260.0090.00616.17
7.1.70.0050.00317.34
7.1.60.0120.01219.24
7.1.50.0130.01017.39
7.1.00.0070.06022.68
7.0.200.0090.00016.93
7.0.140.0030.07322.49
7.0.100.0200.08020.24
7.0.90.0070.05320.12
7.0.80.0270.07720.07
7.0.70.0030.04720.12
7.0.60.0270.06320.11
7.0.50.0030.07020.59
7.0.40.0130.07320.21
7.0.30.0170.07320.42
7.0.20.0130.07720.46
7.0.10.0070.07320.48
7.0.00.0100.05720.38
5.6.280.0030.07021.31
5.6.250.0100.05720.80
5.6.240.0030.04020.79
5.6.230.0100.06720.81
5.6.220.0170.06020.80
5.6.210.0130.07320.68
5.6.200.0130.07321.29
5.6.190.0070.08721.39
5.6.180.0130.04721.32
5.6.170.0100.08321.25
5.6.160.0100.06021.37
5.6.150.0100.07321.24
5.6.140.0100.04321.36
5.6.130.0130.05721.25
5.6.120.0100.04321.44
5.6.110.0070.07721.31
5.6.100.0130.07721.29
5.6.90.0070.07721.40
5.6.80.0030.08320.83
5.6.70.0030.05320.82
5.6.60.0070.08720.73
5.6.50.0130.07320.70
5.6.40.0030.07720.59
5.6.30.0030.05720.70
5.6.20.0130.05720.64
5.6.10.0030.04320.58
5.6.00.0030.05020.60
5.5.380.0130.07320.59
5.5.370.0030.04720.64
5.5.360.0100.04020.73
5.5.350.0100.08020.66
5.5.340.0100.08021.16
5.5.330.0130.08321.09
5.5.320.0130.07721.20
5.5.310.0130.07021.04
5.5.300.0130.07021.06
5.5.290.0100.04721.06
5.5.280.0030.04721.20
5.5.270.0200.03321.26
5.5.260.0130.04321.07
5.5.250.0000.07320.95
5.5.240.0130.07320.47
5.5.230.0070.05320.57
5.5.220.0000.08320.41
5.5.210.0030.07020.38
5.5.200.0030.07720.54
5.5.190.0100.04720.46
5.5.180.0200.06320.52
5.5.160.0000.06320.43
5.5.150.0070.04320.51
5.5.140.0130.05020.43
5.5.130.0030.04020.43
5.5.120.0130.03320.46
5.5.110.0100.03320.49
5.5.100.0070.03720.44
5.5.90.0000.04020.23
5.5.80.0030.04320.32
5.5.70.0030.04020.34
5.5.60.0070.03720.43
5.5.50.0070.03720.49
5.5.40.0070.05020.41
5.5.30.0070.03320.32
5.5.20.0130.05020.41
5.5.10.0030.04020.30
5.5.00.0030.07320.30
5.4.450.0030.07019.37
5.4.440.0000.04319.54
5.4.430.0030.07319.66
5.4.420.0100.07019.47
5.4.410.0000.08319.56
5.4.400.0000.08019.34
5.4.390.0100.07319.29
5.4.380.0030.07319.48
5.4.370.0030.07019.36
5.4.360.0100.04319.37
5.4.350.0070.04719.17
5.4.340.0100.03319.34
5.4.320.0070.06319.23
5.4.310.0070.04319.34
5.4.300.0070.04019.37
5.4.290.0030.04019.39
5.4.280.0100.03319.34
5.4.270.0000.04019.17
5.4.260.0000.04019.19
5.4.250.0100.03019.36
5.4.240.0070.03719.36
5.4.230.0000.04019.19
5.4.220.0070.03719.29
5.4.210.0070.03719.22
5.4.200.0000.05319.27
5.4.190.0030.04019.18
5.4.180.0100.03319.28
5.4.170.0170.05719.31
5.4.160.0030.04319.30
5.4.150.0030.03719.17
5.4.140.0070.04716.58
5.4.130.0030.03716.65
5.4.120.0030.06016.55
5.4.110.0030.05016.63
5.4.100.0070.03316.55
5.4.90.0000.03716.73
5.4.80.0000.03716.59
5.4.70.0030.03716.68
5.4.60.0030.04716.62
5.4.50.0030.04316.70
5.4.40.0000.04016.64
5.4.30.0070.03316.75
5.4.20.0030.04016.68
5.4.10.0030.03316.70
5.4.00.0030.03315.93
5.3.290.0070.07315.78
5.3.280.0030.04015.78
5.3.270.0070.03015.78
5.3.260.0130.06015.78
5.3.250.0030.03715.78
5.3.240.0030.04015.78
5.3.230.0000.04015.78
5.3.220.0030.03715.78
5.3.210.0030.04015.78
5.3.200.0070.03315.78
5.3.190.0000.04315.78
5.3.180.0000.04015.78
5.3.170.0000.04315.78
5.3.160.0000.04315.78
5.3.150.0070.03315.78
5.3.140.0070.03315.78
5.3.130.0030.04315.78
5.3.120.0000.04015.78
5.3.110.0000.04015.78
5.3.100.0100.03015.78
5.3.90.0070.03015.78
5.3.80.0030.03715.78
5.3.70.0000.04015.78
5.3.60.0000.04315.78
5.3.50.0000.04015.78
5.3.40.0030.04015.78
5.3.30.0070.03315.78
5.3.20.0000.03315.78
5.3.10.0130.04015.78
5.3.00.0070.03315.78
5.2.170.0000.03015.78
5.2.160.0030.03015.78
5.2.150.0030.03315.78
5.2.140.0070.02315.78
5.2.130.0030.03015.78
5.2.120.0030.03315.78
5.2.110.0030.02715.78
5.2.100.0030.03015.78
5.2.90.0070.02715.78
5.2.80.0030.03015.78
5.2.70.0000.03315.78
5.2.60.0030.04315.78
5.2.50.0030.05015.78
5.2.40.0070.04315.78
5.2.30.0000.03715.78
5.2.20.0070.05715.78
5.2.10.0030.06315.78
5.2.00.0070.04315.78
5.1.60.0070.04715.78
5.1.50.0030.03015.78
5.1.40.0000.03315.78
5.1.30.0030.05715.78
5.1.20.0070.05315.78
5.1.10.0070.03715.78
5.1.00.0000.03315.78
5.0.50.0030.03015.78
5.0.40.0000.02315.78
5.0.30.0000.07015.78
5.0.20.0070.03315.78
5.0.10.0030.04315.78
5.0.00.0030.06015.78
4.4.90.0000.01715.78
4.4.80.0030.02015.78
4.4.70.0000.03715.78
4.4.60.0000.02315.78
4.4.50.0000.01315.78
4.4.40.0000.02715.78
4.4.30.0070.01715.78
4.4.20.0070.01715.78
4.4.10.0000.03715.78
4.4.00.0070.05015.78
4.3.110.0030.02715.78
4.3.100.0000.02715.78
4.3.90.0070.02715.78
4.3.80.0030.03715.78
4.3.70.0070.02715.78
4.3.60.0000.03715.78
4.3.50.0070.03315.78
4.3.40.0000.03315.78
4.3.30.0000.03715.78
4.3.20.0030.02315.78
4.3.10.0070.03315.78
4.3.00.0000.03315.78

preferences:
40.88 ms | 400 KiB | 5 Q