3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = 129; $y = 1; $m = microtime(true); $y = 1 << ceil(log($x, 2)); echo microtime(true), "\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)
7.2.00.0190.00319.66
7.1.70.0030.00717.54
7.1.60.0060.01919.24
7.1.50.0070.01717.29
7.1.00.0070.07022.67
7.0.200.0030.00616.79
7.0.140.0070.07022.29
7.0.100.0130.08320.14
7.0.90.0100.07320.16
7.0.80.0100.07020.21
7.0.70.0130.06720.19
7.0.60.0030.08720.12
7.0.50.0100.08720.56
7.0.40.0070.08320.34
7.0.30.0100.08320.38
7.0.20.0100.07720.32
7.0.10.0130.09020.40
7.0.00.0030.08720.35
5.6.280.0070.07021.31
5.6.250.0030.09020.88
5.6.240.0130.07720.91
5.6.230.0170.06020.94
5.6.220.0130.07320.89
5.6.210.0030.08021.04
5.6.200.0070.08321.33
5.6.190.0100.07021.39
5.6.180.0170.07721.37
5.6.170.0070.08021.34
5.6.160.0070.08021.45
5.6.150.0100.08021.33
5.6.140.0100.08721.23
5.6.130.0030.09021.30
5.6.120.0130.08321.28
5.6.110.0070.08021.44
5.6.100.0170.03721.30
5.6.90.0070.08721.39
5.6.80.0030.07720.62
5.6.70.0070.07320.59
5.6.60.0070.07320.69
5.6.50.0030.05720.69
5.6.40.0070.07320.71
5.6.30.0100.08020.65
5.6.20.0070.07720.66
5.6.10.0100.07720.77
5.6.00.0070.07320.57
5.5.380.0000.04720.63
5.5.370.0100.06020.75
5.5.360.0100.07720.71
5.5.350.0130.07320.73
5.5.340.0130.07321.08
5.5.330.0030.08321.18
5.5.320.0070.07321.12
5.5.310.0070.05721.18
5.5.300.0000.08321.17
5.5.290.0030.08721.17
5.5.280.0070.08021.17
5.5.270.0130.08321.11
5.5.260.0100.09021.19
5.5.250.0170.06320.91
5.5.240.0030.08020.46
5.5.230.0130.08020.53
5.5.220.0030.07720.49
5.5.210.0030.09020.49
5.5.200.0100.08020.52
5.5.190.0130.05320.50
5.5.180.0130.06720.49
5.5.160.0030.08320.49
5.5.150.0070.06320.54
5.5.140.0070.06720.54
5.5.130.0170.06720.51
5.5.120.0070.04020.40
5.5.110.0070.05020.40
5.5.100.0030.07020.45
5.5.90.0030.08020.35
5.5.80.0070.07020.32
5.5.70.0070.06320.34
5.5.60.0070.08020.43
5.5.50.0100.07320.42
5.5.40.0000.08320.36
5.5.30.0170.06320.32
5.5.20.0000.09020.28
5.5.10.0130.09320.34
5.5.00.0100.06320.38
5.4.450.0130.08719.63
5.4.440.0100.04319.69
5.4.430.0070.07719.60
5.4.420.0100.06719.50
5.4.410.0130.07019.41
5.4.400.0100.07319.13
5.4.390.0030.07719.23
5.4.380.0070.07319.39
5.4.370.0030.07019.28
5.4.360.0170.06019.39
5.4.350.0070.08019.15
5.4.340.0070.07019.35
5.4.320.0170.06019.14
5.4.310.0100.05019.38
5.4.300.0100.07319.37
5.4.290.0030.07719.27
5.4.280.0070.06719.17
5.4.270.0100.06719.03
5.4.260.0170.07319.19
5.4.250.0100.07019.33
5.4.240.0030.06019.29
5.4.230.0070.08019.11
5.4.220.0000.08719.31
5.4.210.0030.05019.29
5.4.200.0070.07719.34
5.4.190.0070.06719.14
5.4.180.0070.08019.18
5.4.170.0030.04319.30
5.4.160.0070.07019.35
5.4.150.0000.09319.25
5.4.140.0030.06316.64
5.4.130.0000.08716.50
5.4.120.0070.04316.54
5.4.110.0100.07016.63
5.4.100.0070.06716.52
5.4.90.0030.07316.52
5.4.80.0170.04716.68
5.4.70.0070.07016.55
5.4.60.0070.07016.62
5.4.50.0100.07016.58
5.4.40.0070.07016.64
5.4.30.0170.06316.56
5.4.20.0030.07316.66
5.4.10.0100.07316.63
5.4.00.0000.08015.95
5.3.290.0000.06014.87
5.3.280.0000.08714.82
5.3.270.0030.06714.86
5.3.260.0100.07314.71
5.3.250.0100.06314.72
5.3.240.0070.08014.79
5.3.230.0070.07014.75
5.3.220.0070.07314.68
5.3.210.0130.04014.75
5.3.200.0070.07314.67
5.3.190.0030.08014.77
5.3.180.0030.07014.75
5.3.170.0100.07314.82
5.3.160.0130.07014.80
5.3.150.0170.06314.80
5.3.140.0100.07314.74
5.3.130.0030.08314.75
5.3.120.0070.07314.80
5.3.110.0070.08014.85
5.3.100.0200.06714.14
5.3.90.0100.05014.22
5.3.80.0130.06014.21
5.3.70.0070.07714.13
5.3.60.0130.07014.21
5.3.50.0130.04714.02
5.3.40.0000.07714.20
5.3.30.0030.07314.07
5.3.20.0100.07013.80
5.3.10.0100.06713.84
5.3.00.0100.06713.64
5.2.170.0030.06011.64
5.2.160.0100.05711.64
5.2.150.0130.05311.64
5.2.140.0000.06311.64
5.2.130.0100.05711.64
5.2.120.0170.04711.64
5.2.110.0000.06711.64
5.2.100.0070.06011.64
5.2.90.0100.05711.64
5.2.80.0070.03311.64
5.2.70.0070.05311.64
5.2.60.0130.05711.64
5.2.50.0000.06311.64
5.2.40.0100.04011.64
5.2.30.0100.05311.64
5.2.20.0130.05011.64
5.2.10.0030.06311.64
5.2.00.0030.06011.64
5.1.60.0070.04011.64
5.1.50.0100.04711.64
5.1.40.0000.05711.64
5.1.30.0000.05311.64
5.1.20.0000.06011.64
5.1.10.0100.05011.64
5.1.00.0070.05011.64
5.0.50.0000.04711.64
5.0.40.0030.02711.64
5.0.30.0030.06311.64
5.0.20.0000.04711.64
5.0.10.0030.04311.64
5.0.00.0000.04711.64
4.4.90.0070.03011.64
4.4.80.0000.02311.64
4.4.70.0070.03311.64
4.4.60.0030.03311.64
4.4.50.0030.03311.64
4.4.40.0030.04711.64
4.4.30.0030.03011.64
4.4.20.0030.03311.64
4.4.10.0030.03311.64
4.4.00.0000.05711.64
4.3.110.0000.03711.64
4.3.100.0030.03311.64
4.3.90.0000.03711.64
4.3.80.0030.05311.64
4.3.70.0030.03311.64
4.3.60.0000.03711.64
4.3.50.0030.03311.64
4.3.40.0000.05311.64
4.3.30.0000.03711.64
4.3.20.0070.03311.64
4.3.10.0000.03711.64
4.3.00.0000.03011.64

preferences:
30.62 ms | 400 KiB | 5 Q