3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = 129; $y = 1; $m = microtime(true); $y = 1 << ceil(log($x, 2)); echo ($m - 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)
7.2.00.0000.01319.73
7.1.70.0050.00217.43
7.1.60.0070.01719.24
7.1.50.0100.01317.24
7.1.00.0070.07022.67
7.0.200.0000.01017.13
7.0.140.0070.07322.36
7.0.100.0130.08020.23
7.0.90.0070.04020.40
7.0.80.0100.06020.19
7.0.70.0100.04020.19
7.0.60.0170.04320.25
7.0.50.0230.04020.59
7.0.40.0070.03720.38
7.0.30.0130.07720.46
7.0.20.0030.08320.39
7.0.10.0130.07720.45
7.0.00.0070.07720.45
5.6.280.0000.07721.20
5.6.250.0030.05721.07
5.6.240.0100.05320.96
5.6.230.0070.05020.95
5.6.220.0070.04320.93
5.6.210.0030.04020.95
5.6.200.0130.04021.40
5.6.190.0070.04321.37
5.6.180.0100.05021.37
5.6.170.0100.04321.25
5.6.160.0000.05721.30
5.6.150.0130.07321.35
5.6.140.0100.08021.37
5.6.130.0030.09021.39
5.6.120.0170.07321.30
5.6.110.0130.08021.24
5.6.100.0000.06321.29
5.6.90.0170.07321.44
5.6.80.0100.06720.57
5.6.70.0100.06720.75
5.6.60.0070.07720.79
5.6.50.0100.08020.66
5.6.40.0070.07720.60
5.6.30.0070.07320.65
5.6.20.0070.07720.65
5.6.10.0100.07720.59
5.6.00.0100.07720.74
5.5.380.0030.04020.71
5.5.370.0130.03020.66
5.5.360.0070.03720.61
5.5.350.0030.04020.68
5.5.340.0030.05721.19
5.5.330.0070.04721.20
5.5.320.0030.06021.15
5.5.310.0000.08721.17
5.5.300.0070.08020.92
5.5.290.0170.04021.11
5.5.280.0030.07321.08
5.5.270.0070.08021.16
5.5.260.0100.08321.07
5.5.250.0130.07020.92
5.5.240.0100.07320.57
5.5.230.0030.08720.52
5.5.220.0070.07720.56
5.5.210.0130.07020.46
5.5.200.0100.07320.51
5.5.190.0070.07720.55
5.5.180.0000.05320.52
5.5.160.0000.05720.39
5.5.150.0070.07020.46
5.5.140.0100.07320.46
5.5.130.0070.07320.54
5.5.120.0070.07020.39
5.5.110.0200.06320.46
5.5.100.0070.07320.45
5.5.90.0100.05720.44
5.5.80.0000.08320.36
5.5.70.0130.07320.32
5.5.60.0070.04020.35
5.5.50.0030.05020.44
5.5.40.0100.05020.34
5.5.30.0030.08320.36
5.5.20.0070.08020.21
5.5.10.0070.08020.28
5.5.00.0070.07320.34
5.4.450.0030.08319.61
5.4.440.0230.06319.62
5.4.430.0070.07719.66
5.4.420.0100.07319.63
5.4.410.0070.07319.39
5.4.400.0100.06719.40
5.4.390.0070.08019.15
5.4.380.0070.07719.23
5.4.370.0030.04719.13
5.4.360.0130.04719.48
5.4.350.0100.07319.40
5.4.340.0130.07019.34
5.4.320.0130.06719.38
5.4.310.0070.07319.23
5.4.300.0030.08319.38
5.4.290.0130.07319.20
5.4.280.0030.08019.30
5.4.270.0030.07719.39
5.4.260.0100.07019.35
5.4.250.0030.07719.48
5.4.240.0000.05019.14
5.4.230.0100.06719.21
5.4.220.0000.07319.15
5.4.210.0170.06019.34
5.4.200.0070.07719.03
5.4.190.0070.07019.22
5.4.180.0130.06319.37
5.4.170.0100.07319.36
5.4.160.0100.06019.27
5.4.150.0030.08019.18
5.4.140.0070.07716.61
5.4.130.0000.08016.63
5.4.120.0100.06316.53
5.4.110.0030.07316.61
5.4.100.0030.07316.55
5.4.90.0070.05016.56
5.4.80.0030.06016.55
5.4.70.0030.07016.73
5.4.60.0030.06316.59
5.4.50.0070.07016.59
5.4.40.0100.04716.66
5.4.30.0100.06716.53
5.4.20.0100.04016.58
5.4.10.0170.05716.58
5.4.00.0070.06716.06
5.3.290.0200.06014.88
5.3.280.0030.08014.83
5.3.270.0200.03714.82
5.3.260.0070.06314.71
5.3.250.0030.07314.77
5.3.240.0170.07014.91
5.3.230.0200.03714.82
5.3.220.0100.06714.80
5.3.210.0130.07314.81
5.3.200.0030.07714.77
5.3.190.0030.08014.75
5.3.180.0070.07314.77
5.3.170.0030.07014.82
5.3.160.0000.06014.80
5.3.150.0130.07014.77
5.3.140.0000.05314.66
5.3.130.0030.07714.79
5.3.120.0130.06714.62
5.3.110.0030.06714.65
5.3.100.0030.05714.11
5.3.90.0070.07314.27
5.3.80.0000.07014.26
5.3.70.0070.07714.22
5.3.60.0070.07014.11
5.3.50.0030.07714.14
5.3.40.0130.07014.20
5.3.30.0070.06314.18
5.3.20.0030.07313.88
5.3.10.0130.06713.77
5.3.00.0100.06713.94
5.2.170.0030.06311.31
5.2.160.0070.05711.42
5.2.150.0100.05711.39
5.2.140.0130.06011.34
5.2.130.0030.06311.35
5.2.120.0030.06311.26
5.2.110.0030.05311.39
5.2.100.0100.05011.33
5.2.90.0030.06011.42
5.2.80.0000.07011.19
5.2.70.0030.05311.21
5.2.60.0070.05711.36
5.2.50.0070.06311.32
5.2.40.0130.05711.23
5.2.30.0200.04711.13
5.2.20.0000.06311.25
5.2.10.0070.06011.13
5.2.00.0070.05311.13
5.1.60.0030.05011.13
5.1.50.0170.02711.13
5.1.40.0030.03011.13
5.1.30.0070.05311.13
5.1.20.0000.06011.13
5.1.10.0030.05311.13
5.1.00.0100.05011.13
5.0.50.0100.04011.13
5.0.40.0030.04711.13
5.0.30.0000.07011.13
5.0.20.0070.04311.13
5.0.10.0100.03711.13
5.0.00.0070.05711.13
4.4.90.0000.03711.13
4.4.80.0070.03011.13
4.4.70.0000.03711.13
4.4.60.0070.03311.13
4.4.50.0000.03711.13
4.4.40.0070.03711.13
4.4.30.0030.03711.13
4.4.20.0000.03711.13
4.4.10.0000.03711.13
4.4.00.0000.05711.13
4.3.110.0000.04011.13
4.3.100.0030.02311.13
4.3.90.0070.03311.13
4.3.80.0030.05311.13
4.3.70.0070.03011.13
4.3.60.0030.03311.13
4.3.50.0070.02711.13
4.3.40.0030.04711.13
4.3.30.0000.03311.13
4.3.20.0000.03711.13
4.3.10.0000.03711.13
4.3.00.0000.03011.13

preferences:
36.74 ms | 401 KiB | 5 Q