3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'b'; $b = 'c'; $c = 'd'; echo $$$a;

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)
8.3.60.0100.01018.18
8.3.50.0120.00521.27
8.3.40.0100.00718.54
8.3.30.0110.00318.79
8.3.20.0070.00020.21
8.3.10.0070.00022.10
8.3.00.0040.00422.34
8.2.180.0110.00716.63
8.2.170.0100.01022.96
8.2.160.0070.01020.43
8.2.150.0080.00024.18
8.2.140.0070.00724.66
8.2.130.0050.00326.16
8.2.120.0040.00419.54
8.2.110.0060.00319.25
8.2.100.0040.00717.91
8.2.90.0040.00419.07
8.2.80.0000.00817.97
8.2.70.0040.00417.50
8.2.60.0040.00417.92
8.2.50.0000.00818.07
8.2.40.0080.00018.28
8.2.30.0000.00717.98
8.2.20.0080.00017.64
8.2.10.0000.00717.79
8.2.00.0040.00417.54
8.1.280.0070.01425.92
8.1.270.0090.00020.40
8.1.260.0070.00026.35
8.1.250.0070.00028.09
8.1.240.0030.00621.29
8.1.230.0080.00417.42
8.1.220.0000.00817.75
8.1.210.0030.00518.77
8.1.200.0060.00317.23
8.1.190.0060.00317.35
8.1.180.0000.00718.74
8.1.170.0050.00318.50
8.1.160.0000.00822.12
8.1.150.0020.00518.62
8.1.140.0040.00417.37
8.1.130.0000.00717.73
8.1.120.0030.00317.38
8.1.110.0040.00417.46
8.1.100.0050.00317.42
8.1.90.0040.00417.34
8.1.80.0000.00717.43
8.1.70.0000.00717.44
8.1.60.0030.00517.58
8.1.50.0000.01017.39
8.1.40.0030.00617.39
8.1.30.0030.00617.63
8.1.20.0050.00317.63
8.1.10.0040.00417.36
8.1.00.0030.00617.43
8.0.300.0070.00418.77
8.0.290.0060.00316.63
8.0.280.0040.00418.44
8.0.270.0030.00317.23
8.0.260.0000.00616.80
8.0.250.0070.00016.88
8.0.240.0040.00416.91
8.0.230.0030.00317.00
8.0.220.0000.00716.77
8.0.210.0030.00316.87
8.0.200.0030.00316.90
8.0.190.0040.00417.04
8.0.180.0050.00316.85
8.0.170.0040.00416.81
8.0.160.0030.00516.75
8.0.150.0030.00316.88
8.0.140.0040.00416.83
8.0.130.0000.00513.28
8.0.120.0070.00016.72
8.0.110.0000.00716.89
8.0.100.0000.00716.94
8.0.90.0070.00016.74
8.0.80.0110.00516.91
8.0.70.0000.00716.71
8.0.60.0070.00016.74
8.0.50.0000.00816.99
8.0.30.0110.00916.82
8.0.20.0100.00717.40
8.0.10.0000.00717.07
8.0.00.0160.00116.59
7.4.330.0020.00215.10
7.4.320.0000.00616.57
7.4.300.0000.00716.59
7.4.290.0040.00416.43
7.4.280.0030.00316.48
7.4.270.0030.00316.46
7.4.260.0030.00316.40
7.4.250.0030.00516.38
7.4.240.0010.00716.51
7.4.230.0000.00716.48
7.4.220.0110.00716.46
7.4.210.0050.01216.43
7.4.200.0000.00716.69
7.4.190.0000.00716.36
7.4.160.0040.01216.53
7.4.150.0120.00617.40
7.4.140.0080.01117.86
7.4.130.0070.01216.51
7.4.120.0110.00916.36
7.4.110.0090.00816.36
7.4.100.0080.00816.52
7.4.90.0130.00516.62
7.4.80.0090.00919.39
7.4.70.0130.00616.55
7.4.60.0040.01116.23
7.4.50.0040.00416.39
7.4.40.0100.00722.77
7.4.30.0120.00416.54
7.4.00.0070.00714.82
7.3.330.0000.00513.11
7.3.320.0000.00512.97
7.3.310.0040.00416.18
7.3.300.0030.00316.23
7.3.290.0070.00716.15
7.3.280.0090.00716.16
7.3.270.0090.00617.40
7.3.260.0070.01016.30
7.3.250.0070.01116.52
7.3.240.0080.01416.49
7.3.230.0090.00916.48
7.3.210.0070.01016.26
7.3.200.0160.00519.39
7.3.190.0060.01516.23
7.3.180.0110.00416.36
7.3.170.0090.00616.28
7.3.160.0030.01316.33
7.3.120.0030.01014.83
7.3.10.0090.00616.59
7.3.00.0150.00416.24
7.2.330.0100.00716.61
7.2.320.0100.00716.38
7.2.310.0100.00616.31
7.2.300.0060.01016.67
7.2.290.0000.01616.59
7.2.130.0070.01016.78
7.2.120.0090.00816.72
7.2.110.0100.00916.56
7.2.100.0070.01116.79
7.2.90.0130.00616.65
7.2.80.0050.01316.73
7.2.70.0120.00616.75
7.2.60.0080.00916.55
7.2.50.0100.01316.56
7.2.40.0090.00816.70
7.2.30.0120.01016.77
7.2.20.0090.00616.56
7.2.10.0080.01116.43
7.2.00.0080.00817.63
7.1.250.0110.00115.64
7.1.100.0080.00417.96
7.1.70.0030.00316.86
7.1.60.0060.00617.14
7.1.50.0030.01316.79
7.1.00.0030.04022.26
7.0.200.0030.01016.81
7.0.140.0030.06721.97
7.0.60.0100.07720.06
7.0.50.0030.04017.88
7.0.40.0130.08020.30
7.0.30.0130.07020.18
7.0.20.0270.06320.13
7.0.10.0230.05720.18
7.0.00.0170.08020.19
5.6.280.0070.07020.90
5.6.210.0170.06320.70
5.6.200.0000.04718.12
5.6.190.0100.04320.55
5.6.180.4100.04720.57
5.6.170.0300.07720.52
5.6.160.0030.08720.42
5.6.150.0070.07718.12
5.6.140.0030.05318.07
5.6.130.0100.05018.21
5.6.120.0100.08720.99
5.6.110.0170.08720.97
5.6.100.0230.06720.88
5.6.90.0070.08021.12
5.6.80.0070.07320.39
5.6.70.0200.07320.39
5.5.350.0230.05320.40
5.5.340.0170.06017.97
5.5.330.0070.08320.19
5.5.320.0270.04720.21
5.5.310.0370.06320.50
5.5.300.0070.06717.88
5.5.290.0070.03717.94
5.5.280.0070.07320.88
5.5.270.0030.08320.78
5.5.260.0070.07320.64
5.5.250.0070.03720.45
5.5.240.0030.06320.03
5.4.450.0670.05719.43
5.4.440.0930.05319.27
5.4.430.0630.05719.54
5.4.420.0130.05019.51
5.4.410.0930.06719.34
5.4.400.0430.04718.51
5.4.390.0170.06018.63
5.4.380.0200.06318.44
5.4.370.0230.05018.70
5.4.360.0470.05018.64
5.4.350.0070.04611.97
5.4.340.0070.03911.96
5.4.320.0020.03912.45
5.4.310.0050.04012.45
5.4.300.0140.04012.45
5.4.290.0080.03412.45
5.4.280.0090.03912.34
5.4.270.0080.03912.34
5.4.260.0060.03712.34
5.4.250.0070.05318.73
5.4.240.0170.04718.84
5.4.230.0030.05718.89
5.4.220.0100.05018.77
5.4.210.0130.05318.89
5.4.200.0100.05018.94
5.4.190.0100.07319.02
5.4.180.0100.07018.99
5.4.170.0170.04718.94
5.4.160.0030.05318.73
5.4.150.0070.06318.85
5.4.140.0030.05716.27
5.4.130.0170.06016.23
5.4.120.0170.06316.44
5.4.110.0070.06716.36
5.4.100.0130.06016.41
5.4.90.0070.05016.34
5.4.80.0170.03716.48
5.4.70.0100.04716.27
5.4.60.0270.05016.48
5.4.50.0100.04316.43
5.4.40.0100.04316.38
5.4.30.0030.05716.32
5.4.20.0070.04716.32
5.4.10.0130.04316.32
5.4.00.0130.04015.73
5.3.290.0050.04012.80
5.3.280.0170.04014.29
5.3.270.0000.07314.30
5.3.260.0070.05314.60
5.3.250.0030.05714.69
5.3.240.0070.07314.61
5.3.230.0200.05014.61
5.3.220.0100.07314.57
5.3.210.0170.05714.59
5.3.200.0000.07714.58
5.3.190.0070.05014.40
5.3.180.0100.04714.41
5.3.170.0200.05714.57
5.3.160.0070.05014.57
5.3.150.0130.04314.57
5.3.140.0030.05014.56
5.3.130.0070.05714.61
5.3.120.0070.05314.40
5.3.110.0030.05714.64
5.3.100.0100.04714.18
5.3.90.0070.05013.88
5.3.80.0170.04713.79
5.3.70.0030.05014.02
5.3.60.0100.06014.00
5.3.50.0200.04013.96
5.3.40.0100.05014.10
5.3.30.0100.04713.68
5.3.20.0070.05313.53
5.3.10.0100.06313.53
5.3.00.0070.05013.48
5.2.170.0070.03711.14
5.2.160.0070.03711.29
5.2.150.0100.05711.04
5.2.140.0030.04011.07
5.2.130.0000.04311.10
5.2.120.0000.04311.16
5.2.110.0130.04011.10
5.2.100.0000.04311.01
5.2.90.0100.03710.85
5.2.80.0000.04711.10
5.2.70.0030.04311.23
5.2.60.0070.03710.81
5.2.50.0000.04311.13
5.2.40.0070.04010.75
5.2.30.0070.05310.80
5.2.20.0070.03710.79
5.2.10.0070.03710.93
5.2.00.0030.04010.79
5.1.60.0070.0309.93
5.1.50.0030.03310.03
5.1.40.0070.05010.04
5.1.30.0100.04710.26
5.1.20.0000.04010.40
5.1.10.0100.0479.83
5.1.00.0030.03710.29
5.0.50.0000.0308.45
5.0.40.0000.0308.29
5.0.30.0030.0408.06
5.0.20.0030.0278.19
5.0.10.0030.0278.22
5.0.00.0000.0437.98
4.4.90.0030.0206.29
4.4.80.0100.0276.29
4.4.70.0000.0306.29
4.4.60.0030.0276.29
4.4.50.0030.0206.29
4.4.40.0000.0376.29
4.4.30.0000.0236.29
4.4.20.0000.0236.29
4.4.10.0000.0236.29
4.4.00.0000.0376.29
4.3.110.0100.0176.29
4.3.100.0000.0236.29
4.3.90.0070.0236.29
4.3.80.0000.0336.29
4.3.70.0000.0236.29
4.3.60.0000.0236.29
4.3.50.0030.0206.29
4.3.40.0030.0306.29
4.3.30.0000.0276.29
4.3.20.0070.0236.29
4.3.10.0000.0236.29
4.3.00.0100.0237.09

preferences:
38.21 ms | 401 KiB | 5 Q