3v4l.org

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

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)
8.3.60.0120.00916.75
8.3.50.0090.01016.59
8.3.40.0040.01118.75
8.3.30.0120.00318.57
8.3.20.0000.00818.65
8.3.10.0040.00420.44
8.3.00.0030.00519.38
8.2.180.0110.00716.63
8.2.170.0170.00322.96
8.2.160.0090.00618.80
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0090.00020.49
8.2.110.0070.00320.47
8.2.100.0040.00717.84
8.2.90.0080.00019.05
8.2.80.0000.00817.97
8.2.70.0030.00617.63
8.2.60.0080.00317.93
8.2.50.0000.00818.07
8.2.40.0060.00318.16
8.2.30.0040.00418.04
8.2.20.0000.00917.73
8.2.10.0000.00817.75
8.2.00.0040.00417.78
8.1.280.0070.00725.92
8.1.270.0070.00023.99
8.1.260.0040.00426.35
8.1.250.0030.00528.09
8.1.240.0030.00623.97
8.1.230.0030.00917.42
8.1.220.0040.00417.79
8.1.210.0070.00318.77
8.1.200.0070.00317.35
8.1.190.0070.00017.66
8.1.180.0080.00018.10
8.1.170.0020.00518.89
8.1.160.0000.00718.88
8.1.150.0040.00418.56
8.1.140.0040.00417.43
8.1.130.0030.00317.82
8.1.120.0000.00717.50
8.1.110.0040.00417.33
8.1.100.0080.00017.42
8.1.90.0050.00217.42
8.1.80.0000.00717.48
8.1.70.0030.00517.45
8.1.60.0080.00017.58
8.1.50.0050.00217.38
8.1.40.0050.00317.47
8.1.30.0000.00817.50
8.1.20.0030.00617.51
8.1.10.0060.00317.45
8.1.00.0040.00417.49
8.0.300.0050.00218.77
8.0.290.0000.00816.88
8.0.280.0000.00718.42
8.0.270.0040.00417.25
8.0.260.0030.00316.87
8.0.250.0000.00817.05
8.0.240.0070.00016.91
8.0.230.0000.00716.88
8.0.220.0000.00716.90
8.0.210.0030.00316.96
8.0.200.0030.00316.88
8.0.190.0040.00416.91
8.0.180.0000.00816.84
8.0.170.0050.00316.91
8.0.160.0000.00716.97
8.0.150.0000.00716.95
8.0.140.0040.00416.85
8.0.130.0050.00013.33
8.0.120.0030.00516.92
8.0.110.0070.00016.75
8.0.100.0000.00716.98
8.0.90.0040.00416.91
8.0.80.0120.00917.00
8.0.70.0040.00317.01
8.0.60.0040.00416.80
8.0.50.0040.00316.90
8.0.30.0100.01017.07
8.0.20.0110.00816.91
8.0.10.0040.00417.02
8.0.00.0120.00916.57
7.4.330.0050.00012.96
7.4.320.0060.00016.53
7.4.300.0030.00316.41
7.4.290.0040.00416.59
7.4.280.0000.00816.44
7.4.270.0030.00316.64
7.4.260.0060.00013.21
7.4.250.0080.00016.46
7.4.240.0000.00716.57
7.4.230.0070.00016.48
7.4.220.0100.01416.50
7.4.210.0120.00316.53
7.4.200.0000.00716.66
7.4.190.0030.00316.64
7.4.160.0090.00616.38
7.4.150.0140.01016.72
7.4.140.0200.00516.52
7.4.130.0080.00816.45
7.4.120.0110.00716.39
7.4.110.0170.00016.49
7.4.100.0120.00616.65
7.4.90.0100.01016.52
7.4.80.0030.01419.39
7.4.70.0080.00816.50
7.4.60.0030.01316.52
7.4.50.0080.00016.45
7.4.40.0110.00316.55
7.4.30.0040.01116.49
7.4.00.0160.00015.06
7.3.330.0000.00613.01
7.3.320.0030.00313.07
7.3.310.0040.00416.33
7.3.300.0030.00316.23
7.3.290.0050.00816.23
7.3.280.0130.00416.29
7.3.270.0060.01116.26
7.3.260.0100.01016.46
7.3.250.0110.00816.40
7.3.240.0090.00616.32
7.3.230.0110.00816.61
7.3.210.0100.00716.27
7.3.200.0100.00716.18
7.3.190.0070.01016.50
7.3.180.0090.00916.43
7.3.170.0060.00916.54
7.3.160.0090.01016.47
7.3.120.0060.00914.86
7.2.330.0090.00916.73
7.2.320.0070.01016.64
7.2.310.0100.01316.45
7.2.300.0130.01016.36
7.2.290.0120.01116.50
7.2.60.0050.00516.64
7.2.00.0000.01519.22
7.1.200.0030.01015.56
7.1.100.0070.00717.79
7.1.70.0040.00416.80
7.1.60.0110.01119.17
7.1.50.0090.01516.70
7.1.00.0000.07322.33
7.0.200.0590.00414.44
7.0.140.0030.07321.94
7.0.120.0000.07322.03
7.0.60.0100.06319.89
7.0.50.0100.07017.86
7.0.40.0030.04720.38
7.0.30.0230.04320.04
7.0.20.0300.04320.20
7.0.10.0000.08320.04
7.0.00.0070.09020.05
5.6.280.0100.06720.76
5.6.210.0100.07720.48
5.6.200.0000.04318.19
5.6.190.0030.07020.42
5.6.180.0230.04320.64
5.6.170.0200.04020.51
5.6.160.0070.05720.32
5.6.150.0100.07718.17
5.6.140.0130.07018.21
5.6.130.0100.04718.18
5.6.120.0100.08720.99
5.6.110.0070.08320.98
5.6.100.0030.07720.95
5.6.90.0100.06721.03
5.6.80.0070.07320.38
5.6.70.4170.02720.31
5.5.350.0130.08020.40
5.5.340.0030.08318.05
5.5.330.0100.04320.40
5.5.320.0330.04020.13
5.5.310.0230.06720.24
5.5.300.0070.04018.02
5.5.290.0070.03717.95
5.5.280.0170.05320.82
5.5.270.0100.08020.64
5.5.260.0100.07020.79
5.5.250.0100.07720.68
5.5.240.0130.03020.28
5.4.450.0170.06019.23
5.4.440.0200.04719.48
5.4.430.0270.03019.24
5.4.420.0130.06719.13
5.4.410.0370.06019.10
5.4.400.0230.04719.09
5.4.390.0130.05318.81
5.4.380.0200.05019.11
5.4.370.0230.07319.08
5.4.360.0230.04319.09
5.4.350.0170.04019.12
5.4.340.0170.04718.88
5.4.320.0270.07018.88
5.4.310.0170.05018.92
5.4.300.0270.05018.82
5.4.290.0200.05319.09
5.4.280.0170.05718.80
5.4.270.0300.07019.06
5.4.260.0230.06719.16
5.4.250.0200.04318.80
5.4.240.0200.07319.16
5.4.230.0170.07719.25
5.4.220.0270.07019.21
5.4.210.0330.07019.03
5.4.200.0200.04019.23
5.4.190.0200.05718.88
5.4.180.0270.04718.79
5.4.170.0300.07318.77
5.4.160.0230.04319.22
5.4.150.0230.03318.91
5.4.140.0230.05716.19
5.4.130.0270.04316.30
5.4.120.0170.04016.44
5.4.110.0200.07016.41
5.4.100.0230.06016.39
5.4.90.0270.07016.53
5.4.80.0230.05316.37
5.4.70.0300.03016.48
5.4.60.0330.04316.19
5.4.50.0270.05716.18
5.4.40.0270.04316.41
5.4.30.0200.03716.04
5.4.20.0270.06716.32
5.4.10.0130.05016.36
5.4.00.0130.06015.73
5.3.290.0170.04014.49
5.3.280.0130.04314.53
5.3.270.0230.07714.57
5.3.260.0230.07014.44
5.3.250.0270.07014.48
5.3.240.0230.06014.46
5.3.230.0230.05014.45
5.3.220.0330.06014.59
5.3.210.0170.04014.65
5.3.200.0200.04014.47
5.3.190.0300.05014.65
5.3.180.0230.06714.46
5.3.170.0230.05314.51
5.3.160.0270.06314.40
5.3.150.0270.06714.51
5.3.140.0200.04014.53
5.3.130.0130.04714.38
5.3.120.0230.07714.45
5.3.110.0230.05714.45
5.3.100.0230.07713.87
5.3.90.0230.05013.94
5.3.80.0200.07713.79
5.3.70.0170.05713.84
5.3.60.0200.04714.10
5.3.50.0100.05313.82
5.3.40.0270.07013.80
5.3.30.0170.07013.74
5.3.20.0300.06013.53
5.3.10.0200.04313.43
5.3.00.0230.06013.43
5.2.170.0200.05713.22
5.2.160.0130.06713.22
5.2.150.0170.04313.22
5.2.140.0230.05713.22
5.2.130.0230.05013.22
5.2.120.0170.04313.22
5.2.110.0200.06013.22
5.2.100.0200.05313.22
5.2.90.0200.06013.22
5.2.80.0130.06013.22
5.2.70.0170.04013.22
5.2.60.0230.05313.22
5.2.50.0200.05013.22
5.2.40.0200.03313.22
5.2.30.0200.05313.22
5.2.20.0230.04013.22
5.2.10.0130.03713.22
5.2.00.0200.02313.22
5.1.60.0130.03013.22
5.1.50.0100.02313.22
5.1.40.0130.02713.22
5.1.30.0100.02713.22
5.1.20.0070.02713.22
5.1.10.0170.02313.22
5.1.00.0130.02313.22
5.0.50.0030.02013.22
5.0.40.0030.02013.22
5.0.30.0030.03013.22
5.0.20.0070.02013.22
5.0.10.0070.01713.22
5.0.00.0100.03013.22
4.4.90.0070.03313.22
4.4.80.0170.01013.22
4.4.70.0070.03313.22
4.4.60.0130.01313.22
4.4.50.0070.01713.22
4.4.40.0030.02713.22
4.4.30.0030.01713.22
4.4.20.0070.01713.22
4.4.10.0070.01313.22
4.4.00.0070.02313.22
4.3.110.0070.01313.22
4.3.100.0030.01313.22
4.3.90.0000.02313.22
4.3.80.0070.02313.22
4.3.70.0070.01313.22
4.3.60.0130.00713.22
4.3.50.0070.01313.22
4.3.40.0030.02713.22
4.3.30.0030.01313.22
4.3.20.0000.01713.22
4.3.10.0030.01313.22
4.3.00.0030.01313.22

preferences:
41.39 ms | 401 KiB | 5 Q