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)
8.3.70.0180.00016.75
8.3.60.0140.00316.50
8.3.50.0120.00722.82
8.3.40.0160.00318.66
8.3.30.0030.01018.89
8.3.20.0040.00420.04
8.3.10.0080.00023.50
8.3.00.0050.00319.26
8.2.180.0110.01116.37
8.2.170.0040.01122.96
8.2.160.0140.00020.44
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0000.00821.00
8.2.110.0090.00022.04
8.2.100.0150.00019.64
8.2.90.0070.00019.09
8.2.80.0040.00417.97
8.2.70.0080.00017.61
8.2.60.0000.00717.92
8.2.50.0000.00818.07
8.2.40.0070.00418.22
8.2.30.0070.00017.94
8.2.20.0070.00017.73
8.2.10.0040.00418.10
8.2.00.0040.00417.71
8.1.280.0040.01125.92
8.1.270.0030.00523.92
8.1.260.0040.00426.35
8.1.250.0050.00228.09
8.1.240.0040.00423.65
8.1.230.0070.00419.16
8.1.220.0070.00017.74
8.1.210.0080.00018.77
8.1.200.0060.00317.23
8.1.190.0060.00317.10
8.1.180.0030.00518.10
8.1.170.0000.00818.63
8.1.160.0040.00421.96
8.1.150.0080.00018.78
8.1.140.0020.00517.50
8.1.130.0080.00017.82
8.1.120.0040.00417.37
8.1.110.0000.00717.50
8.1.100.0030.00317.43
8.1.90.0000.00717.44
8.1.80.0030.00317.43
8.1.70.0030.00317.40
8.1.60.0040.00417.45
8.1.50.0040.00417.58
8.1.40.0030.00617.54
8.1.30.0030.00617.53
8.1.20.0000.00717.61
8.1.10.0040.00417.34
8.1.00.0000.00817.45
8.0.300.0080.00018.77
8.0.290.0040.00416.75
8.0.280.0030.00318.42
8.0.270.0080.00317.23
8.0.260.0030.00317.24
8.0.250.0020.00516.83
8.0.240.0040.00416.86
8.0.230.0030.00316.85
8.0.220.0000.00716.79
8.0.210.0080.00016.89
8.0.200.0030.00316.92
8.0.190.0040.00416.98
8.0.180.0000.00816.93
8.0.170.0040.00416.91
8.0.160.0070.00016.75
8.0.150.0000.00716.90
8.0.140.0070.00016.72
8.0.130.0000.00513.35
8.0.120.0080.00016.84
8.0.110.0030.00516.93
8.0.100.0050.00316.88
8.0.90.0040.00416.77
8.0.80.0060.00916.83
8.0.70.0040.00416.84
8.0.60.0000.00816.98
8.0.50.0000.00716.81
8.0.30.0080.01517.16
8.0.20.0090.01117.40
8.0.10.0040.00416.92
8.0.00.0080.01116.66
7.4.330.0030.00315.20
7.4.320.0030.00316.54
7.4.300.0000.00616.59
7.4.290.0030.00516.48
7.4.280.0040.00416.57
7.4.270.0070.00016.57
7.4.260.0040.00416.50
7.4.250.0040.00416.58
7.4.240.0050.00316.58
7.4.230.0030.00316.57
7.4.220.0030.01616.50
7.4.210.0100.01016.66
7.4.200.0030.00416.69
7.4.160.0090.00916.65
7.4.150.0090.00917.40
7.4.140.0080.01017.86
7.4.130.0130.00416.42
7.4.120.0090.00816.54
7.4.110.0060.01016.44
7.4.100.0100.00716.44
7.4.90.0130.00716.30
7.4.80.0160.00619.39
7.4.70.0070.01416.40
7.4.60.0070.01016.46
7.4.50.0050.00316.32
7.4.40.0150.00616.45
7.4.30.0100.00716.47
7.4.00.0040.01215.15
7.3.330.0030.00313.06
7.3.320.0060.00012.97
7.3.310.0000.00816.34
7.3.300.0070.00016.16
7.3.290.0030.01116.16
7.3.280.0060.01116.27
7.3.270.0030.01317.40
7.3.260.0080.00816.34
7.3.250.0100.00916.24
7.3.240.0120.00416.45
7.3.230.0040.01216.48
7.3.210.0060.01216.32
7.3.200.0170.00019.39
7.3.190.0120.00916.28
7.3.180.0080.00816.30
7.3.170.0060.00916.59
7.3.160.0100.00616.47
7.3.10.0090.00916.59
7.3.00.0090.00916.41
7.2.330.0040.01516.66
7.2.320.0070.01316.53
7.2.310.0060.00916.59
7.2.300.0100.00716.65
7.2.290.0080.01116.55
7.2.130.0080.00816.64
7.2.120.0050.00816.49
7.2.110.0060.00616.51
7.2.100.0040.01116.66
7.2.90.0060.00516.71
7.2.80.0120.00316.77
7.2.70.0040.00716.69
7.2.60.0060.00516.61
7.2.50.0050.00516.68
7.2.40.0060.00916.79
7.2.30.0050.01016.80
7.2.20.0020.00816.90
7.2.10.0020.01016.89
7.2.00.0100.00717.38
7.1.250.0050.00815.65
7.1.100.0060.00617.74
7.1.70.0030.00517.07
7.1.60.0130.01319.40
7.1.50.0080.00416.82
7.1.00.0030.07722.48
7.0.200.0040.00416.55
7.0.140.0070.06722.08
7.0.60.0100.08019.93
7.0.50.0070.05717.80
7.0.40.0130.03720.05
7.0.30.0130.05320.30
7.0.20.0270.07020.16
7.0.10.0070.05020.17
7.0.00.0130.07720.19
5.6.280.0070.07021.07
5.6.210.0100.04720.55
5.6.200.0130.07718.24
5.6.190.0070.05720.27
5.6.180.0200.05720.77
5.6.170.0300.07720.35
5.6.160.0070.09020.35
5.6.150.0100.03718.22
5.6.140.0030.08018.20
5.6.130.0100.07018.11
5.6.120.0170.07320.75
5.6.110.0030.04320.99
5.6.100.0200.03021.04
5.6.90.0000.08721.11
5.6.80.0030.08720.41
5.5.350.0230.07720.43
5.5.340.0130.08018.02
5.5.330.0070.06320.34
5.5.320.0370.05320.22
5.5.310.0130.04320.17
5.5.300.0070.04017.92
5.5.290.0030.08317.89
5.5.280.0000.08720.75
5.5.270.0130.07720.95
5.5.260.0170.05020.79
5.5.250.0070.04020.67
5.5.240.0200.07020.35
5.4.450.0000.04319.25
5.4.440.0000.09019.13
5.4.430.0030.08319.57
5.4.420.0030.04719.54
5.4.410.0070.04019.07
5.4.400.0030.07318.92
5.4.390.0000.04019.24
5.4.380.0070.05018.93
5.4.370.0070.05019.06
5.4.360.0000.04719.13
5.4.350.0000.04319.24
5.4.340.0000.04319.10
5.4.320.0070.03319.09
5.4.310.0030.03319.25
5.4.300.0030.03318.93
5.4.290.0030.03718.88
5.4.280.0000.04018.80
5.4.270.0030.06018.81
5.4.260.0000.04319.15
5.4.250.0030.07719.09
5.4.240.0030.03719.24
5.4.230.0000.03718.88
5.4.220.0030.03719.07
5.4.210.0000.03718.78
5.4.200.0000.03718.92
5.4.190.0030.03718.79
5.4.180.0000.04319.07
5.4.170.0000.03719.23
5.4.160.0000.03718.79
5.4.150.0000.04019.19
5.4.140.0030.03316.34
5.4.130.0000.04316.30
5.4.120.0000.03316.29
5.4.110.0000.03716.45
5.4.100.0000.03316.42
5.4.90.0030.03716.45
5.4.80.0000.03316.20
5.4.70.0000.03316.46
5.4.60.0000.03316.43
5.4.50.0030.03316.31
5.4.40.0200.02316.36
5.4.30.0000.03716.41
5.4.20.0030.04016.47
5.4.10.0070.05316.39
5.4.00.0070.05015.82
5.3.290.0000.04014.61
5.3.280.0100.03314.44
5.3.270.0000.03714.43
5.3.260.0030.03314.45
5.3.250.0000.04714.53
5.3.240.0000.03714.45
5.3.230.0000.03714.44
5.3.220.0000.03714.51
5.3.210.0000.04014.65
5.3.200.0030.03314.55
5.3.190.0000.03714.59
5.3.180.0000.03714.41
5.3.170.0000.03714.55
5.3.160.0070.03014.40
5.3.150.0000.04314.52
5.3.140.0030.04014.41
5.3.130.0030.03314.49
5.3.120.0030.04014.42
5.3.110.0070.07314.40
5.3.100.0030.04313.88
5.3.90.0030.03713.95
5.3.80.0070.07313.96
5.3.70.0000.07313.97
5.3.60.0030.06013.84
5.3.50.0030.03713.93
5.3.40.0030.07313.89
5.3.30.0030.06313.70
5.3.20.0000.06313.78
5.3.10.0030.05313.74
5.3.00.0000.04313.56
5.2.170.0030.03712.05
5.2.160.0030.06012.05
5.2.150.0000.06712.05
5.2.140.0000.06312.05
5.2.130.0000.05712.05
5.2.120.0000.06012.05
5.2.110.0030.03312.05
5.2.100.0000.03012.05
5.2.90.0030.06012.05
5.2.80.0070.06012.05
5.2.70.0000.06012.05
5.2.60.0000.03712.05
5.2.50.0030.04312.05
5.2.40.0000.04012.05
5.2.30.0000.03712.05
5.2.20.0070.02712.05
5.2.10.0030.04312.05
5.2.00.0000.04312.05
5.1.60.0100.04312.05
5.1.50.0000.03312.05
5.1.40.0070.04712.05
5.1.30.0030.05712.05
5.1.20.0070.05012.05
5.1.10.0000.03312.05
5.1.00.0030.04312.05
5.0.50.0170.02012.05
5.0.40.0030.02712.05
5.0.30.0030.04012.05
5.0.20.0000.04012.05
5.0.10.0000.04312.05
5.0.00.0030.03312.05
4.4.90.0030.03012.05
4.4.80.0030.03312.05
4.4.70.0000.03712.05
4.4.60.0000.03712.05
4.4.50.0000.02712.05
4.4.40.0030.02712.05
4.4.30.0130.01012.05
4.4.20.0000.02012.05
4.4.10.0000.02312.05
4.4.00.0000.05012.05
4.3.110.0000.03712.05
4.3.100.0070.03012.05
4.3.90.0000.02312.05
4.3.80.0000.05712.05
4.3.70.0070.02012.05
4.3.60.0000.02712.05
4.3.50.0000.02712.05
4.3.40.0070.03712.05
4.3.30.0030.02312.05
4.3.20.0000.02712.05
4.3.10.0000.03712.05
4.3.00.0000.03712.05

preferences:
46.16 ms | 401 KiB | 5 Q