3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "hello"; $b = "hi"; $val = "howdy"; $val = "a"; echo $$val; // outputs "hello" $val = "b"; echo $$val; // outputs "hi" echo $val; // outputs "howdy" echo ${"val"}; // also outputs "howdy"

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)
8.3.60.0080.00818.18
8.3.50.0090.00721.92
8.3.40.0040.01118.87
8.3.30.0140.00018.76
8.3.20.0040.00418.50
8.3.10.0040.00420.91
8.3.00.0070.00023.64
8.2.180.0180.00318.43
8.2.170.0070.00722.96
8.2.160.0070.00720.22
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0050.00226.16
8.2.120.0040.00419.42
8.2.110.0070.00320.93
8.2.100.0040.00817.78
8.2.90.0000.00819.13
8.2.80.0050.00317.97
8.2.70.0040.00417.50
8.2.60.0030.00517.93
8.2.50.0040.00418.07
8.2.40.0030.00518.16
8.2.30.0000.00719.49
8.2.20.0040.00417.76
8.2.10.0070.00017.60
8.2.00.0040.00717.61
8.1.280.0100.00725.92
8.1.270.0040.00423.99
8.1.260.0030.00626.35
8.1.250.0050.00528.09
8.1.240.0090.00021.30
8.1.230.0090.00317.42
8.1.220.0050.00317.74
8.1.210.0030.00518.77
8.1.200.0000.01017.47
8.1.190.0040.00417.22
8.1.180.0000.00918.10
8.1.170.0000.00918.66
8.1.160.0000.00718.89
8.1.150.0050.00218.67
8.1.140.0000.00717.48
8.1.130.0030.00317.77
8.1.120.0000.00817.43
8.1.110.0000.00717.48
8.1.100.0070.00017.43
8.1.90.0000.00817.46
8.1.80.0000.00717.50
8.1.70.0040.00417.48
8.1.60.0040.00417.43
8.1.50.0040.00417.30
8.1.40.0050.00317.38
8.1.30.0080.00017.61
8.1.20.0000.00817.72
8.1.10.0000.00717.38
8.1.00.0040.00417.34
8.0.300.0040.00418.77
8.0.290.0000.00716.75
8.0.280.0030.00318.51
8.0.270.0070.00017.23
8.0.260.0040.00416.80
8.0.250.0040.00416.96
8.0.240.0000.00816.94
8.0.230.0070.00016.95
8.0.220.0070.00016.93
8.0.210.0040.00416.93
8.0.200.0070.00016.90
8.0.190.0000.00716.82
8.0.180.0030.00316.85
8.0.170.0000.00716.87
8.0.160.0000.00716.86
8.0.150.0000.00716.90
8.0.140.0030.00516.86
8.0.130.0030.00313.30
8.0.120.0030.00516.80
8.0.110.0080.00016.77
8.0.100.0020.00516.75
8.0.90.0000.00716.75
8.0.80.0090.01316.88
8.0.70.0050.00316.82
8.0.60.0080.00016.71
8.0.50.0030.00316.99
8.0.30.0070.01217.07
8.0.20.0090.00917.40
8.0.10.0070.00017.07
8.0.00.0160.00616.85
7.4.330.0000.00514.66
7.4.320.0040.00416.48
7.4.300.0000.00616.41
7.4.290.0040.00416.54
7.4.280.0000.00716.34
7.4.270.0030.00316.41
7.4.260.0050.00013.25
7.4.250.0060.00316.56
7.4.240.0040.00416.50
7.4.230.0040.00416.70
7.4.220.0130.00716.68
7.4.210.0090.00716.50
7.4.200.0030.00316.59
7.4.190.0040.00416.59
7.4.160.0160.00316.70
7.4.150.0180.00017.40
7.4.140.0090.00917.86
7.4.130.0110.00516.39
7.4.120.0130.00516.54
7.4.110.0030.01316.39
7.4.100.0070.01516.52
7.4.90.0070.01116.59
7.4.80.0120.00919.39
7.4.70.0060.01216.31
7.4.60.0100.01016.59
7.4.50.0060.00316.62
7.4.40.0070.01022.52
7.4.30.0070.01016.41
7.4.00.0070.01015.05
7.3.330.0000.00513.06
7.3.320.0020.00213.16
7.3.310.0050.00216.35
7.3.300.0070.00016.10
7.3.290.0130.00316.29
7.3.280.0060.00916.27
7.3.270.0070.01017.40
7.3.260.0120.00518.24
7.3.250.0110.00616.21
7.3.240.0110.00516.29
7.3.230.0100.00616.39
7.3.210.0090.00716.49
7.3.200.0030.01319.39
7.3.190.0080.01216.47
7.3.180.0080.00816.41
7.3.170.0170.00416.54
7.3.160.0100.00616.36
7.3.120.0000.01514.83
7.3.10.0210.00016.30
7.3.00.0170.01016.09
7.2.330.0070.01116.59
7.2.320.0150.00316.59
7.2.310.0120.00616.61
7.2.300.0040.01216.66
7.2.290.0090.00916.27
7.2.130.0120.00416.60
7.2.120.0150.00016.50
7.2.110.0080.00316.21
7.2.100.0100.01316.30
7.2.90.0100.00716.53
7.2.80.0100.00716.65
7.2.70.0390.00316.82
7.2.60.0110.00616.65
7.2.50.0120.00316.18
7.2.40.0120.00316.69
7.2.30.0030.00716.91
7.2.20.0150.00616.10
7.2.10.0040.00716.28
7.2.00.0090.00418.04
7.1.250.0140.00415.31
7.1.200.0140.00515.46
7.1.100.0700.01515.98
7.1.70.0000.00717.02
7.1.60.0100.01419.40
7.1.50.0110.01116.68
7.1.00.0070.07022.28
7.0.200.0000.00916.70
7.0.140.0070.06322.00
7.0.70.0070.04319.93
7.0.60.0100.05019.98
7.0.50.0200.07020.39
7.0.40.0100.07720.05
7.0.30.0130.08320.09
7.0.20.0100.07320.04
7.0.10.0070.05720.09
7.0.00.0030.08720.07
5.6.280.0030.07321.06
5.6.220.0070.03720.57
5.6.210.0070.05020.74
5.6.200.0100.08721.04
5.6.190.0170.07021.02
5.6.180.0030.06021.03
5.6.170.0070.07321.04
5.6.160.0100.06721.08
5.6.150.0070.08321.16
5.6.140.0100.08321.13
5.6.130.0070.08720.94
5.6.120.0130.06021.07
5.6.110.0130.07021.04
5.6.100.0100.08021.02
5.6.90.0200.06720.93
5.6.80.0070.05020.45
5.6.70.0170.05320.38
5.6.60.0070.08320.38
5.6.50.0030.05320.39
5.6.40.0170.07720.38
5.6.30.0130.07320.41
5.6.20.0200.07020.43
5.6.10.0000.09320.38
5.6.00.0100.05320.30
5.5.360.0100.03320.32
5.5.350.0030.07020.33
5.5.340.0030.08720.81
5.5.330.0130.07020.85
5.5.320.0000.07020.60
5.5.310.0130.07020.87
5.5.300.0230.06720.86
5.5.290.0100.07720.82
5.5.280.0030.07320.89
5.5.270.0130.08020.88
5.5.260.0070.05720.78
5.5.250.0100.07320.54
5.5.240.0130.07020.30
5.5.230.0100.05320.20
5.5.220.0100.06020.28
5.5.210.0100.07720.16
5.5.200.0000.08720.07
5.5.190.0070.05720.07
5.5.180.0070.08020.26
5.5.160.0070.07720.21
5.5.150.0030.06019.98
5.5.140.0070.07720.10
5.5.130.0070.08320.22
5.5.120.0030.06019.97
5.5.110.0070.05720.08
5.5.100.0070.07320.06
5.5.90.0100.07020.06
5.5.80.0070.08020.00
5.5.70.0000.08720.09
5.5.60.0130.07719.95
5.5.50.0070.08020.07
5.5.40.0130.07319.93
5.5.30.0100.07720.06
5.5.20.0030.08720.13
5.5.10.0170.06320.11
5.5.00.0130.06019.95
5.4.450.0030.08319.45
5.4.440.0000.08319.55
5.4.430.0000.09019.26
5.4.420.0070.06719.29
5.4.410.0130.07319.18
5.4.400.0070.07018.90
5.4.390.0100.08319.04
5.4.380.0030.07719.01
5.4.370.0000.08018.90
5.4.360.0000.08318.79
5.4.350.0130.07019.10
5.4.340.0070.04319.23
5.4.320.0100.04019.13
5.4.310.0000.08318.90
5.4.300.0030.08319.05
5.4.290.0130.07718.96
5.4.280.0100.05318.78
5.4.270.0070.06318.83
5.4.260.0130.06718.98
5.4.250.0070.06319.09
5.4.240.0170.04718.97
5.4.230.0070.08019.01
5.4.220.0130.05318.93
5.4.210.0130.07018.78
5.4.200.0100.07719.04
5.4.190.0070.08318.97
5.4.180.0100.07319.04
5.4.170.0030.07719.11
5.4.160.0070.07719.07
5.4.150.0000.08719.12
5.4.140.0030.05716.39
5.4.130.0100.07316.34
5.4.120.0100.06716.32
5.4.110.0070.07316.42
5.4.100.0070.07316.24
5.4.90.0130.06716.30
5.4.80.0000.07716.39
5.4.70.0100.06716.40
5.4.60.0000.07716.20
5.4.50.0030.07316.41
5.4.40.0070.03716.39
5.4.30.0070.07716.22
5.4.20.0070.06716.37
5.4.10.0100.05716.35
5.4.00.0000.05015.49
5.3.290.0030.08314.65
5.3.280.0070.07314.57
5.3.270.0070.07714.59
5.3.260.0100.07714.56
5.3.250.0130.05314.42
5.3.240.0100.07314.56
5.3.230.0100.04714.42
5.3.220.0030.07714.56
5.3.210.0130.07314.55
5.3.200.0070.06314.40
5.3.190.0100.07714.38
5.3.180.0070.08014.56
5.3.170.0030.05314.42
5.3.160.0000.05014.39
5.3.150.0130.07314.41
5.3.140.0030.04314.54
5.3.130.0070.08014.48
5.3.120.0070.08014.39
5.3.110.0130.07314.51
5.3.100.0070.07714.03
5.3.90.0100.07014.02
5.3.80.0070.07714.00
5.3.70.0030.07714.00
5.3.60.0130.06713.94
5.3.50.0200.06313.89
5.3.40.0100.07013.93
5.3.30.0030.08013.66
5.3.20.0200.04313.68
5.3.10.0030.07713.43
5.3.00.0030.07713.63
5.2.170.0100.06312.12
5.2.160.0030.06012.12
5.2.150.0070.06712.12
5.2.140.0000.05712.12
5.2.130.0070.05012.12
5.2.120.0100.04312.12
5.2.110.0100.03312.12
5.2.100.0000.04712.12
5.2.90.0130.04712.12
5.2.80.0070.06712.12
5.2.70.0030.06312.12
5.2.60.0030.05312.12
5.2.50.0030.06712.12
5.2.40.0030.06312.12
5.2.30.0130.05312.12
5.2.20.0130.04012.12
5.2.10.0100.05712.12
5.2.00.0000.03712.12
5.1.60.0030.05012.12
5.1.50.0070.04012.12
5.1.40.0000.05312.12
5.1.30.0030.04312.12
5.1.20.0000.03012.12
5.1.10.0070.05312.12
5.1.00.0070.05712.12
5.0.50.0070.04312.12
5.0.40.0030.04312.12
5.0.30.0030.06712.12
5.0.20.0070.03712.12
5.0.10.0000.04712.12
5.0.00.0000.06312.12
4.4.90.0000.03712.12
4.4.80.0030.02312.12
4.4.70.0030.02312.12
4.4.60.0000.01712.12
4.4.50.0000.03312.12
4.4.40.0000.05312.12
4.4.30.0000.02312.12
4.4.20.0000.01712.12
4.4.10.0000.03312.12
4.4.00.0070.05012.12
4.3.110.0000.03712.12
4.3.100.0070.03012.12
4.3.90.0000.03712.12
4.3.80.0000.05012.12
4.3.70.0070.03012.12
4.3.60.0030.03312.12
4.3.50.0070.02312.12
4.3.40.0000.05312.12
4.3.30.0070.02312.12
4.3.20.0000.04012.12
4.3.10.0000.03012.12
4.3.00.0070.03312.12

preferences:
31.79 ms | 401 KiB | 5 Q