3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo(&$x){ $x = null; } $a = 8; foo($a); var_dump($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)
8.3.40.0040.01418.87
8.3.30.0090.00620.21
8.3.20.0040.00420.25
8.3.10.0000.00722.01
8.3.00.0080.00022.40
8.2.170.0070.01322.96
8.2.160.0100.00322.30
8.2.150.0000.00724.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0080.00020.62
8.2.110.0030.00620.37
8.2.100.0080.00317.59
8.2.90.0000.00818.95
8.2.80.0080.00019.34
8.2.70.0040.00417.50
8.2.60.0080.00017.80
8.2.50.0040.00418.07
8.2.40.0070.00319.88
8.2.30.0070.00019.47
8.2.20.0000.00817.61
8.2.10.0000.00717.57
8.2.00.0090.00017.54
8.1.270.0050.00323.99
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0050.00523.83
8.1.230.0070.00423.87
8.1.220.0030.00617.74
8.1.210.0060.00318.77
8.1.200.0060.00317.23
8.1.190.0080.00017.41
8.1.180.0030.00519.01
8.1.170.0040.00418.64
8.1.160.0000.00718.71
8.1.150.0040.00418.55
8.1.140.0000.00917.38
8.1.130.0000.00717.81
8.1.120.0000.00717.30
8.1.110.0000.01017.36
8.1.100.0000.00717.42
8.1.90.0030.00317.42
8.1.80.0000.00717.35
8.1.70.0030.00317.29
8.1.60.0040.00417.60
8.1.50.0060.00317.47
8.1.40.0040.00417.51
8.1.30.0080.00017.63
8.1.20.0030.00517.53
8.1.10.0040.00417.41
8.1.00.0040.00417.43
8.0.300.0030.00518.77
8.0.290.0040.00416.93
8.0.280.0060.00318.34
8.0.270.0030.00317.18
8.0.260.0030.00316.74
8.0.250.0000.00916.91
8.0.240.0090.00016.86
8.0.230.0000.00716.87
8.0.220.0000.00716.72
8.0.210.0020.00516.73
8.0.200.0060.00016.89
8.0.190.0090.00016.78
8.0.180.0070.00016.75
8.0.170.0030.00316.86
8.0.160.0040.00416.71
8.0.150.0040.00416.65
8.0.140.0040.00416.73
8.0.130.0030.00613.18
8.0.120.0040.00416.73
8.0.110.0050.00316.84
8.0.100.0000.00716.88
8.0.90.0000.00716.81
8.0.80.0060.01016.83
8.0.70.0040.00416.78
8.0.60.0040.00416.84
8.0.50.0000.00716.65
8.0.30.0080.01217.21
8.0.20.0080.01017.40
8.0.10.0000.00816.90
8.0.00.0100.01116.79
7.4.330.0050.00014.98
7.4.320.0000.00616.49
7.4.300.0060.00016.59
7.4.290.0000.00716.54
7.4.280.0030.00316.53
7.4.270.0030.00716.38
7.4.260.0000.00513.26
7.4.250.0030.00516.50
7.4.240.0030.00316.59
7.4.230.0070.00016.61
7.4.220.0100.01716.45
7.4.210.0090.00816.54
7.4.200.0030.00316.66
7.4.190.0030.00316.71
7.4.160.0100.00616.44
7.4.150.0120.00917.40
7.4.140.0110.00617.86
7.4.130.0100.01016.36
7.4.120.0120.00616.63
7.4.110.0230.00016.44
7.4.100.0080.01616.48
7.4.90.0070.01016.38
7.4.80.0130.00819.39
7.4.70.0100.00616.55
7.4.60.0120.00416.45
7.4.50.0060.00316.30
7.4.40.0070.00722.77
7.4.30.0180.00316.52
7.4.00.0080.00414.84
7.3.330.0030.00313.25
7.3.320.0000.00713.00
7.3.310.0000.00716.27
7.3.300.0000.00716.25
7.3.290.0130.00716.17
7.3.280.0090.00816.24
7.3.270.0160.00017.40
7.3.260.0110.00716.61
7.3.250.0110.00716.32
7.3.240.0160.00716.31
7.3.230.0150.00316.55
7.3.210.0110.00616.26
7.3.200.0070.01419.39
7.3.190.0070.01016.61
7.3.180.0100.00616.30
7.3.170.0100.00616.27
7.3.160.0030.02116.43
7.3.120.0070.01014.68
7.2.330.0060.01216.17
7.2.320.0130.00416.50
7.2.310.0090.00916.60
7.2.300.0120.00416.54
7.2.290.0140.00316.51
7.2.60.0070.00716.64
7.2.00.0170.00019.01
7.1.200.0040.01115.88
7.1.100.0120.00417.98
7.1.70.0000.01017.02
7.1.60.0100.01019.21
7.1.50.0090.01216.77
7.1.00.0030.05722.48
7.0.200.0060.00316.48
7.0.140.0100.06721.95
7.0.70.3530.02719.82
7.0.60.4570.04719.86
7.0.50.4900.04320.35
7.0.40.4000.03720.11
7.0.30.4130.04020.12
7.0.20.4200.04320.09
7.0.10.3530.03719.98
7.0.00.3430.03319.99
5.6.280.0000.07720.77
5.6.210.3800.04320.59
5.6.200.4270.04020.95
5.6.190.4130.04720.96
5.6.180.4270.04020.96
5.6.170.4030.04720.98
5.6.160.3170.02721.13
5.6.150.2930.03720.95
5.6.140.1830.03721.02
5.6.130.2830.03721.04
5.6.120.1600.04021.08
5.6.110.3430.03021.10
5.6.100.3430.03721.07
5.6.90.4130.05020.99
5.6.80.3800.03320.40
5.6.70.3870.03720.55
5.6.60.3830.04320.48
5.6.50.3070.03020.33
5.6.40.3770.04320.49
5.6.30.4270.03320.31
5.6.20.4400.03720.53
5.6.10.0100.07720.49
5.6.00.0070.07320.44
5.5.350.3900.04320.41
5.5.340.4230.04020.80
5.5.330.4370.03320.84
5.5.320.4270.03720.90
5.5.310.3870.05020.63
5.5.300.3000.04320.64
5.5.290.3130.04020.79
5.5.280.1370.02720.80
5.5.270.3470.04020.87
5.5.260.4030.04320.82
5.5.250.3400.03720.68
5.5.240.4130.03020.21
5.5.230.3230.04320.29
5.5.220.3730.03320.26
5.5.210.3730.02720.29
5.5.200.3500.04320.24
5.5.190.3670.04320.19
5.5.180.4070.04320.24
5.5.160.0070.04020.25
5.5.150.4070.04020.15
5.5.140.4170.04320.20
5.5.130.3870.03720.25
5.5.120.4100.04320.20
5.5.110.4130.04320.11
5.5.100.3770.03720.13
5.5.90.3630.03720.01
5.5.80.4030.03720.06
5.5.70.2600.04020.11
5.5.60.0170.07319.96
5.5.50.3900.03720.08
5.5.40.4370.04019.95
5.5.30.4270.04020.15
5.5.20.4270.03720.16
5.5.10.4200.03720.07
5.5.00.4330.03020.18
5.4.450.2500.03019.54
5.4.440.3170.04319.50
5.4.430.3300.03319.38
5.4.420.3500.03719.48
5.4.410.3700.04019.42
5.4.400.3830.04018.85
5.4.390.4270.03019.03
5.4.380.3830.04019.21
5.4.370.3130.04019.16
5.4.360.3230.03718.85
5.4.350.3630.03719.05
5.4.340.3900.03019.18
5.4.320.2100.03319.22
5.4.310.3800.04019.11
5.4.300.4200.03018.90
5.4.290.4230.03319.12
5.4.280.4370.03019.18
5.4.270.4370.03318.87
5.4.260.4300.04319.09
5.4.250.4330.03718.81
5.4.240.4330.04018.87
5.4.230.4270.02719.09
5.4.220.0030.08319.02
5.4.210.3630.04719.17
5.4.200.4370.03318.84
5.4.190.3700.03719.22
5.4.180.3700.04019.03
5.4.170.4200.04019.17
5.4.160.3600.03719.02
5.4.150.3700.04019.21
5.4.140.4370.03716.14
5.4.130.4300.03316.36
5.4.120.4430.02716.28
5.4.110.4200.03716.46
5.4.100.4230.03716.43
5.4.90.3900.03716.34
5.4.80.4130.04316.45
5.4.70.3430.02316.41
5.4.60.3870.03016.34
5.4.50.4270.02716.30
5.4.40.4330.03316.36
5.4.30.4170.03716.33
5.4.20.4230.03316.33
5.4.10.4200.04016.36
5.4.00.3900.03715.91
5.3.290.3530.04014.63
5.3.280.0130.06714.55
5.3.270.3570.04014.56
5.3.260.4200.03714.71
5.3.250.4430.03014.62
5.3.240.3430.04014.52
5.3.230.4030.04014.71
5.3.220.3870.03314.59
5.3.210.4230.03714.50
5.3.200.4270.03014.70
5.3.190.4070.03314.59
5.3.180.4200.03314.50
5.3.170.4030.03714.62
5.3.160.3530.03714.62
5.3.150.4070.03314.64
5.3.140.4170.04014.54
5.3.130.4170.03314.61
5.3.120.4170.03714.63
5.3.110.4130.04014.59
5.3.100.4300.04014.07
5.3.90.3900.03714.07
5.3.80.4200.04013.99
5.3.70.4100.03313.94
5.3.60.4070.04714.05
5.3.50.3700.03314.08
5.3.40.3900.04013.87
5.3.30.3470.04013.83
5.3.20.2700.02713.69
5.3.10.2730.03313.77
5.3.00.2600.03313.62
5.2.170.3600.03011.22
5.2.160.3670.02311.07
5.2.150.3470.02711.23
5.2.140.2530.02711.06
5.2.130.2400.03010.98
5.2.120.2230.02711.10
5.2.110.2170.02311.08
5.2.100.2570.02011.16
5.2.90.2530.02311.19
5.2.80.2600.02311.18
5.2.70.2700.03711.02
5.2.60.2500.02711.15
5.2.50.3070.03011.04
5.2.40.1670.02310.90
5.2.30.1870.02311.03
5.2.20.2070.02010.95
5.2.10.1830.02710.78
5.2.00.2100.03310.74
5.1.60.1330.0209.82
5.1.50.2730.0279.98
5.1.40.2970.0279.82
5.1.30.2970.03010.33
5.1.20.2930.03010.38
5.1.10.2900.0279.95
5.1.00.2970.0209.91
5.0.50.1670.0178.53
5.0.40.1300.0208.46
5.0.30.1730.0308.22
5.0.20.1600.0238.03
5.0.10.1630.0238.26
5.0.00.1630.0278.22
4.4.90.1070.0135.85
4.4.80.1130.0175.85
4.4.70.0670.0105.85
4.4.60.1170.0105.87
4.4.50.1000.0135.85
4.4.40.1100.0205.87
4.4.30.1500.0205.85
4.4.20.1700.0175.95
4.4.10.1700.0175.96
4.4.00.1800.0235.85
4.3.110.1770.0175.85
4.3.100.1670.0135.85
4.3.90.1730.0175.85
4.3.80.1670.0205.85
4.3.70.1800.0175.85
4.3.60.1400.0135.85
4.3.50.1730.0135.85
4.3.40.1600.0275.85
4.3.30.0930.0235.85
4.3.20.0900.0205.85
4.3.10.0930.0205.85
4.3.00.0870.0175.85

preferences:
48.62 ms | 400 KiB | 5 Q