3v4l.org

run code in 300+ PHP versions simultaneously
<?php class foo { function __construct() { $this->a = "oi"; $this->b = "hi"; $this->val = "howdy"; $val = "a"; echo $this->{$val}; // outputs "hello" echo "\n"; $val = "b"; echo $this->{$val}; // outputs "hi" echo "\n"; echo $this->val; //outputs "howdy" echo "\n"; echo $this->{"val"}; } } $foo = new foo();

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)
8.3.40.0100.00318.79
8.3.30.0070.01019.01
8.3.20.0120.00620.39
8.3.10.0040.00421.82
8.3.00.0110.00422.52
8.2.170.0100.01022.96
8.2.160.0030.01020.58
8.2.150.0080.00024.18
8.2.140.0110.00324.66
8.2.130.0000.00826.16
8.2.120.0040.00419.36
8.2.110.0060.00320.47
8.2.100.0060.00617.72
8.2.90.0000.00817.88
8.2.80.0040.00417.97
8.2.70.0030.00617.80
8.2.60.0030.00517.80
8.2.50.0040.00418.10
8.2.40.0040.00420.59
8.2.30.0000.00717.95
8.2.20.0000.00717.53
8.2.10.0050.00319.40
8.2.00.0030.00517.64
8.1.270.0000.00823.99
8.1.260.0090.00026.35
8.1.250.0000.00728.09
8.1.240.0040.00422.23
8.1.230.0040.01219.09
8.1.220.0050.00317.74
8.1.210.0080.00018.77
8.1.200.0130.00017.35
8.1.190.0000.00817.35
8.1.180.0060.00318.10
8.1.170.0050.00318.50
8.1.160.0000.00721.95
8.1.150.0000.00718.58
8.1.140.0050.00217.32
8.1.130.0030.00317.79
8.1.120.0000.00717.45
8.1.110.0000.00717.47
8.1.100.0040.00417.47
8.1.90.0000.00717.26
8.1.80.0000.00817.41
8.1.70.0070.00017.46
8.1.60.0000.00817.60
8.1.50.0050.00217.53
8.1.40.0060.00317.48
8.1.30.0040.00417.55
8.1.20.0000.00917.63
8.1.10.0000.00717.50
8.1.00.0040.00417.35
8.0.300.0000.00919.66
8.0.290.0030.00616.63
8.0.280.0000.00718.36
8.0.270.0000.00717.27
8.0.260.0040.00418.42
8.0.250.0000.00716.97
8.0.240.0070.00016.94
8.0.230.0030.00316.82
8.0.220.0030.00316.90
8.0.210.0030.00316.90
8.0.200.0060.00016.83
8.0.190.0030.00316.86
8.0.180.0030.00516.82
8.0.170.0070.00016.79
8.0.160.0070.00016.87
8.0.150.0070.00016.90
8.0.140.0000.00816.73
8.0.130.0030.00313.36
8.0.120.0030.00516.84
8.0.110.0040.00416.95
8.0.100.0070.00016.88
8.0.90.0000.00916.95
8.0.80.0030.01216.87
8.0.70.0000.00816.98
8.0.60.0070.00016.82
8.0.50.0000.00817.00
8.0.30.0130.00917.22
8.0.20.0120.00617.40
8.0.10.0050.00316.83
8.0.00.0130.00616.94
7.4.330.0000.00515.07
7.4.320.0040.00416.43
7.4.300.0040.00416.41
7.4.290.0070.00016.52
7.4.280.0050.00316.41
7.4.270.0070.00016.51
7.4.260.0000.00716.59
7.4.250.0000.00716.46
7.4.240.0040.00416.56
7.4.230.0050.00216.68
7.4.220.0120.00616.55
7.4.210.0080.00716.60
7.4.200.0000.00716.39
7.4.190.0030.00316.67
7.4.160.0060.01016.45
7.4.150.0110.00917.40
7.4.140.0100.00717.86
7.4.130.0080.01016.46
7.4.120.0120.00616.55
7.4.110.0100.00716.27
7.4.100.0150.00316.52
7.4.90.0150.00316.36
7.4.80.0120.01019.39
7.4.70.0070.01016.46
7.4.60.0120.00616.45
7.4.50.0040.00416.34
7.4.40.0080.00622.77
7.4.30.0080.00816.53
7.4.00.0030.01414.93
7.3.330.0000.00513.15
7.3.320.0020.00213.21
7.3.310.0000.00816.34
7.3.300.0040.00416.22
7.3.290.0060.01316.43
7.3.280.0070.01016.33
7.3.270.0130.00617.40
7.3.260.0120.01216.36
7.3.250.0070.00916.58
7.3.240.0100.00716.57
7.3.230.0070.01516.39
7.3.210.0070.01016.64
7.3.200.0150.00719.39
7.3.190.0220.00016.25
7.3.180.0030.01316.73
7.3.170.0070.01016.67
7.3.160.0160.00616.48
7.3.120.0000.01514.87
7.3.10.0080.00816.61
7.3.00.0040.01216.45
7.2.330.0120.00616.43
7.2.320.0090.01516.71
7.2.310.0160.00316.82
7.2.300.0130.01016.73
7.2.290.0090.00816.79
7.2.130.0040.00817.04
7.2.120.0060.00616.41
7.2.110.0030.00916.84
7.2.100.0070.00716.66
7.2.90.0060.00916.98
7.2.80.0080.00416.77
7.2.70.0040.00417.17
7.2.60.0020.01317.02
7.2.50.0040.00816.68
7.2.40.0040.00816.93
7.2.30.0040.00716.91
7.2.20.0040.00816.77
7.2.10.0000.01116.87
7.2.00.0090.00916.92
7.1.250.0040.01215.92
7.1.200.0070.00415.49
7.1.70.0040.01116.93
7.1.60.0070.01419.82
7.1.50.0030.02016.70
7.1.00.0030.07722.33
7.0.200.0090.00316.49
7.0.140.0070.07022.08
7.0.60.0070.06720.06
7.0.50.0130.04317.86
7.0.40.0070.04320.24
7.0.30.0330.04720.09
7.0.20.0230.06320.09
7.0.10.0400.07720.25
7.0.00.0070.06720.06
5.6.280.0000.07720.79
5.6.210.0000.04320.66
5.6.200.0170.07018.29
5.6.190.0130.08720.55
5.6.180.4370.04020.67
5.6.170.0200.05020.47
5.6.160.0030.04320.70
5.6.150.0070.05718.14
5.6.140.0070.04318.16
5.6.130.0070.03718.18
5.6.120.0130.07721.14
5.6.110.0230.07020.98
5.6.100.0170.07720.98
5.6.90.0170.07020.98
5.6.80.0030.04320.41
5.6.70.0230.05320.28
5.5.350.0000.08320.44
5.5.340.0000.05018.03
5.5.330.0130.05320.31
5.5.320.0330.06720.35
5.5.310.0370.07020.30
5.5.300.0070.07317.95
5.5.290.0100.07317.94
5.5.280.0070.08320.80
5.5.270.0030.05020.97
5.5.260.0100.05720.77
5.5.250.0170.05320.61
5.5.240.0030.04320.29
5.4.450.4130.04719.55
5.4.440.4200.04019.36
5.4.430.3930.03719.49
5.4.420.4230.04319.29
5.4.410.3230.03719.17
5.4.400.3500.03719.23
5.4.390.2630.04719.15
5.4.380.3430.03719.23
5.4.370.3530.03318.99
5.4.360.3230.03719.20
5.4.350.3230.03719.15
5.4.340.3870.04019.06
5.4.320.4700.03319.27
5.4.310.4630.04318.97
5.4.300.1700.04319.12
5.4.290.0070.03719.24
5.4.280.0130.06718.99
5.4.270.4600.03318.99
5.4.260.4600.03319.11
5.4.250.4530.04318.93
5.4.240.3870.04318.95
5.4.230.4330.03719.19
5.4.220.4000.04018.94
5.4.210.3830.03719.04
5.4.200.4170.03319.21
5.4.190.0030.05318.93
5.4.180.2530.04319.05
5.4.170.5370.04319.03
5.4.160.4400.03719.20
5.4.150.4100.03319.20
5.4.140.4630.03316.35
5.4.130.4000.02716.49
5.4.120.4300.03016.40
5.4.110.3830.03316.55
5.4.100.3770.02716.49
5.4.90.3630.04016.22
5.4.80.3970.03716.20
5.4.70.4130.03316.45
5.4.60.4130.04316.20
5.4.50.3800.03716.47
5.4.40.3930.03316.45
5.4.30.4230.03016.52
5.4.20.4400.03716.48
5.4.10.4570.03316.29
5.4.00.4470.03315.89
5.3.290.4430.04314.66
5.3.280.4200.03314.62
5.3.270.4600.04014.61
5.3.260.4370.03714.61
5.3.250.3830.04014.49
5.3.240.4970.03714.52
5.3.230.4530.03314.64
5.3.220.4700.03314.61
5.3.210.3670.03714.73
5.3.200.3630.03314.60
5.3.190.3870.04014.74
5.3.180.4000.03314.61
5.3.170.3830.04014.71
5.3.160.3870.04714.57
5.3.150.3830.04014.57
5.3.140.3800.04014.61
5.3.130.3930.04014.57
5.3.120.3870.03014.55
5.3.110.4430.03314.57
5.3.100.4570.03314.05
5.3.90.4500.04314.07
5.3.80.4430.03714.05
5.3.70.4770.02713.96
5.3.60.4500.03314.04
5.3.50.4500.03713.87
5.3.40.4600.04013.99
5.3.30.4670.03313.90
5.3.20.4500.03013.66
5.3.10.4230.03313.62
5.3.00.4070.03713.70
5.2.170.4000.03011.18
5.2.160.3830.03011.10
5.2.150.4070.02011.14
5.2.140.3830.03311.30
5.2.130.4070.02711.18
5.2.120.3430.02011.10
5.2.110.3370.03011.14
5.2.100.3330.03311.17
5.2.90.3570.02711.11
5.2.80.3470.02711.18
5.2.70.3000.03011.10
5.2.60.3630.02711.12
5.2.50.3830.03011.16
5.2.40.3230.02710.99
5.2.30.3100.03010.86
5.2.20.3170.03010.95
5.2.10.3800.02710.87
5.2.00.3170.02710.72
5.1.60.2900.02310.00
5.1.50.2700.02710.01
5.1.40.2430.0309.95
5.1.30.2530.02010.41
5.1.20.2430.03010.37
5.1.10.2430.0239.97
5.1.00.2770.03010.07
5.0.50.1200.0178.59
5.0.40.1230.0208.32
5.0.30.0930.0338.21
5.0.20.1270.0178.24
5.0.10.1200.0208.16
5.0.00.1800.0238.16
4.4.90.1700.0176.02
4.4.80.1470.0176.02
4.4.70.1870.0176.02
4.4.60.1870.0206.02
4.4.50.1700.0136.02
4.4.40.1630.0236.02
4.4.30.1030.0136.02
4.4.20.1170.0176.02
4.4.10.1170.0176.02
4.4.00.1170.0276.02
4.3.110.1030.0176.02
4.3.100.1370.0176.02
4.3.90.1170.0176.02
4.3.80.1200.0236.02
4.3.70.1230.0106.02
4.3.60.1200.0176.02
4.3.50.1230.0176.02
4.3.40.1170.0276.02
4.3.30.0600.0176.02
4.3.20.0700.0106.02
4.3.10.0330.0106.02
4.3.00.0600.0136.02

preferences:
46.92 ms | 400 KiB | 5 Q