3v4l.org

run code in 300+ PHP versions simultaneously
<?php session_start(); class test { function test() { $bar = &$_SESSION['foo']; } } var_dump($_SESSION['foo']); $test=new test(); $foo = 1; ?>

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)
8.3.60.0070.01418.47
8.3.50.0130.00721.09
8.3.40.0140.00718.89
8.3.30.0070.00720.29
8.3.20.0080.00020.46
8.3.10.0080.00021.09
8.3.00.0040.00422.30
8.2.180.0160.00618.41
8.2.170.0060.01222.96
8.2.160.0140.00020.56
8.2.150.0030.00524.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0030.00521.16
8.2.110.0030.00619.29
8.2.100.0040.00818.03
8.2.90.0060.00319.43
8.2.80.0000.00918.03
8.2.70.0060.00317.63
8.2.60.0050.00317.80
8.2.50.0000.00918.07
8.2.40.0000.00918.34
8.2.30.0000.00719.36
8.2.20.0040.00417.85
8.2.10.0080.00017.75
8.2.00.0080.00017.75
8.1.280.0070.00725.92
8.1.270.0070.00723.99
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0070.00420.81
8.1.230.0040.00721.04
8.1.220.0030.00618.77
8.1.210.0000.00818.97
8.1.200.0000.00817.22
8.1.190.0000.00817.40
8.1.180.0000.00818.10
8.1.170.0030.00618.71
8.1.160.0000.00718.95
8.1.150.0040.00418.57
8.1.140.0040.00417.43
8.1.130.0000.00717.77
8.1.120.0030.00317.46
8.1.110.0070.00017.54
8.1.100.0040.00417.37
8.1.90.0000.00817.48
8.1.80.0000.00717.53
8.1.70.0050.00217.43
8.1.60.0000.00817.56
8.1.50.0000.00817.56
8.1.40.0040.00417.55
8.1.30.0040.00417.46
8.1.20.0030.00517.59
8.1.10.0050.00217.38
8.1.00.0000.00817.38
8.0.300.0050.00220.02
8.0.290.0040.00417.05
8.0.280.0000.00718.50
8.0.270.0000.00717.39
8.0.260.0040.00416.87
8.0.250.0030.00617.01
8.0.240.0040.00716.98
8.0.230.0040.00416.93
8.0.220.0000.00817.00
8.0.210.0030.00316.98
8.0.200.0060.00017.01
8.0.190.0030.00316.98
8.0.180.0000.00717.02
8.0.170.0060.00316.97
8.0.160.0040.00316.85
8.0.150.0000.01016.89
8.0.140.0040.00416.86
8.0.130.0000.00613.36
8.0.120.0000.00716.94
8.0.110.0050.00216.94
8.0.100.0040.00416.75
8.0.90.0000.00716.95
8.0.80.0050.01217.02
8.0.70.0000.00717.00
8.0.60.0000.00816.95
8.0.50.0000.00816.75
8.0.30.0110.01217.09
8.0.20.0080.01217.40
8.0.10.0000.00817.03
8.0.00.0120.00816.68
7.4.330.0050.00016.89
7.4.320.0030.00316.59
7.4.300.0000.00616.44
7.4.290.0030.00316.42
7.4.280.0040.00416.58
7.4.270.0080.00016.49
7.4.260.0030.00313.22
7.4.250.0050.00316.46
7.4.240.0050.00316.60
7.4.230.0040.00416.62
7.4.220.0090.00916.44
7.4.210.0070.00716.63
7.4.200.0040.00216.35
7.4.190.0000.00716.45
7.4.160.0110.00416.37
7.4.150.0140.00417.40
7.4.140.0080.01017.86
7.4.130.0070.00916.40
7.4.120.0110.01016.52
7.4.110.0110.00616.54
7.4.100.0090.00916.46
7.4.90.0100.01016.39
7.4.80.0160.00619.39
7.4.70.0030.01316.27
7.4.60.0170.00016.32
7.4.50.0060.00316.60
7.4.40.0060.00922.77
7.4.30.0060.00916.52
7.4.00.0070.00714.62
7.3.330.0000.00513.31
7.3.320.0030.00313.17
7.3.310.0040.00416.39
7.3.300.0040.00416.28
7.3.290.0130.00616.35
7.3.280.0080.00716.37
7.3.270.0120.00617.40
7.3.260.0120.00618.24
7.3.250.0100.01216.40
7.3.240.0070.01016.41
7.3.230.0070.01316.39
7.3.210.0070.01016.57
7.3.200.0090.01019.39
7.3.190.0060.01116.34
7.3.180.0110.00716.48
7.3.170.0080.00816.41
7.3.160.0060.01016.55
7.3.120.0000.01714.81
7.2.330.0140.00416.35
7.2.320.0090.01216.79
7.2.310.0180.00416.73
7.2.300.0100.00716.71
7.2.290.0110.00416.45
7.2.80.0090.00616.75
7.2.60.0030.01016.88
7.2.00.0090.00619.21
7.1.200.0000.01215.61
7.1.100.0080.00318.14
7.1.70.0040.00416.99
7.1.60.0070.01719.17
7.1.50.0070.00716.79
7.1.00.0000.04722.54
7.0.200.0000.00716.73
7.0.140.0070.07022.21
7.0.70.0070.07721.73
7.0.60.0100.06721.75
7.0.50.0070.06022.00
7.0.40.0100.07720.10
7.0.30.0000.07320.17
7.0.20.0000.06320.04
7.0.10.0030.04020.18
7.0.00.0070.04320.17
5.6.280.0000.07720.80
5.6.220.0100.07020.65
5.6.210.0070.07720.65
5.6.200.0130.08021.02
5.6.190.0030.08321.17
5.6.180.0070.06721.05
5.6.170.0000.05721.02
5.6.160.0030.04021.07
5.6.150.0100.07721.06
5.6.140.0070.08021.11
5.6.130.0100.07721.12
5.6.120.0100.04721.00
5.6.110.0100.06321.11
5.6.100.0000.08720.94
5.6.90.0000.07721.05
5.6.80.0070.03720.42
5.6.70.0030.08020.46
5.6.60.0070.04020.37
5.6.50.0000.05720.42
5.6.40.0070.03320.36
5.6.30.0030.05720.38
5.6.20.0100.05320.52
5.6.10.0030.05020.52
5.6.00.0000.05320.38
5.5.360.0030.06720.55
5.5.350.0100.07720.42
5.5.340.0130.08020.84
5.5.330.0100.04020.76
5.5.320.0030.09020.80
5.5.310.0130.07320.77
5.5.300.0100.06720.72
5.5.290.0030.08020.87
5.5.280.0000.06720.75
5.5.270.0030.08720.79
5.5.260.0130.07320.86
5.5.250.0030.08020.61
5.5.240.0170.06020.28
5.5.230.0070.08320.19
5.5.220.0030.04320.22
5.5.210.0030.08320.17
5.5.200.0030.04320.20
5.5.190.0100.07320.16
5.5.180.0070.05020.25
5.5.160.0100.06020.00
5.5.150.0000.06320.18
5.5.140.0000.04020.27
5.5.130.0000.04020.28
5.5.120.0030.03720.14
5.5.110.0070.03720.14
5.5.100.0070.03320.15
5.5.90.0070.04320.04
5.5.80.0000.04020.07
5.5.70.0000.06720.16
5.5.60.0070.03020.14
5.5.50.0100.03019.94
5.5.40.0030.05020.07
5.5.30.0030.05720.11
5.5.20.0030.03720.06
5.5.10.0070.03720.13
5.5.00.0030.03720.01
5.4.450.0030.08719.52
5.4.440.0070.07719.37
5.4.430.0070.07319.37
5.4.420.0030.08319.48
5.4.410.0000.08319.31
5.4.400.0000.05319.04
5.4.390.0030.05019.20
5.4.380.0070.04719.16
5.4.370.0000.04019.16
5.4.360.0030.08019.05
5.4.350.0000.04018.90
5.4.340.0130.05019.20
5.4.320.0000.04319.05
5.4.310.0030.03719.05
5.4.300.0030.03719.20
5.4.290.0000.04018.90
5.4.280.0030.03719.15
5.4.270.0000.03719.04
5.4.260.0030.03318.85
5.4.250.0000.04019.22
5.4.240.0030.03019.22
5.4.230.0030.05018.86
5.4.220.0030.04719.13
5.4.210.0030.05319.20
5.4.200.0000.03718.84
5.4.190.0000.03718.84
5.4.180.0030.06719.03
5.4.170.0000.03718.84
5.4.160.0030.03319.02
5.4.150.0030.03719.22
5.4.140.0030.04716.43
5.4.130.0030.03316.40
5.4.120.0030.04316.45
5.4.110.0000.03716.32
5.4.100.0030.05316.32
5.4.90.0070.05016.33
5.4.80.0030.07016.50
5.4.70.0030.03316.55
5.4.60.0030.05316.40
5.4.50.0000.05016.47
5.4.40.0070.06316.38
5.4.30.0000.05716.40
5.4.20.0030.02716.29
5.4.10.0000.03016.33
5.4.00.0000.03315.89
5.3.290.0030.03714.77
5.3.280.0070.07314.51
5.3.270.0070.04714.62
5.3.260.0000.04314.57
5.3.250.0030.06714.62
5.3.240.0030.04314.69
5.3.230.0000.04014.71
5.3.220.0030.03714.51
5.3.210.0000.03714.67
5.3.200.0000.03714.61
5.3.190.0030.05314.68
5.3.180.0000.08014.64
5.3.170.0000.03714.54
5.3.160.0000.04714.51
5.3.150.0000.03714.48
5.3.140.0000.03014.67
5.3.130.0000.04014.48
5.3.120.0030.04014.49
5.3.110.0100.05714.48
5.3.100.0030.03713.98
5.3.90.0000.07014.00
5.3.80.0000.07313.97
5.3.70.0030.04314.03
5.3.60.0030.03714.10
5.3.50.0030.04714.10
5.3.40.0000.03714.09
5.3.30.0000.05314.02
5.3.20.0030.07013.72
5.3.10.0000.06013.68
5.3.00.0000.07713.67
5.2.170.0030.03312.19
5.2.160.0000.02712.19
5.2.150.0000.03012.19
5.2.140.0030.04712.19
5.2.130.0070.05712.19
5.2.120.0030.05712.19
5.2.110.0030.02712.19
5.2.100.0130.04712.19
5.2.90.0000.05712.19
5.2.80.0070.06012.19
5.2.70.0030.04012.19
5.2.60.0030.06312.19
5.2.50.0030.06012.19
5.2.40.0000.06712.19
5.2.30.0030.06012.19
5.2.20.0070.06012.19
5.2.10.0070.05312.19
5.2.00.0100.05712.19
5.1.60.0000.04712.19
5.1.50.0030.05312.19
5.1.40.0000.05312.19
5.1.30.0030.05712.19
5.1.20.0070.05712.19
5.1.10.0070.04312.19
5.1.00.0100.04312.19
5.0.50.0030.04312.19
5.0.40.0030.02712.19
5.0.30.0030.04712.19
5.0.20.0030.04012.19
5.0.10.0000.04712.19
5.0.00.0000.07012.19
4.4.90.0000.03712.19
4.4.80.0000.03712.19
4.4.70.0030.03712.19
4.4.60.0030.03312.19
4.4.50.0000.03012.19
4.4.40.0000.05312.19
4.4.30.0070.03012.19
4.4.20.0030.03012.19
4.4.10.0030.03312.19
4.4.00.0030.05012.19
4.3.110.0000.03712.19
4.3.100.0000.01712.19
4.3.90.0030.03312.19
4.3.80.0000.05712.19
4.3.70.0000.03712.19
4.3.60.0030.03312.19
4.3.50.0000.03312.19
4.3.40.0000.05312.19
4.3.30.0000.03712.19
4.3.20.0030.02712.19
4.3.10.0030.02012.19
4.3.00.0000.03712.19

preferences:
46.27 ms | 401 KiB | 5 Q