3v4l.org

run code in 300+ PHP versions simultaneously
<?php session_start(); $_SESSION = array('a' => 5, 'b' => 'x'); var_dump($_SESSION); var_dump(session_encode());

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)
8.3.40.0110.01118.84
8.3.30.0110.00418.71
8.3.20.0050.00318.41
8.3.10.0040.00420.18
8.3.00.0080.00019.13
8.2.170.0060.00822.96
8.2.160.0100.00321.19
8.2.150.0040.00424.18
8.2.140.0000.00724.66
8.2.130.0050.00326.16
8.2.120.0070.01319.83
8.2.110.0030.00621.19
8.2.100.0040.00817.65
8.2.90.0030.00619.46
8.2.80.0040.00419.28
8.2.70.0080.00017.63
8.2.60.0030.00517.80
8.2.50.0050.00318.07
8.2.40.0040.00418.28
8.2.30.0070.00018.02
8.2.20.0050.00217.71
8.2.10.0040.00417.70
8.2.00.0040.00417.63
8.1.270.0030.00524.66
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0060.00324.00
8.1.230.0130.00020.91
8.1.220.0040.00417.74
8.1.210.0030.00719.04
8.1.200.0000.00817.25
8.1.190.0000.00917.52
8.1.180.0090.00018.10
8.1.170.0050.00318.89
8.1.160.0080.00018.82
8.1.150.0000.00818.67
8.1.140.0060.00617.57
8.1.130.0030.00317.78
8.1.120.0000.00717.48
8.1.110.0040.00417.36
8.1.100.0030.00617.46
8.1.90.0000.00717.48
8.1.80.0000.00717.51
8.1.70.0000.00717.42
8.1.60.0000.00717.59
8.1.50.0000.00817.34
8.1.40.0050.00317.48
8.1.30.0050.00217.66
8.1.20.0090.00017.55
8.1.10.0030.00617.47
8.1.00.0080.00417.44
8.0.300.0000.00719.95
8.0.290.0070.00016.75
8.0.280.0050.00318.52
8.0.270.0030.00317.33
8.0.260.0000.00716.74
8.0.250.0020.00516.93
8.0.240.0000.01017.02
8.0.230.0000.00716.95
8.0.220.0000.00716.91
8.0.210.0030.00316.80
8.0.200.0000.00617.03
8.0.190.0030.00316.91
8.0.180.0050.00316.94
8.0.170.0000.00916.87
8.0.160.0040.00416.93
8.0.150.0050.00216.82
8.0.140.0000.00916.89
8.0.130.0030.00313.25
8.0.120.0040.00416.79
8.0.110.0040.00416.92
8.0.100.0040.00416.73
8.0.90.0000.00816.92
8.0.80.0040.01116.92
8.0.70.0070.00016.81
8.0.60.0040.00416.96
8.0.50.0000.00816.70
8.0.30.0050.01417.01
8.0.20.0080.01217.07
8.0.10.0050.00216.92
8.0.00.0140.00516.72
7.4.330.0000.00512.97
7.4.320.0060.00016.52
7.4.300.0070.00016.59
7.4.290.0070.00016.47
7.4.280.0070.00016.57
7.4.270.0030.00316.55
7.4.260.0030.00313.29
7.4.250.0090.00016.64
7.4.240.0000.00716.64
7.4.230.0030.00316.63
7.4.220.0150.00416.65
7.4.210.0090.00716.57
7.4.200.0030.00316.48
7.4.190.0000.00816.67
7.4.160.0070.01116.53
7.4.150.0030.01616.42
7.4.140.0070.01016.37
7.4.130.0090.00816.43
7.4.120.0080.00816.57
7.4.110.0090.00916.34
7.4.100.0090.00916.58
7.4.90.0070.01116.56
7.4.80.0060.01416.26
7.4.70.0000.01716.36
7.4.60.0160.00616.44
7.4.50.0020.00216.67
7.4.40.0000.01316.44
7.4.30.0120.00416.52
7.4.00.0050.01315.03
7.3.330.0030.00312.97
7.3.320.0030.00312.89
7.3.310.0070.00016.13
7.3.300.0040.00416.14
7.3.290.0170.00316.15
7.3.280.0090.00916.13
7.3.270.0120.00916.28
7.3.260.0040.01316.35
7.3.250.0050.01316.35
7.3.240.0080.01116.45
7.3.230.0060.01216.20
7.3.210.0000.01716.48
7.3.200.0150.00919.39
7.3.190.0070.01016.18
7.3.180.0100.00616.48
7.3.170.0100.00616.24
7.3.160.0080.00816.22
7.3.120.0070.00814.65
7.3.110.0030.01014.72
7.3.100.0040.00714.69
7.3.90.0060.01314.91
7.3.80.0100.00614.97
7.3.70.0040.00714.79
7.3.60.0060.00814.74
7.3.50.0040.01114.63
7.3.40.0000.01214.68
7.3.30.0000.01314.85
7.3.20.0030.00916.63
7.3.10.0080.00716.62
7.3.00.0100.00516.55
7.2.330.0090.00916.13
7.2.320.0060.01216.61
7.2.310.0090.01216.58
7.2.300.0120.00616.33
7.2.290.0100.01016.58
7.2.250.0090.00915.03
7.2.240.0090.00615.00
7.2.230.0040.01214.67
7.2.220.0030.00914.68
7.2.210.0080.00814.81
7.2.200.0070.00714.83
7.2.190.0130.00314.96
7.2.180.0070.00714.64
7.2.170.0060.00614.61
7.2.130.0030.01216.62
7.2.120.0070.00416.71
7.2.110.0030.00916.82
7.2.100.0030.00916.80
7.2.90.0090.00616.89
7.2.80.0110.00416.89
7.2.70.0070.00416.82
7.2.60.0040.00716.79
7.2.50.0050.00316.51
7.2.40.0060.00616.66
7.2.30.0130.00016.88
7.2.20.0030.00516.83
7.2.10.0130.00016.89
7.2.00.0090.00817.79
7.1.330.0100.00715.75
7.1.320.0030.00915.37
7.1.310.0060.01215.72
7.1.300.0030.01015.47
7.1.290.0040.01115.71
7.1.280.0070.00715.44
7.1.270.0120.00415.65
7.1.260.0080.00815.59
7.1.250.0120.00315.58
7.1.100.0030.01018.02
7.1.70.0040.00417.00
7.1.60.0060.01019.40
7.1.50.0060.01616.87
7.1.00.0000.06022.36
7.0.200.0000.00816.53
7.0.140.0100.06721.95
7.0.120.0030.07322.19
7.0.60.0030.05720.05
7.0.50.0130.07317.68
7.0.40.0100.08017.69
7.0.30.0130.05017.73
7.0.20.0170.07717.76
7.0.10.0100.07017.78
7.0.00.0130.07717.73
5.6.280.0100.06721.09
5.6.210.0030.07720.58
5.6.200.0070.08018.18
5.6.190.0170.07718.22
5.6.180.0100.07718.22
5.6.170.0100.07018.12
5.6.160.0070.08018.22
5.6.150.0100.07718.23
5.6.140.0070.04718.18
5.6.130.0030.08318.16
5.6.120.0070.08318.12
5.6.110.0030.05018.16
5.6.100.0100.08018.17
5.6.90.0070.06318.06
5.6.80.0070.05717.46
5.6.70.0100.07717.53
5.6.60.0070.07017.59
5.6.50.0070.08017.59
5.6.40.0130.04017.47
5.6.30.0100.04017.45
5.6.20.0100.07317.53
5.6.10.0030.06017.52
5.6.00.0000.05317.53
5.5.350.0330.05720.40
5.5.340.0130.07317.98
5.5.330.0070.05017.96
5.5.320.0100.07317.98
5.5.310.0100.08017.92
5.5.300.0070.04017.98
5.5.290.0100.07717.92
5.5.280.0270.06017.98
5.5.270.0070.08017.91
5.5.260.0030.05317.96
5.5.250.0100.08017.76
5.5.240.0130.06317.35
5.5.230.0000.04717.35
5.5.220.0030.05717.32
5.5.210.0130.03317.35
5.5.200.0070.04017.28
5.5.190.0070.08017.33
5.5.180.0070.07317.36
5.5.160.0030.07717.27
5.5.150.0070.05717.26
5.5.140.0100.04317.35
5.5.130.0100.07317.36
5.5.120.0030.06017.26
5.5.110.0030.08017.23
5.5.100.0070.06317.23
5.5.90.0100.07017.25
5.5.80.0100.07317.14
5.5.70.0000.06017.22
5.5.60.0030.07017.25
5.5.50.0070.05317.11
5.5.40.0170.06017.13
5.5.30.0030.05017.12
5.5.20.0100.06317.22
5.5.10.0100.03717.11
5.5.00.0070.08017.29
5.4.450.0070.05319.43
5.4.440.0030.06719.36
5.4.430.0030.07319.21
5.4.420.0170.06319.41
5.4.410.0030.08319.17
5.4.400.0070.05018.98
5.4.390.0100.06019.22
5.4.380.0070.07319.04
5.4.370.0100.05319.12
5.4.360.0070.07318.89
5.4.350.0030.06018.99
5.4.340.0070.04719.05
5.4.320.0170.06719.11
5.4.310.0130.06718.96
5.4.300.0070.08019.09
5.4.290.0000.05319.00
5.4.280.0030.06719.08
5.4.270.0000.05318.95
5.4.260.0100.07718.98
5.4.250.0030.05018.99
5.4.240.0000.07318.97
5.4.230.0100.07318.98
5.4.220.0130.07019.11
5.4.210.0100.06318.96
5.4.200.0100.05018.97
5.4.190.0100.07719.02
5.4.180.0100.06719.20
5.4.170.0100.07018.97
5.4.160.0100.04019.04
5.4.150.0070.04019.07
5.4.140.0030.05716.17
5.4.130.0070.06316.47
5.4.120.0030.04716.42
5.4.110.0100.04016.30
5.4.100.0100.04016.25
5.4.90.0030.04316.50
5.4.80.0070.04716.26
5.4.70.0070.07016.27
5.4.60.0200.06016.39
5.4.50.0100.04716.36
5.4.40.0030.04016.39
5.4.30.0030.05016.23
5.4.20.0100.03716.38
5.4.10.0070.05716.50
5.4.00.0130.03315.70
5.3.290.0100.07714.44
5.3.280.0070.04714.41
5.3.270.0070.08014.57
5.3.260.0070.04014.43
5.3.250.0070.05014.56
5.3.240.0070.03314.54
5.3.230.0200.06714.43
5.3.220.0070.04014.50
5.3.210.0030.08014.48
5.3.200.0030.04014.34
5.3.190.0000.04314.48
5.3.180.0000.05714.48
5.3.170.0100.05014.52
5.3.160.0070.07314.38
5.3.150.0030.06714.38
5.3.140.0070.03314.47
5.3.130.0100.04714.46
5.3.120.0070.04314.32
5.3.110.0000.04014.46
5.3.100.0070.07713.99
5.3.90.0100.07013.83
5.3.80.0070.03713.98
5.3.70.0070.07713.93
5.3.60.0030.05313.96
5.3.50.0070.04713.71
5.3.40.0100.05313.90
5.3.30.0100.03013.88
5.3.20.0070.04313.66
5.3.10.0100.05013.60
5.3.00.0000.04313.54
5.2.170.0030.05710.99
5.2.160.0070.06011.29
5.2.150.0000.03711.29
5.2.140.0070.03310.91
5.2.130.0030.06711.07
5.2.120.0030.06711.13
5.2.110.0030.04311.24
5.2.100.0070.02710.99
5.2.90.0070.04010.87
5.2.80.0030.06711.11
5.2.70.0030.06310.98
5.2.60.0170.05311.19
5.2.50.0000.03311.01
5.2.40.0000.06310.97
5.2.30.0030.06310.98
5.2.20.0070.04010.95
5.2.10.0100.03310.88
5.2.00.0030.03310.78
5.1.60.0070.0279.96
5.1.50.0070.0509.90
5.1.40.0000.0579.95
5.1.30.0070.03710.34
5.1.20.0070.03010.39
5.1.10.0000.03310.10
5.1.00.0030.02710.04
5.0.50.0000.0238.71
5.0.40.0070.0408.71
5.0.30.0030.0538.71
5.0.20.0000.0338.71
5.0.10.0030.0238.71
5.0.00.0000.0438.71
4.4.90.0000.0308.71
4.4.80.0000.0378.71
4.4.70.0070.0138.71
4.4.60.0000.0378.71
4.4.50.0070.0338.71
4.4.40.0000.0508.71
4.4.30.0030.0378.71
4.4.20.0030.0178.71
4.4.10.0000.0208.71
4.4.00.0000.0308.71
4.3.110.0000.0308.71
4.3.100.0000.0338.71
4.3.90.0000.0178.71
4.3.80.0030.0278.71
4.3.70.0000.0138.71
4.3.60.0070.0138.71
4.3.50.0100.0278.71
4.3.40.0000.0278.71
4.3.30.0000.0378.71
4.3.20.0000.0178.71
4.3.10.0000.0378.71
4.3.00.0000.0238.71

preferences:
40.14 ms | 400 KiB | 5 Q