3v4l.org

run code in 300+ PHP versions simultaneously
<?php @session_id('foobar'); @session_id(''); var_dump(session_id()); ?>

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)
8.3.60.0150.00018.42
8.3.50.0120.00318.31
8.3.40.0080.00818.28
8.3.30.0200.00318.55
8.3.20.0000.00720.21
8.3.10.0080.00022.05
8.3.00.0060.00321.73
8.2.180.0140.00416.50
8.2.170.0070.00722.96
8.2.160.0060.00922.31
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0100.00022.25
8.2.120.0000.00826.35
8.2.110.0080.00322.27
8.2.100.0040.00817.78
8.2.90.0000.00819.16
8.2.80.0030.00517.97
8.2.70.0100.00017.63
8.2.60.0030.00617.80
8.2.50.0000.00818.10
8.2.40.0060.00322.15
8.2.30.0050.00319.16
8.2.20.0050.00317.90
8.2.10.0000.00717.96
8.2.00.0070.00017.85
8.1.280.0030.01325.92
8.1.270.0080.00020.26
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0040.00420.89
8.1.230.0050.00619.16
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0000.01017.25
8.1.190.0040.00417.23
8.1.180.0040.00420.20
8.1.170.0050.00318.59
8.1.160.0070.00018.73
8.1.150.0040.00418.56
8.1.140.0050.00317.54
8.1.130.0000.00718.92
8.1.120.0040.00417.32
8.1.110.0030.00317.38
8.1.100.0040.00417.25
8.1.90.0040.00417.41
8.1.80.0040.00417.39
8.1.70.0000.00717.41
8.1.60.0040.00417.38
8.1.50.0000.00717.34
8.1.40.0030.00517.30
8.1.30.0050.00317.53
8.1.20.0050.00217.56
8.1.10.0000.00717.37
8.1.00.0090.00017.40
8.0.300.0040.00418.77
8.0.290.0040.00416.63
8.0.280.0000.00718.33
8.0.270.0030.00317.18
8.0.260.0030.00318.23
8.0.250.0030.00316.85
8.0.240.0080.00016.77
8.0.230.0070.00016.86
8.0.220.0000.00716.85
8.0.210.0000.00716.83
8.0.200.0000.00616.73
8.0.190.0040.00416.87
8.0.180.0070.00016.85
8.0.170.0040.00416.85
8.0.160.0040.00416.75
8.0.150.0050.00316.64
8.0.140.0000.00716.84
8.0.130.0040.00413.24
8.0.120.0080.00016.74
8.0.110.0030.00616.81
8.0.100.0000.00816.80
8.0.90.0030.00316.88
8.0.80.0160.00016.77
8.0.70.0070.00016.84
8.0.60.0030.00616.68
8.0.50.0020.00516.84
8.0.30.0120.00816.90
8.0.20.0100.01017.40
8.0.10.0070.00016.83
8.0.00.0110.00716.63
7.4.330.0070.00015.55
7.4.320.0030.00316.56
7.4.300.0030.00316.42
7.4.290.0090.00016.41
7.4.280.0040.00416.51
7.4.270.0040.00416.57
7.4.260.0000.00616.34
7.4.250.0030.00316.44
7.4.240.0050.00216.57
7.4.230.0030.00316.34
7.4.220.0120.00616.48
7.4.210.0000.01416.52
7.4.200.0000.00716.50
7.4.160.0140.00416.37
7.4.150.0120.00817.40
7.4.140.0120.00917.86
7.4.130.0180.00016.31
7.4.120.0080.01116.32
7.4.110.0110.00916.41
7.4.100.0160.00616.44
7.4.90.0100.00616.43
7.4.80.0030.01419.39
7.4.70.0190.00016.54
7.4.60.0070.01016.32
7.4.50.0030.01216.38
7.4.40.0090.00616.32
7.4.30.0000.01616.54
7.4.10.0110.00714.99
7.4.00.0100.00514.87
7.3.330.0000.00513.00
7.3.320.0050.00012.96
7.3.310.0060.00015.95
7.3.300.0040.00416.16
7.3.290.0060.00816.13
7.3.280.0060.01116.10
7.3.270.0120.00417.40
7.3.260.0110.00616.42
7.3.250.0100.00816.15
7.3.240.0080.01216.24
7.3.230.0070.01016.31
7.3.210.0120.00616.32
7.3.200.0080.00816.06
7.3.190.0090.01116.02
7.3.180.0180.00016.35
7.3.170.0090.00616.48
7.3.160.0110.01116.44
7.3.130.0090.00614.37
7.3.120.0120.00614.70
7.3.110.0100.01014.75
7.3.100.0040.01114.50
7.3.90.0090.00914.85
7.3.80.0070.01014.85
7.3.70.0080.00314.76
7.3.60.0090.00614.82
7.3.50.0070.01014.85
7.3.40.0060.00914.63
7.3.30.0070.00714.72
7.3.20.0040.01516.57
7.3.10.0090.00916.61
7.3.00.0040.00716.57
7.2.330.0150.00416.51
7.2.320.0170.00616.46
7.2.310.0170.00016.35
7.2.300.0110.01116.37
7.2.290.0080.00816.59
7.2.260.0070.00715.09
7.2.250.0070.01015.10
7.2.240.0120.00414.84
7.2.230.0040.00815.04
7.2.220.0060.00914.82
7.2.210.0050.01615.00
7.2.200.0060.00614.69
7.2.190.0100.01014.87
7.2.180.0090.00614.96
7.2.170.0090.00315.06
7.2.160.0030.01714.68
7.2.150.0120.00316.71
7.2.140.0100.01016.42
7.2.130.0040.00816.71
7.2.120.0040.00816.82
7.2.110.0000.01016.66
7.2.100.0070.00716.93
7.2.90.0040.00716.69
7.2.80.0060.00916.84
7.2.70.0070.01016.81
7.2.60.0080.00816.77
7.2.50.0070.00416.66
7.2.40.0000.01416.57
7.2.30.0080.00416.79
7.2.20.0000.01116.88
7.2.10.0110.00716.82
7.2.00.0110.00616.84
7.1.330.0000.01215.45
7.1.320.0090.01215.69
7.1.310.0090.00316.01
7.1.300.0130.00315.70
7.1.290.0130.00015.42
7.1.280.0100.00315.66
7.1.270.0170.00015.61
7.1.260.0090.00615.42
7.1.250.0090.00315.72
7.1.240.0090.00315.69
7.1.230.0060.00615.66
7.1.220.0060.00915.35
7.1.210.0110.00415.90
7.1.200.0050.00815.68
7.1.190.0070.00715.85
7.1.180.0070.00415.70
7.1.170.0110.00415.70
7.1.160.0070.01015.86
7.1.150.0030.00715.85
7.1.140.0090.00315.69
7.1.130.0040.00415.54
7.1.120.0030.00915.59
7.1.110.0060.00615.67
7.1.100.1800.00716.05
7.1.90.1440.00615.85
7.1.80.1330.01015.97
7.1.70.1760.00615.27
7.1.60.1840.00824.50
7.1.50.1240.00824.22
7.1.40.1270.01224.07
7.1.30.1210.01124.14
7.1.20.1700.00824.12
7.1.10.1590.00715.12
7.1.00.1360.01215.17
7.0.330.0090.00615.48
7.0.320.0060.00615.29
7.0.310.0070.00715.32
7.0.300.0070.00715.38
7.0.290.0030.01015.28
7.0.280.0000.01215.17
7.0.270.0070.00515.24
7.0.260.0070.00715.32
7.0.250.0090.00615.16
7.0.240.1990.00715.54
7.0.230.1510.01415.51
7.0.220.1100.01115.51
7.0.210.1180.00614.89
7.0.200.1680.00915.16
7.0.190.1440.00615.17
7.0.180.1090.00914.83
7.0.170.1300.00814.94
7.0.160.1900.01214.80
7.0.150.1480.00814.84
7.0.140.1570.01214.99
7.0.130.1860.01014.91
7.0.120.1820.00514.98
7.0.110.1200.00814.78
7.0.100.1220.01314.74
7.0.90.1820.00514.81
7.0.80.1140.01114.93
7.0.70.1200.00814.73
7.0.60.1830.00614.72
7.0.50.1740.01214.91
7.0.40.1580.00714.01
7.0.30.1530.00713.98
7.0.20.1520.01113.84
7.0.10.1440.00713.96
7.0.00.1510.00414.06
5.6.400.0060.00614.03
5.6.390.0060.00614.08
5.6.380.0060.00313.66
5.6.370.0030.00913.65
5.6.360.0050.00514.10
5.6.350.0100.00014.42
5.6.340.0070.00713.82
5.6.330.0070.00714.37
5.6.320.0030.01214.27
5.6.310.0040.00814.55
5.6.300.0060.00614.39
5.6.290.0070.01013.79
5.6.280.0030.00614.34
5.6.270.0080.00314.12
5.6.260.0030.01314.30
5.6.250.0090.00614.45
5.6.240.0030.00914.21
5.6.230.0110.00414.21
5.6.220.0030.00714.45
5.6.210.0060.00613.91
5.6.200.0040.00814.21
5.6.190.0090.00013.91
5.6.180.0000.01014.14
5.6.170.0040.00714.06
5.6.160.0030.00714.23
5.6.150.0090.00613.86
5.6.140.0090.00614.08
5.6.130.0000.01314.52
5.6.120.0030.00914.40
5.6.110.0050.00514.45
5.6.100.0040.00414.05
5.6.90.0030.00713.93
5.6.80.0060.00614.28
5.6.70.0080.00614.28
5.6.60.0090.00613.98
5.6.50.0090.00913.86
5.6.40.0000.01813.93
5.6.30.0000.01713.95
5.6.20.0100.00314.18
5.6.10.0060.00614.33
5.6.00.0070.00314.10

preferences:
61.62 ms | 401 KiB | 5 Q