3v4l.org

run code in 300+ PHP versions simultaneously
<?php session_start(); $session1 = session_id(); if (!isset($_SESSION['init'])) { $_SESSION['init'] = "2001-09-11 00:00:00"; } $init1 = @$_SESSION['init'].'<br/>'; session_regenerate_id(false); echo $init1; echo @$_SESSION['init'].'<br/>'; echo 'session id1 ' . $session1; echo '<br />session id2 ' . 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)
8.3.60.0120.00316.50
8.3.50.0110.00723.06
8.3.40.0030.01218.69
8.3.30.0150.00019.16
8.3.20.0080.00020.28
8.3.10.0050.00323.36
8.3.00.0000.00817.59
8.2.180.0070.01118.54
8.2.170.0130.00722.96
8.2.160.0120.00320.42
8.2.150.0050.00324.18
8.2.140.0000.00824.66
8.2.130.0000.00826.16
8.2.120.0040.00421.15
8.2.110.0110.00022.25
8.2.100.0040.00717.84
8.2.90.0040.00419.35
8.2.80.0050.00317.97
8.2.70.0040.00417.63
8.2.60.0330.01018.05
8.2.50.0040.00418.07
8.2.40.0040.00418.22
8.2.30.0040.00418.08
8.2.20.0040.00417.79
8.2.10.0030.00518.27
8.2.00.0040.00417.88
8.1.280.0110.01125.92
8.1.270.0030.00523.85
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0070.00324.04
8.1.230.0080.00419.13
8.1.220.0040.00417.78
8.1.210.0000.00818.77
8.1.200.0090.00017.23
8.1.190.0030.00517.22
8.1.180.0000.00819.01
8.1.170.0050.00318.46
8.1.160.0050.00221.99
8.1.150.0040.00418.88
8.1.140.0080.00017.54
8.1.130.0070.00017.79
8.1.120.0000.00717.43
8.1.110.0080.00017.37
8.1.100.0040.00417.43
8.1.90.0000.00717.53
8.1.80.0000.00717.49
8.1.70.0030.00317.37
8.1.60.0000.00917.50
8.1.50.0080.00017.47
8.1.40.0040.00417.58
8.1.30.0000.00817.57
8.1.20.0030.00517.63
8.1.10.0000.00817.54
8.1.00.0040.00417.55
8.0.300.0060.00318.77
8.0.290.0000.00816.75
8.0.280.0030.00318.41
8.0.270.0050.00316.81
8.0.260.0060.00018.44
8.0.250.0000.00716.95
8.0.240.0050.00316.95
8.0.230.0040.00416.84
8.0.220.0000.00716.83
8.0.210.0070.00017.00
8.0.200.0020.00516.97
8.0.190.0080.00016.85
8.0.180.0000.00816.94
8.0.170.0000.00916.85
8.0.160.0000.00817.04
8.0.150.0000.00816.77
8.0.140.0040.00416.95
8.0.130.0000.00513.42
8.0.120.0030.00516.71
8.0.110.0060.00216.89
8.0.100.0000.00716.75
8.0.90.0040.00416.98
8.0.80.0130.00916.96
8.0.70.0050.00316.81
8.0.60.0040.00416.83
8.0.50.0000.00716.77
8.0.30.0120.01117.00
8.0.20.0090.01117.40
8.0.10.0040.00416.88
8.0.00.0130.00516.79
7.4.330.0000.00615.00
7.4.320.0000.00716.52
7.4.300.0040.00416.60
7.4.290.0000.00716.66
7.4.280.0000.00816.63
7.4.270.0000.00716.46
7.4.260.0000.00816.54
7.4.250.0040.00416.58
7.4.240.0050.00216.56
7.4.230.0030.00516.51
7.4.220.0060.01216.49
7.4.210.0120.00616.64
7.4.200.0040.00416.38
7.4.160.0060.01716.60
7.4.150.0060.01217.40
7.4.140.0110.00617.86
7.4.130.0110.00816.67
7.4.120.0120.00716.49
7.4.110.0070.01016.61
7.4.100.0070.01316.50
7.4.90.0030.01416.54
7.4.80.0110.01119.39
7.4.70.0160.00016.46
7.4.60.0090.00916.74
7.4.50.0040.00416.46
7.4.40.0130.00316.60
7.4.30.0120.00416.43
7.4.00.0110.00715.02
7.3.330.0060.00013.27
7.3.320.0060.00013.25
7.3.310.0000.00716.34
7.3.300.0070.00016.34
7.3.290.0090.00616.34
7.3.280.0060.00816.33
7.3.270.0110.00817.40
7.3.260.0160.00416.40
7.3.250.0120.00716.62
7.3.240.0150.00716.40
7.3.230.0060.01916.62
7.3.210.0090.00916.50
7.3.200.0080.00819.39
7.3.190.0090.00916.31
7.3.180.0100.00616.48
7.3.170.0090.00916.41
7.3.160.0060.00916.47
7.3.120.0060.01315.14
7.3.110.0100.00814.54
7.3.100.0120.00314.77
7.3.90.0080.00815.07
7.3.80.0030.01014.61
7.3.70.0090.00615.02
7.3.60.0070.01014.64
7.3.50.0030.00914.66
7.3.40.0100.00614.95
7.3.30.0060.00915.01
7.3.20.0060.00916.56
7.3.10.0070.00716.70
7.3.00.0070.00716.65
7.2.330.0130.00616.65
7.2.320.0120.01116.31
7.2.310.0090.00616.82
7.2.300.0090.00616.41
7.2.290.0140.00316.84
7.2.250.0070.01015.30
7.2.240.0140.00715.20
7.2.230.0120.00315.08
7.2.220.0040.01115.06
7.2.210.0030.01315.00
7.2.200.0130.00015.02
7.2.190.0040.00815.04
7.2.180.0040.00415.13
7.2.170.0120.00315.09
7.2.60.0060.01017.15
7.2.00.0030.00919.39
7.1.330.0070.01015.64
7.1.320.0080.00815.76
7.1.310.0040.01415.79
7.1.300.0060.00815.81
7.1.290.0050.00516.05
7.1.280.0060.00915.48
7.1.270.0070.01016.00
7.1.260.0030.01015.86
7.1.200.0000.01215.78
7.1.100.0080.00317.99
7.1.70.0000.00816.99
7.1.60.0090.01619.40
7.1.50.0100.00716.84
7.1.00.0030.07322.27
7.0.200.0040.00416.65
7.0.140.0000.07722.10
7.0.60.1030.05719.99
7.0.50.0030.09017.94
7.0.40.0030.05319.96
7.0.30.0170.04720.34
7.0.20.0500.06020.13
7.0.10.0070.04320.18
7.0.00.0100.07720.02
5.6.280.0000.07721.09
5.6.210.1200.06020.53
5.6.200.0070.03718.17
5.6.190.0100.06320.64
5.6.180.0370.05020.77
5.6.170.0230.04720.49
5.6.160.0000.06720.34
5.6.150.0130.06018.07
5.6.140.0030.04318.07
5.6.130.0030.07718.14
5.6.120.0030.07721.00
5.6.110.0170.04321.13
5.6.100.0070.05021.04
5.6.90.0070.08021.01
5.6.80.0100.03720.35
5.5.350.3730.05020.33
5.5.340.0100.08317.92
5.5.330.0000.05320.15
5.5.320.0270.07320.29
5.5.310.0270.07020.26
5.5.300.0030.08318.02
5.5.290.0030.04317.91
5.5.280.0200.07320.88
5.5.270.0070.05720.68
5.5.260.0170.07720.89
5.5.250.0000.08720.69
5.5.240.0270.04720.18
5.4.450.1200.06019.18
5.4.440.1070.05019.43
5.4.430.1130.04719.37
5.4.420.1370.06319.33
5.4.410.1100.04719.42
5.4.400.1100.05019.07
5.4.390.1030.05718.96
5.4.380.1030.05319.14
5.4.370.1370.04719.13
5.4.360.0900.06719.16
5.4.350.1330.05719.11
5.4.340.1230.04319.16
5.4.320.1230.06718.85
5.4.310.0600.05719.16
5.4.300.1230.05319.13
5.4.290.1370.06018.82
5.4.280.0100.05719.15
5.4.270.1270.07719.07
5.4.260.1170.07018.82
5.4.250.1400.05319.07
5.4.240.0330.05318.82
5.4.230.0330.05719.04
5.4.220.1570.04318.97
5.4.210.1430.04719.01
5.4.200.1830.05719.04
5.4.190.1870.05019.07
5.4.180.1830.05719.12
5.4.170.1930.05719.07
5.4.160.1300.05019.02
5.4.150.1400.05319.25
5.4.140.1170.07016.46
5.4.130.1300.05016.29
5.4.120.1370.05716.39
5.4.110.1000.06716.33
5.4.100.0830.06316.36
5.4.90.1500.07716.33
5.4.80.1100.04316.16
5.4.70.1100.04716.35
5.4.60.1330.06716.45
5.4.50.1500.04316.32
5.4.40.0170.06316.34
5.4.30.0170.05016.50
5.4.20.1270.06016.23
5.4.10.0400.05316.40
5.4.00.0170.06315.83
5.3.290.1330.04714.63
5.3.280.1500.05714.55
5.3.270.2230.07314.48
5.3.260.1070.07314.55
5.3.250.1070.05014.52
5.3.240.0970.06014.60
5.3.230.1700.07314.57
5.3.220.1330.05314.47
5.3.210.1200.07014.36
5.3.200.1100.04714.49
5.3.190.1170.05014.44
5.3.180.1470.05014.46
5.3.170.1370.04314.51
5.3.160.1500.06014.48
5.3.150.1330.05314.38
5.3.140.0970.03314.53
5.3.130.0230.06314.49
5.3.120.1200.05014.46
5.3.110.0970.04714.45
5.3.100.0270.06313.96
5.3.90.1800.05313.95
5.3.80.1370.05013.94
5.3.70.1130.05013.86
5.3.60.1230.05313.95
5.3.50.1200.05013.77
5.3.40.1500.05013.80
5.3.30.1100.04713.87
5.3.20.1500.05013.66
5.3.10.1430.03713.60
5.3.00.1430.05713.56
5.2.170.0870.05010.93
5.2.160.1030.06011.14
5.2.150.1000.04311.09
5.2.140.1100.04311.06
5.2.130.1000.04310.96
5.2.120.1170.03311.02
5.2.110.1030.03710.88
5.2.100.0930.03311.02
5.2.90.1370.05010.98
5.2.80.1100.04011.08
5.2.70.1100.03710.97
5.2.60.0870.04310.89
5.2.50.0900.05011.02
5.2.40.0800.03710.91
5.2.30.1000.03010.83
5.2.20.0600.04710.74
5.2.10.0900.04310.96
5.2.00.0700.04710.77
5.1.60.0730.0439.96
5.1.50.0730.0439.97
5.1.40.1130.0379.85
5.1.30.0730.03710.25
5.1.20.0800.05010.45
5.1.10.0870.04310.14
5.1.00.0930.03710.05
5.0.50.0370.0308.53
5.0.40.0400.0338.34
5.0.30.0500.0478.09
5.0.20.0470.0378.17
5.0.10.0470.0238.17
5.0.00.0530.0378.04
4.4.90.0630.0237.64
4.4.80.0430.0207.64
4.4.70.0330.0237.64
4.4.60.0500.0237.64
4.4.50.0430.0277.64
4.4.40.0470.0337.64
4.4.30.0370.0337.64
4.4.20.0430.0207.64
4.4.10.0600.0177.64
4.4.00.0400.0377.64
4.3.110.0470.0237.64
4.3.100.0400.0237.64
4.3.90.0470.0237.64
4.3.80.0630.0377.64
4.3.70.0330.0237.64
4.3.60.0400.0207.64
4.3.50.0430.0277.64
4.3.40.0500.0277.64
4.3.30.0370.0277.64
4.3.20.0200.0207.64
4.3.10.0300.0207.64
4.3.00.0300.0237.64

preferences:
44.46 ms | 401 KiB | 5 Q