3v4l.org

run code in 300+ PHP versions simultaneously
<?php class foo{ public $bar = null; } $a = null; $b = new foo(); var_dump(isset($a)); var_dump(isset($b->bar));

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)
8.3.60.0090.00618.25
8.3.50.0080.00821.09
8.3.40.0090.00618.67
8.3.30.0100.00318.92
8.3.20.0070.01020.16
8.3.10.0000.00722.05
8.3.00.0040.00422.39
8.2.180.0090.00916.38
8.2.170.0110.00422.96
8.2.160.0100.00720.57
8.2.150.0040.00424.18
8.2.140.0000.01524.66
8.2.130.0060.01226.16
8.2.120.0030.00519.54
8.2.110.0060.00622.27
8.2.100.0070.00419.31
8.2.90.0090.00019.26
8.2.80.0030.00519.39
8.2.70.0030.00617.21
8.2.60.0030.00617.91
8.2.50.0030.00618.07
8.2.40.0090.00018.02
8.2.30.0030.00617.87
8.2.20.0070.00017.49
8.2.10.0040.00417.61
8.2.00.0050.00317.58
8.1.280.0170.00325.92
8.1.270.0040.00420.16
8.1.260.0070.00026.35
8.1.250.0020.00528.09
8.1.240.0040.00423.79
8.1.230.0050.00618.92
8.1.220.0040.00417.74
8.1.210.0030.00618.77
8.1.200.0060.00317.35
8.1.190.0020.00517.28
8.1.180.0060.00318.57
8.1.170.0000.00818.58
8.1.160.0000.00722.12
8.1.150.0070.00018.61
8.1.140.0080.00017.34
8.1.130.0000.00917.80
8.1.120.0080.00017.38
8.1.110.0000.00817.39
8.1.100.0040.00417.39
8.1.90.0030.00517.26
8.1.80.0000.00717.32
8.1.70.0030.00317.39
8.1.60.0050.00317.58
8.1.50.0030.00617.39
8.1.40.0060.00317.45
8.1.30.0000.00717.39
8.1.20.0000.00817.43
8.1.10.0040.00417.45
8.1.00.0060.00317.48
8.0.300.0000.00718.77
8.0.290.0030.00517.05
8.0.280.0000.00718.47
8.0.270.0000.00817.19
8.0.260.0040.00416.66
8.0.250.0000.00716.76
8.0.240.0040.00416.85
8.0.230.0000.00716.75
8.0.220.0070.00016.85
8.0.210.0000.00716.71
8.0.200.0030.00616.89
8.0.190.0060.00316.86
8.0.180.0000.00716.88
8.0.170.0080.00016.89
8.0.160.0030.00516.70
8.0.150.0000.00716.75
8.0.140.0000.00816.68
8.0.130.0030.00313.21
8.0.120.0060.00316.77
8.0.110.0030.00516.84
8.0.100.0030.00316.75
8.0.90.0030.00316.76
8.0.80.0060.00916.78
8.0.70.0000.00716.70
8.0.60.0040.00416.61
8.0.50.0030.00416.78
8.0.30.0070.01317.04
8.0.20.0110.00917.40
8.0.10.0050.00216.90
8.0.00.0140.00516.82
7.4.330.0000.00515.14
7.4.320.0070.00016.42
7.4.300.0040.00416.52
7.4.290.0030.00316.39
7.4.280.0000.00816.54
7.4.270.0000.00716.43
7.4.260.0030.00316.48
7.4.250.0000.00716.52
7.4.240.0020.00616.51
7.4.230.0000.00616.64
7.4.220.0190.01216.56
7.4.210.0090.00616.42
7.4.200.0040.00416.38
7.4.190.0000.00716.63
7.4.160.0080.01216.29
7.4.150.0120.00617.40
7.4.140.0080.01317.86
7.4.130.0050.01216.60
7.4.120.0140.00416.56
7.4.110.0170.00016.48
7.4.100.0100.00716.41
7.4.90.0120.00616.34
7.4.80.0100.00719.39
7.4.70.0160.00716.28
7.4.60.0090.00916.53
7.4.50.0050.00016.17
7.4.40.0000.01622.77
7.4.30.0090.00616.33
7.4.00.0060.00614.63
7.3.330.0000.00513.23
7.3.320.0000.00513.14
7.3.310.0030.00316.07
7.3.300.0000.00716.18
7.3.290.0120.00316.23
7.3.280.0080.00816.16
7.3.270.0070.01017.40
7.3.260.0190.00016.55
7.3.250.0130.00816.35
7.3.240.0080.01616.22
7.3.230.0180.00616.39
7.3.210.0090.01016.44
7.3.200.0120.00419.39
7.3.190.0100.00716.52
7.3.180.0090.00916.32
7.3.170.0120.00616.27
7.3.160.0090.00616.17
7.3.120.0100.00614.74
7.2.330.0140.00316.59
7.2.320.0110.00616.69
7.2.310.0060.01716.32
7.2.300.0140.00916.72
7.2.290.0100.00716.63
7.1.70.0000.00717.03
7.1.60.0030.01017.07
7.1.50.0080.00316.98
7.1.00.0030.03322.33
7.0.200.0100.00716.35
7.0.140.0070.07021.92
7.0.60.0100.08019.78
7.0.50.0100.08017.87
7.0.40.0030.09020.18
7.0.30.0270.04320.26
7.0.20.0330.07020.19
7.0.10.0070.09020.31
7.0.00.0070.08020.06
5.6.280.0070.07021.02
5.6.210.0170.07020.46
5.6.200.0130.05718.16
5.6.190.0000.08720.33
5.6.180.0300.06720.55
5.6.170.0270.05320.53
5.6.160.0230.06720.54
5.6.150.0030.05018.19
5.6.140.0100.08018.18
5.6.130.0030.05018.18
5.6.120.0100.08020.96
5.6.110.0100.06721.13
5.6.100.0100.08020.89
5.6.90.0170.07321.10
5.6.80.0070.06020.52
5.6.70.4470.04020.50
5.5.350.0170.04320.52
5.5.340.0070.06718.08
5.5.330.0030.04320.19
5.5.320.0170.04320.32
5.5.310.0200.03720.34
5.5.300.0030.06717.95
5.5.290.0100.04717.97
5.5.280.0100.03320.77
5.5.270.0000.04720.86
5.5.260.0100.07020.77
5.5.250.0130.08020.79
5.5.240.0230.05020.07
5.4.450.0070.06719.19
5.4.440.0170.05719.33
5.4.430.0270.05319.15
5.4.420.0100.06719.57
5.4.410.0600.05319.17
5.4.400.0330.08018.87
5.4.390.0430.05318.63
5.4.380.0100.06718.84
5.4.370.0200.04718.55
5.4.360.0070.05718.55
5.4.350.0100.03412.02
5.4.340.0100.04412.01
5.4.320.0040.03912.50
5.4.310.0050.03812.49
5.4.300.0110.03412.50
5.4.290.0080.05012.49
5.4.280.0050.03512.39
5.4.270.0030.04812.39
5.4.260.0050.03812.39
5.4.250.0100.04718.94
5.4.240.0100.05018.75
5.4.230.0100.04718.73
5.4.220.0030.05718.85
5.4.210.0070.05318.75
5.4.200.0130.04318.63
5.4.190.0130.04718.75
5.4.180.0100.05018.71
5.4.170.0070.05318.78
5.4.160.0070.05018.88
5.4.150.0100.05018.91
5.4.140.0030.05716.55
5.4.130.0070.04716.59
5.4.120.0100.04716.55
5.4.110.0100.04716.47
5.4.100.0070.04716.50
5.4.90.0070.04716.39
5.4.80.0070.04716.57
5.4.70.0130.04716.47
5.4.60.0170.07016.55
5.4.50.0130.06316.36
5.4.40.0300.05016.49
5.4.30.0070.04716.30
5.4.20.0070.05316.59
5.4.10.0000.05316.45
5.4.00.0030.05015.83
5.3.290.0070.04312.80
5.3.280.0130.04314.65
5.3.270.0200.05314.52
5.3.260.0100.05014.63
5.3.250.0100.04714.57
5.3.240.0030.05714.43
5.3.230.0000.06014.75
5.3.220.0070.05314.69
5.3.210.0030.05714.69
5.3.200.0200.03714.73
5.3.190.0070.05014.64
5.3.180.0100.05014.73
5.3.170.0030.05314.62
5.3.160.0070.07314.62
5.3.150.0100.04714.71
5.3.140.0100.05014.68
5.3.130.0130.04314.62
5.3.120.0100.05014.61
5.3.110.0130.04714.52
5.3.100.0070.04714.12
5.3.90.0100.06714.17
5.3.80.0030.05314.19
5.3.70.0030.05313.98
5.3.60.0100.04313.89
5.3.50.0070.04713.95
5.3.40.0070.05014.03
5.3.30.0070.05013.97
5.3.20.0000.05713.77
5.3.10.0030.05313.82
5.3.00.0070.05013.71
5.2.170.0070.04011.04
5.2.160.0100.03311.19
5.2.150.0030.04711.14
5.2.140.0100.03311.31
5.2.130.0000.04311.18
5.2.120.0000.04311.18
5.2.110.0000.04311.27
5.2.100.0070.03711.16
5.2.90.0070.03711.17
5.2.80.0000.05311.24
5.2.70.0030.04311.08
5.2.60.0000.05011.13
5.2.50.0070.03710.96
5.2.40.0000.04310.89
5.2.30.0100.03311.04
5.2.20.0130.03311.13
5.2.10.0130.03010.82
5.2.00.0100.05010.77
5.1.60.0100.02710.00
5.1.50.0100.0309.98
5.1.40.0030.04710.05
5.1.30.0100.02710.28
5.1.20.0000.04010.42
5.1.10.0030.03710.05
5.1.00.0000.03710.16
5.0.50.0030.0279.25
5.0.40.0070.0339.25
5.0.30.0000.0439.25
5.0.20.0000.0309.25
5.0.10.0070.0239.25
5.0.00.0000.0439.25
4.4.90.0000.0239.25
4.4.80.0030.0179.25
4.4.70.0000.0279.25
4.4.60.0030.0209.25
4.4.50.0030.0209.25
4.4.40.0070.0309.25
4.4.30.0030.0209.25
4.4.20.0030.0209.25
4.4.10.0000.0279.25
4.4.00.0070.0309.25
4.3.110.0030.0239.25
4.3.100.0030.0209.25
4.3.90.0030.0179.25
4.3.80.0000.0339.25
4.3.70.0070.0139.25
4.3.60.0030.0179.25
4.3.50.0030.0239.25
4.3.40.0000.0339.25
4.3.30.0030.0209.25
4.3.20.0030.0209.25
4.3.10.0130.0109.25
4.3.00.0030.0206.48

preferences:
29.34 ms | 401 KiB | 5 Q