3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(isset($a)); var_dump(is_object($a)); $b = null; var_dump(isset($b)); var_dump(is_object($b));

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)
8.3.60.0140.00718.68
8.3.50.0080.01221.92
8.3.40.0150.00618.79
8.3.30.0070.00719.05
8.3.20.0070.00020.30
8.3.10.0070.00023.67
8.3.00.0050.00219.14
8.2.180.0120.00916.50
8.2.170.0140.01022.96
8.2.160.0070.00720.35
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0050.00326.16
8.2.120.0040.00420.85
8.2.110.0090.01222.24
8.2.100.0110.00517.58
8.2.90.0050.00219.05
8.2.80.0040.00417.97
8.2.70.0000.00917.63
8.2.60.0030.00617.79
8.2.50.0030.00618.07
8.2.40.0000.00819.76
8.2.30.0060.00318.09
8.2.20.0050.00317.78
8.2.10.0030.00517.98
8.2.00.0040.00417.68
8.1.280.0130.00725.92
8.1.270.0030.00523.91
8.1.260.0080.00026.35
8.1.250.0050.00228.09
8.1.240.0040.00423.80
8.1.230.0040.00719.17
8.1.220.0000.00717.74
8.1.210.0040.00418.77
8.1.200.0060.00317.10
8.1.190.0040.00417.13
8.1.180.0000.00718.10
8.1.170.0090.00018.57
8.1.160.0040.00421.89
8.1.150.0050.00318.57
8.1.140.0000.00817.26
8.1.130.0000.00617.78
8.1.120.0030.00317.38
8.1.110.0070.00017.31
8.1.100.0000.00717.39
8.1.90.0000.00717.29
8.1.80.0060.00317.22
8.1.70.0080.00017.29
8.1.60.0050.00517.43
8.1.50.0060.00317.45
8.1.40.0040.00417.35
8.1.30.0030.00617.41
8.1.20.0000.00717.48
8.1.10.0040.00417.35
8.1.00.0030.00617.34
8.0.300.0070.00018.77
8.0.290.0040.00416.75
8.0.280.0000.00818.25
8.0.270.0030.00317.19
8.0.260.0060.00017.13
8.0.250.0000.00716.94
8.0.240.0040.00416.96
8.0.230.0030.00316.99
8.0.220.0000.00716.80
8.0.210.0000.01016.90
8.0.200.0000.00716.91
8.0.190.0080.00016.93
8.0.180.0000.00816.81
8.0.170.0000.00816.88
8.0.160.0070.00016.92
8.0.150.0040.00416.87
8.0.140.0040.00416.88
8.0.130.0060.00013.36
8.0.120.0050.00316.91
8.0.110.0000.00816.86
8.0.100.0040.00316.80
8.0.90.0070.00016.85
8.0.80.0030.01416.86
8.0.70.0040.00416.96
8.0.60.0050.00316.88
8.0.50.0070.00016.90
8.0.30.0110.00816.95
8.0.20.0130.01017.40
8.0.10.0030.00316.93
8.0.00.0070.01016.73
7.4.330.0000.00615.00
7.4.320.0030.00316.43
7.4.300.0000.00616.52
7.4.290.0070.00016.56
7.4.280.0060.00316.48
7.4.270.0030.00316.51
7.4.260.0110.00016.53
7.4.250.0030.00316.38
7.4.240.0020.00516.42
7.4.230.0070.00016.65
7.4.220.0110.00816.50
7.4.210.0070.01116.40
7.4.200.0040.00416.65
7.4.160.0070.00716.57
7.4.150.0060.01217.40
7.4.140.0130.00917.86
7.4.130.0110.00716.55
7.4.120.0110.00616.43
7.4.110.0100.00716.31
7.4.100.0180.00016.54
7.4.90.0110.00716.61
7.4.80.0060.01119.39
7.4.70.0170.00316.61
7.4.60.0090.01516.42
7.4.50.0000.00516.07
7.4.40.0100.00616.36
7.4.30.0080.00816.43
7.4.00.0070.01014.64
7.3.330.0000.00512.89
7.3.320.0030.00312.92
7.3.310.0000.00716.29
7.3.300.0040.00416.05
7.3.290.0080.00616.19
7.3.280.0100.00716.17
7.3.270.0120.00617.40
7.3.260.0170.00016.20
7.3.250.0090.01016.28
7.3.240.0100.00716.20
7.3.230.0040.01516.39
7.3.210.0130.00816.36
7.3.200.0100.00719.39
7.3.190.0040.01216.34
7.3.180.0060.00916.29
7.3.170.0040.01216.27
7.3.160.0100.00716.16
7.3.120.0070.00414.91
7.2.330.0120.00616.52
7.2.320.0000.01616.26
7.2.310.0160.00016.46
7.2.300.0110.00516.44
7.2.290.0130.00916.37
7.2.00.0030.01019.20
7.1.100.0040.00818.24
7.1.70.0070.00717.24
7.1.60.0110.01419.70
7.1.50.0100.01016.89
7.1.00.0070.07322.33
7.0.200.0110.00716.79
7.0.140.0030.07322.04
7.0.60.0000.04320.09
7.0.50.0070.08017.77
7.0.40.0100.08320.13
7.0.30.0700.06320.20
7.0.20.0230.07320.33
7.0.10.0270.08320.16
7.0.00.0070.08320.20
5.6.280.0030.07321.06
5.6.210.0100.07020.50
5.6.200.0170.06318.08
5.6.190.0100.05020.48
5.6.180.0270.06020.61
5.6.170.0270.06320.47
5.6.160.0030.06020.46
5.6.150.0030.03718.22
5.6.140.0070.04718.10
5.6.130.0030.05718.22
5.6.120.0100.08020.96
5.6.110.0100.08320.97
5.6.100.0030.04021.01
5.6.90.0030.04720.95
5.6.80.0030.08320.38
5.6.70.0200.06320.23
5.5.350.0170.06720.40
5.5.340.0100.08017.93
5.5.330.0100.07020.57
5.5.320.0100.07020.48
5.5.310.0330.07320.17
5.5.300.0130.07317.92
5.5.290.0030.07017.87
5.5.280.0030.04320.76
5.5.270.0000.07020.93
5.5.260.0100.05720.79
5.5.250.0130.07020.68
5.5.240.0100.03320.35
5.4.450.0900.06319.45
5.4.440.0930.09319.41
5.4.430.0470.05719.41
5.4.420.0630.00019.62
5.4.410.0000.07318.70
5.4.400.0170.05718.80
5.4.390.0230.05018.72
5.4.380.0270.05318.52
5.4.370.0070.05318.73
5.4.360.0070.05018.58
5.4.350.0100.04711.97
5.4.340.0150.05611.97
5.4.320.0080.04312.45
5.4.310.0060.03712.45
5.4.300.0090.03612.45
5.4.290.0080.03712.45
5.4.280.0030.03912.34
5.4.270.0080.03412.35
5.4.260.0090.04012.34
5.4.250.0100.03412.34
5.4.240.0060.03712.35
5.4.230.0060.03812.34
5.4.220.0090.03912.34
5.4.210.0100.03112.34
5.4.200.0080.03512.34
5.4.190.0060.03712.34
5.4.180.0070.03512.33
5.4.170.0070.03512.34
5.4.160.0080.03712.34
5.4.150.0100.04512.34
5.4.140.0120.04612.02
5.4.130.0150.04012.01
5.4.120.0060.03711.97
5.4.110.0080.03511.96
5.4.100.0070.03511.96
5.4.90.0100.03311.96
5.4.80.0060.04211.96
5.4.70.0060.03411.96
5.4.60.0050.03611.96
5.4.50.0070.03511.96
5.4.40.0060.04011.95
5.4.30.0050.04011.95
5.4.20.0070.03511.95
5.4.10.0050.03611.95
5.4.00.0090.03911.44
5.3.290.0090.03512.80
5.3.280.0100.03712.71
5.3.270.0060.04312.73
5.3.260.0040.04412.72
5.3.250.0100.03712.71
5.3.240.0100.03912.72
5.3.230.0110.04712.71
5.3.220.0070.04112.68
5.3.210.0130.03112.68
5.3.200.0040.03812.68
5.3.190.0060.03812.68
5.3.180.0060.03712.67
5.3.170.0090.03412.67
5.3.160.0080.03412.67
5.3.150.0060.03712.68
5.3.140.0080.03612.66
5.3.130.0100.03512.66
5.3.120.0110.03412.66
5.3.110.0080.03712.66
5.3.100.0130.03012.12
5.3.90.0090.03212.08
5.3.80.0070.03512.07
5.3.70.0030.03912.07
5.3.60.0080.03412.06
5.3.50.0080.03512.00
5.3.40.0050.04112.00
5.3.30.0060.03411.94
5.3.20.0050.03611.72
5.3.10.0110.02911.69
5.3.00.0040.03711.67
5.2.170.0030.0329.18
5.2.160.0050.0299.18
5.2.150.0040.0309.18
5.2.140.0020.0339.18
5.2.130.0050.0289.14
5.2.120.0070.0269.13
5.2.110.0050.0299.14
5.2.100.0090.0249.14
5.2.90.0090.0259.14
5.2.80.0020.0339.13
5.2.70.0040.0319.13
5.2.60.0050.0339.09
5.2.50.0060.0399.05
5.2.40.0060.0379.03
5.2.30.0030.0319.01
5.2.20.0050.0359.00
5.2.10.0100.0268.91
5.2.00.0050.0298.78
5.1.60.0040.0258.06
5.1.50.0040.0258.05
5.1.40.0060.0278.04
5.1.30.0050.0368.39
5.1.20.0060.0388.41
5.1.10.0050.0338.14
5.1.00.0040.0358.13
5.0.50.0010.0236.62
5.0.40.0030.0206.47
5.0.30.0030.0326.29
5.0.20.0050.0196.26
5.0.10.0020.0226.24
5.0.00.0010.0346.23
4.4.90.0020.0174.78
4.4.80.0030.0154.75
4.4.70.0060.0174.75
4.4.60.0020.0164.75
4.4.50.0060.0154.77
4.4.40.0040.0304.71
4.4.30.0010.0174.75
4.4.20.0010.0184.85
4.4.10.0010.0184.85
4.4.00.0040.0244.76
4.3.110.0020.0204.67
4.3.100.0050.0194.66
4.3.90.0040.0154.63
4.3.80.0030.0254.58
4.3.70.0040.0164.63
4.3.60.0050.0164.63
4.3.50.0010.0174.63
4.3.40.0030.0274.54
4.3.30.0020.0173.29
4.3.20.0000.0183.26
4.3.10.0020.0173.22
4.3.00.0130.0276.43

preferences:
63.11 ms | 400 KiB | 5 Q