3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = new Object(); $a->lead = Object(); $a->lead->name = 'cool'; if(isset($a->lead->name)){ echo '1'; } if(isset($a->lead->referral)){ echo '2'; }

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)
8.3.60.0030.01218.56
8.3.50.0290.00321.06
8.3.40.0180.00318.97
8.3.30.0110.00319.08
8.3.20.0050.00220.34
8.3.10.0040.00423.70
8.3.00.0080.00019.26
8.2.180.0090.00618.54
8.2.170.0070.00722.96
8.2.160.0040.01120.38
8.2.150.0040.01124.18
8.2.140.0060.00324.66
8.2.130.0120.00626.16
8.2.120.0040.00422.18
8.2.110.0070.00319.38
8.2.100.0090.00317.91
8.2.90.0000.00819.08
8.2.80.0050.00317.97
8.2.70.0030.00617.63
8.2.60.0030.00617.80
8.2.50.0030.00618.07
8.2.40.0060.00319.94
8.2.30.0050.00218.11
8.2.20.0040.00417.60
8.2.10.0070.00017.87
8.2.00.0030.00517.68
8.1.280.0070.01125.92
8.1.270.0060.00321.94
8.1.260.0050.00226.35
8.1.250.0040.00428.09
8.1.240.0060.00320.79
8.1.230.0060.00617.42
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0030.00617.23
8.1.190.0030.00516.88
8.1.180.0040.00418.10
8.1.170.0040.00418.34
8.1.160.0040.00421.99
8.1.150.0000.00718.70
8.1.140.0040.00417.31
8.1.130.0030.00517.64
8.1.120.0000.00717.26
8.1.110.0040.00417.21
8.1.100.0040.00417.24
8.1.90.0030.00417.18
8.1.80.0000.00717.22
8.1.70.0040.00417.18
8.1.60.0000.00917.45
8.1.50.0040.00417.41
8.1.40.0030.00517.33
8.1.30.0040.00417.48
8.1.20.0040.00417.58
8.1.10.0050.00217.50
8.1.00.0000.00817.49
8.0.300.0040.00418.77
8.0.290.0060.00316.75
8.0.280.0000.00818.25
8.0.270.0000.00817.32
8.0.260.0000.00717.07
8.0.250.0040.00417.02
8.0.240.0060.00016.92
8.0.230.0000.00716.87
8.0.220.0070.00016.88
8.0.210.0060.00016.88
8.0.200.0000.00716.99
8.0.190.0050.00316.97
8.0.180.0040.00416.78
8.0.170.0070.00016.90
8.0.160.0040.00416.78
8.0.150.0000.00716.82
8.0.140.0000.00716.80
8.0.130.0000.00613.33
8.0.120.0050.00316.84
8.0.110.0000.00716.77
8.0.100.0040.00416.88
8.0.90.0040.00416.88
8.0.80.0100.00616.93
8.0.70.0040.00416.79
8.0.60.0070.00016.78
8.0.50.0000.00716.75
8.0.30.0100.01716.95
8.0.20.0110.00917.40
8.0.10.0040.00417.06
8.0.00.0100.01116.70
7.4.330.0030.00315.02
7.4.320.0030.00316.36
7.4.300.0030.00316.43
7.4.290.0030.00316.38
7.4.280.0120.00216.33
7.4.270.0030.00316.58
7.4.260.0070.00016.51
7.4.250.0030.00516.43
7.4.240.0050.00216.49
7.4.230.0070.00016.27
7.4.220.0070.01416.55
7.4.210.0100.01016.49
7.4.200.0050.00216.65
7.4.160.0110.00516.56
7.4.150.0190.00617.40
7.4.140.0140.00917.86
7.4.130.0050.01116.41
7.4.120.0030.01416.45
7.4.110.0110.00716.63
7.4.100.0100.00716.50
7.4.90.0100.00616.59
7.4.80.0100.00619.39
7.4.70.0130.00316.35
7.4.60.0150.00016.47
7.4.50.0030.00516.54
7.4.40.0140.00516.55
7.4.30.0060.01016.32
7.4.00.0070.00714.93
7.3.330.0000.00613.01
7.3.320.0020.00213.18
7.3.310.0030.00316.27
7.3.300.0030.00316.30
7.3.290.0140.00516.31
7.3.280.0100.00516.26
7.3.270.0090.00917.40
7.3.260.0070.01016.46
7.3.250.0110.00916.52
7.3.240.0100.01016.24
7.3.230.0080.00816.46
7.3.210.0140.00316.19
7.3.200.0090.00919.39
7.3.190.0210.00416.41
7.3.180.0060.00916.27
7.3.170.0110.00816.35
7.3.160.0120.00916.45
7.2.330.0060.01116.29
7.2.320.0070.01016.22
7.2.310.0130.00916.59
7.2.300.0110.00616.41
7.2.290.0130.00916.26
7.2.60.0080.00416.48
7.2.00.0030.00919.00
7.1.200.0030.00915.71
7.1.100.0080.00817.48
7.1.70.0070.00716.89
7.1.60.0120.01219.11
7.1.50.0070.01016.54
7.1.00.0100.07022.43
7.0.200.0030.00816.41
7.0.140.0030.07321.98
7.0.60.0130.08019.90
7.0.50.0070.05317.81
7.0.40.0070.08720.23
7.0.30.0200.04720.18
7.0.20.0100.04720.20
7.0.10.0070.08720.19
7.0.00.0070.09020.10
5.6.280.0170.06020.86
5.6.210.0130.06020.46
5.6.200.0000.04718.18
5.6.190.0070.05720.39
5.6.180.0270.05320.43
5.6.170.0370.06320.52
5.6.160.0130.07720.32
5.6.150.0000.05018.19
5.6.140.0170.07318.20
5.6.130.0030.08318.14
5.6.120.0170.04020.98
5.6.110.0070.08320.98
5.6.100.0070.07320.88
5.6.90.0100.06720.99
5.6.80.0170.06020.52
5.6.70.4000.04020.37
5.5.350.0130.06720.33
5.5.340.0000.04018.02
5.5.330.0170.07320.47
5.5.320.0270.06320.32
5.5.310.0270.04020.27
5.5.300.0100.05017.91
5.5.290.0030.08017.94
5.5.280.0070.08320.87
5.5.270.0170.07320.79
5.5.260.0200.07320.84
5.5.250.0070.08020.77
5.5.240.0270.08020.27
5.4.450.0770.05319.45
5.4.440.0470.05719.10
5.4.430.0400.06319.27
5.4.420.0670.00019.68
5.4.410.0900.00019.52
5.4.400.0730.00018.96
5.4.390.0600.00019.16
5.4.380.0670.00019.08
5.4.370.0630.00019.08
5.4.360.0600.00019.05
5.4.350.0830.00019.19
5.4.340.0040.04411.97
5.4.320.0080.04112.45
5.4.310.0050.03812.46
5.4.300.0100.04712.45
5.4.290.0060.04512.45
5.4.280.0030.03812.35
5.4.270.0070.03712.35
5.4.260.0070.04012.35
5.4.250.0050.03812.35
5.4.240.0090.03812.35
5.4.230.0050.03812.34
5.4.220.0070.03412.34
5.4.210.0110.03512.34
5.4.200.0060.04312.34
5.4.190.0060.03612.34
5.4.180.0050.03712.34
5.4.170.0050.03812.35
5.4.160.0080.03412.35
5.4.150.0050.03712.34
5.4.140.0100.03512.02
5.4.130.0110.03212.01
5.4.120.0040.03711.97
5.4.110.0070.03511.97
5.4.100.0090.03111.97
5.4.90.0040.04011.97
5.4.80.0050.03711.97
5.4.70.0070.03611.96
5.4.60.0070.04011.96
5.4.50.0080.03511.96
5.4.40.0070.03211.95
5.4.30.0070.03611.95
5.4.20.0060.03811.95
5.4.10.0050.03811.95
5.4.00.0070.03711.44
5.3.290.0070.04412.80
5.3.280.0090.04012.71
5.3.270.0030.04612.73
5.3.260.0060.03812.72
5.3.250.0080.03412.72
5.3.240.0090.03812.72
5.3.230.0090.03812.71
5.3.220.0080.03312.68
5.3.210.0060.04312.68
5.3.200.0040.03712.68
5.3.190.0060.03712.68
5.3.180.0030.03812.68
5.3.170.0040.03712.67
5.3.160.0050.03712.68
5.3.150.0050.03812.68
5.3.140.0070.03612.66
5.3.130.0090.03612.66
5.3.120.0070.03812.66
5.3.110.0060.03812.66
5.3.100.0060.03612.12
5.3.90.0050.04412.09
5.3.80.0080.03812.07
5.3.70.0060.03912.08
5.3.60.0050.04012.06
5.3.50.0080.03312.00
5.3.40.0040.04012.00
5.3.30.0100.03811.95
5.3.20.0080.03211.72
5.3.10.0070.03511.69
5.3.00.0050.03911.68
5.2.170.0060.0449.18
5.2.160.0050.0369.18
5.2.150.0040.0329.18
5.2.140.0030.0349.18
5.2.130.0050.0279.14
5.2.120.0030.0289.14
5.2.110.0040.0299.15
5.2.100.0050.0339.14
5.2.90.0040.0299.14
5.2.80.0060.0289.14
5.2.70.0070.0409.14
5.2.60.0050.0299.09
5.2.50.0040.0309.06
5.2.40.0070.0309.04
5.2.30.0010.0329.01
5.2.20.0050.0309.00
5.2.10.0010.0308.92
5.2.00.0060.0298.78
5.1.60.0030.0248.07
5.1.50.0020.0268.06
5.1.40.0060.0248.04
5.1.30.0090.0288.39
5.1.20.0040.0268.42
5.1.10.0070.0258.14
5.1.00.0080.0248.14
5.0.50.0040.0236.62
5.0.40.0040.0186.48
5.0.30.0040.0366.29
5.0.20.0080.0166.26
5.0.10.0040.0196.24
5.0.00.0030.0356.23
4.4.90.0020.0194.77
4.4.80.0040.0164.75
4.4.70.0030.0144.76
4.4.60.0010.0164.75
4.4.50.0080.0194.77
4.4.40.0050.0264.71
4.4.30.0030.0154.76
4.4.20.0030.0184.84
4.4.10.0010.0174.85
4.4.00.0030.0244.76
4.3.110.0020.0174.67
4.3.100.0040.0154.67
4.3.90.0020.0154.63
4.3.80.0020.0254.58
4.3.70.0020.0154.63
4.3.60.0040.0134.63
4.3.50.0040.0144.62
4.3.40.0030.0234.54
4.3.30.0020.0183.28
4.3.20.0030.0143.25
4.3.10.0030.0143.21
4.3.00.0030.0206.95

preferences:
42.18 ms | 401 KiB | 5 Q