3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = new stdClass; $a->b = 1; var_dump(isset($a)); var_dump(isset($a->b)); var_dump(isset($a->b->c)); var_dump(isset($a->b->c->d)); var_dump(isset($a->b->c->d->e));

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)
8.3.60.0100.00718.27
8.3.50.0120.00522.00
8.3.40.0040.01118.84
8.3.30.0110.00419.10
8.3.20.0030.00520.20
8.3.10.0080.00023.48
8.3.00.0050.00320.94
8.2.180.0070.01118.29
8.2.170.0100.00722.96
8.2.160.0100.00320.34
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0000.00826.16
8.2.120.0040.00420.79
8.2.110.0030.00622.09
8.2.100.0090.00319.54
8.2.90.0030.00519.11
8.2.80.0040.00417.97
8.2.70.0070.00317.50
8.2.60.0040.00417.93
8.2.50.0060.00318.07
8.2.40.0040.00819.82
8.2.30.0000.00718.18
8.2.20.0080.00017.55
8.2.10.0040.00418.00
8.2.00.0040.00417.63
8.1.280.0130.00725.92
8.1.270.0110.00323.84
8.1.260.0000.00726.35
8.1.250.0000.00828.09
8.1.240.0070.00318.71
8.1.230.0080.00419.09
8.1.220.0080.00017.74
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0000.00817.22
8.1.180.0080.00018.10
8.1.170.0040.00418.53
8.1.160.0000.00721.83
8.1.150.0050.00218.58
8.1.140.0030.00717.47
8.1.130.0030.00517.89
8.1.120.0040.00417.39
8.1.110.0040.00417.43
8.1.100.0030.00517.35
8.1.90.0070.00017.46
8.1.80.0000.00817.42
8.1.70.0070.00017.31
8.1.60.0120.00017.48
8.1.50.0080.00017.54
8.1.40.0040.00417.33
8.1.30.0040.00417.63
8.1.20.0000.00817.61
8.1.10.0000.00717.48
8.1.00.0080.00017.51
8.0.300.0040.00418.77
8.0.290.0000.00717.04
8.0.280.0040.00418.42
8.0.270.0030.00317.20
8.0.260.0060.00017.26
8.0.250.0030.00316.93
8.0.240.0030.00316.89
8.0.230.0000.00716.91
8.0.220.0070.00016.71
8.0.210.0000.00716.74
8.0.200.0070.00016.82
8.0.190.0040.00416.90
8.0.180.0000.00716.82
8.0.170.0000.00716.74
8.0.160.0080.00016.83
8.0.150.0000.00816.73
8.0.140.0070.00016.74
8.0.130.0000.00613.22
8.0.120.0060.00316.66
8.0.110.0030.00516.85
8.0.100.0070.00016.70
8.0.90.0040.00416.74
8.0.80.0120.00916.82
8.0.70.0040.00416.79
8.0.60.0000.00816.77
8.0.50.0030.00516.94
8.0.30.0090.00917.07
8.0.20.0130.00517.40
8.0.10.0000.00716.97
8.0.00.0090.01016.48
7.4.330.0000.00515.00
7.4.320.0060.00016.49
7.4.300.0070.00016.57
7.4.290.0030.00316.57
7.4.280.0040.00416.48
7.4.270.0050.00216.63
7.4.260.0030.00516.56
7.4.250.0050.00216.57
7.4.240.0020.00516.55
7.4.230.0000.00616.27
7.4.220.0150.00916.64
7.4.210.0000.01416.61
7.4.200.0000.00716.52
7.4.190.0020.00516.32
7.4.160.0080.00816.43
7.4.150.0140.01017.40
7.4.140.0120.00517.86
7.4.130.0130.00516.47
7.4.120.0080.01016.53
7.4.110.0120.00716.59
7.4.100.0120.00616.28
7.4.90.0060.01016.48
7.4.80.0170.00719.39
7.4.70.0060.01516.52
7.4.60.0060.01116.34
7.4.50.0000.00916.15
7.4.40.0000.01716.60
7.4.30.0070.00716.54
7.4.00.0000.01315.00
7.3.330.0030.00313.01
7.3.320.0000.00613.04
7.3.310.0040.00416.26
7.3.300.0000.00616.04
7.3.290.0070.00716.17
7.3.280.0100.00616.23
7.3.270.0120.00617.40
7.3.260.0090.00916.31
7.3.250.0090.00916.39
7.3.240.0090.01716.58
7.3.230.0030.01316.54
7.3.210.0030.01316.59
7.3.200.0070.01119.39
7.3.190.0090.01016.20
7.3.180.0030.01316.64
7.3.170.0050.01116.27
7.3.160.0180.00016.44
7.3.120.0120.00314.84
7.2.330.0030.01416.75
7.2.320.0030.01316.43
7.2.310.0040.01216.58
7.2.300.0100.01416.63
7.2.290.0110.00916.74
7.2.60.0150.00016.82
7.2.00.0060.00619.25
7.1.200.0000.00615.76
7.1.100.0090.00617.93
7.1.70.0070.00017.00
7.1.60.0200.00719.70
7.1.50.0090.00316.80
7.1.00.0000.08022.51
7.0.200.0070.00316.52
7.0.140.0000.07721.98
7.0.60.0070.08320.07
7.0.50.0030.07317.86
7.0.40.0130.06719.98
7.0.30.0200.08020.17
7.0.20.0170.04020.33
7.0.10.0270.04020.17
7.0.00.0130.07720.16
5.6.280.0070.07020.78
5.6.210.0070.08020.54
5.6.200.0070.05318.26
5.6.190.0070.04020.56
5.6.180.3700.04720.23
5.6.170.0300.08720.41
5.6.160.0030.09020.30
5.6.150.0130.03718.21
5.6.140.0100.06318.12
5.6.130.0030.05718.14
5.6.120.0170.06320.98
5.6.110.0170.07320.96
5.6.100.0070.08720.96
5.6.90.0100.04320.96
5.6.80.0130.06320.38
5.6.70.0230.08320.38
5.5.350.0130.08320.37
5.5.340.0030.05018.01
5.5.330.0030.04020.43
5.5.320.0530.06720.15
5.5.310.0230.04020.31
5.5.300.0070.07717.91
5.5.290.0070.08017.95
5.5.280.0070.04020.77
5.5.270.0070.04320.83
5.5.260.0170.07320.79
5.5.250.0100.08320.57
5.5.240.0100.04320.27
5.4.450.0130.05319.58
5.4.440.0730.06719.27
5.4.430.0900.04719.13
5.4.420.0630.00019.31
5.4.410.0200.07318.94
5.4.400.0270.04718.77
5.4.390.0300.05718.46
5.4.380.0130.05318.74
5.4.370.0170.04718.59
5.4.360.0000.04718.71
5.4.350.0080.04411.98
5.4.340.0070.04611.97
5.4.320.0050.04612.46
5.4.310.0110.04312.45
5.4.300.0130.05812.46
5.4.290.0100.05912.45
5.4.280.0130.05112.35
5.4.270.0090.05012.35
5.4.260.0060.04412.35
5.4.250.0040.04312.35
5.4.240.0050.03912.35
5.4.230.0060.04112.34
5.4.220.0080.03612.34
5.4.210.0030.04112.34
5.4.200.0060.04312.34
5.4.190.0130.04612.34
5.4.180.0130.05212.34
5.4.170.0100.05612.35
5.4.160.0080.05412.35
5.4.150.0050.06112.34
5.4.140.0040.04612.02
5.4.130.0090.04212.02
5.4.120.0080.05811.97
5.4.110.0050.04211.97
5.4.100.0060.03911.96
5.4.90.0080.03711.97
5.4.80.0060.03811.97
5.4.70.0090.03311.96
5.4.60.0080.03411.96
5.4.50.0080.03611.96
5.4.40.0040.03811.95
5.4.30.0060.03711.95
5.4.20.0050.05011.95
5.4.10.0100.06311.95
5.4.00.0060.05411.43
5.3.290.0050.04012.80
5.3.280.0090.05812.71
5.3.270.0190.10612.72
5.3.260.0110.08412.72
5.3.250.0140.06212.71
5.3.240.0070.05312.71
5.3.230.0090.06712.71
5.3.220.0070.06912.68
5.3.210.0120.06212.68
5.3.200.0090.05412.68
5.3.190.0100.06412.68
5.3.180.0110.07412.67
5.3.170.0080.05912.67
5.3.160.0170.06412.67
5.3.150.0070.06412.67
5.3.140.0090.06612.66
5.3.130.0110.04512.66
5.3.120.0060.06012.66
5.3.110.0070.03912.66
5.3.100.0040.03912.12
5.3.90.0060.04412.08
5.3.80.0070.03512.07
5.3.70.0080.03812.07
5.3.60.0090.06012.06
5.3.50.0110.05212.00
5.3.40.0100.05912.00
5.3.30.0100.05411.94
5.3.20.0100.06211.72
5.3.10.0070.05411.69
5.3.00.0090.05411.68
5.2.170.0100.0659.18
5.2.160.0140.0569.18
5.2.150.0070.0399.18
5.2.140.0030.0459.18
5.2.130.0050.0419.14
5.2.120.0080.0399.14
5.2.110.0110.0449.14
5.2.100.0080.0479.14
5.2.90.0140.0609.14
5.2.80.0130.0619.13
5.2.70.0120.0369.13
5.2.60.0030.0339.08
5.2.50.0080.0329.05
5.2.40.0050.0349.03
5.2.30.0060.0309.01
5.2.20.0050.0329.00
5.2.10.0090.0608.92
5.2.00.0100.0428.78
5.1.60.0050.0388.06
5.1.50.0060.0378.06
5.1.40.0070.0408.04
5.1.30.0070.0418.39
5.1.20.0090.0408.41
5.1.10.0060.0408.14
5.1.00.0100.0338.14
5.0.50.0060.0276.61
5.0.40.0140.0546.47
5.0.30.0070.0476.29
5.0.20.0050.0296.25
5.0.10.0090.0546.23
5.0.00.0090.0446.23
4.4.90.0050.0254.78
4.4.80.0040.0254.75
4.4.70.0070.0234.75
4.4.60.0050.0244.76
4.4.50.0050.0234.77
4.4.40.0080.0324.71
4.4.30.0040.0234.76
4.4.20.0060.0194.84
4.4.10.0060.0254.85
4.4.00.0050.0334.76
4.3.110.0040.0444.67
4.3.100.0050.0224.67
4.3.90.0120.0234.63
4.3.80.0030.0364.58
4.3.70.0020.0154.63
4.3.60.0040.0164.63
4.3.50.0040.0454.63
4.3.40.0060.0394.54
4.3.30.0010.0233.29
4.3.20.0030.0163.26
4.3.10.0040.0193.22
4.3.00.0000.0237.43

preferences:
58.19 ms | 401 KiB | 5 Q