3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(); $a[] = &$a; var_dump($a === $a);

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)
8.3.60.0110.00418.16
8.3.50.0080.01316.29
8.3.40.0040.01118.59
8.3.30.0120.00318.83
8.3.20.0080.00018.65
8.3.10.0050.00318.90
8.3.00.0030.00619.15
8.2.180.0040.01116.38
8.2.170.0070.00722.96
8.2.160.0150.00018.96
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00417.75
8.2.110.0030.00722.20
8.2.100.0090.00317.84
8.2.90.0080.00019.15
8.2.80.0030.00517.97
8.2.70.0080.00017.75
8.2.60.0000.00818.04
8.2.50.0040.00418.04
8.2.40.0060.00319.23
8.2.30.0060.00317.66
8.2.20.0000.01117.52
8.2.10.0000.00717.67
8.2.00.0030.00517.49
8.1.280.0100.01025.92
8.1.270.0040.00422.19
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0060.00323.92
8.1.230.0000.01117.70
8.1.220.0040.00417.74
8.1.210.0080.00018.77
8.1.200.0040.00417.10
8.1.190.0040.00716.99
8.1.180.0040.00418.10
8.1.170.0000.00817.62
8.1.160.0030.00519.05
8.1.150.0040.00418.58
8.1.140.0070.00017.31
8.1.130.0040.00417.31
8.1.120.0070.00017.43
8.1.110.0040.00417.27
8.1.100.0030.00417.29
8.1.90.0000.00717.34
8.1.80.0000.00717.28
8.1.70.0070.00017.32
8.1.60.0050.00217.54
8.1.50.0000.00717.24
8.1.40.0030.00617.35
8.1.30.0000.00817.56
8.1.20.0040.00417.53
8.1.10.0040.00417.39
8.1.00.0040.00417.30
8.0.300.0070.00018.77
8.0.290.0000.00916.63
8.0.280.0030.00318.41
8.0.270.0030.00317.25
8.0.260.0070.00016.66
8.0.250.0030.00516.95
8.0.240.0000.00716.77
8.0.230.0050.00316.83
8.0.220.0000.00716.82
8.0.210.0040.00416.82
8.0.200.0060.00016.88
8.0.190.0030.00316.86
8.0.180.0040.00416.84
8.0.170.0090.00016.82
8.0.160.0040.00416.91
8.0.150.0080.00016.74
8.0.140.0050.00316.70
8.0.130.0000.00613.29
8.0.120.0000.01016.80
8.0.110.0000.00816.61
8.0.100.0000.00716.93
8.0.90.0070.00016.91
8.0.80.0090.00916.77
8.0.70.0040.00416.84
8.0.60.0000.00816.77
8.0.50.0030.00516.76
8.0.30.0100.01016.77
8.0.20.0120.00916.88
8.0.10.0000.00717.02
8.0.00.0140.00716.72
7.4.330.0020.00212.99
7.4.320.0060.00016.61
7.4.300.0000.00716.49
7.4.290.0030.00316.58
7.4.280.0050.00216.47
7.4.270.0000.00616.60
7.4.260.0030.00313.29
7.4.250.0080.00316.52
7.4.240.0030.00316.60
7.4.230.0000.00816.61
7.4.220.0120.00616.46
7.4.210.0130.00716.54
7.4.200.0000.00716.69
7.4.190.0000.00816.68
7.4.160.0050.01116.24
7.4.150.0090.00916.30
7.4.140.0130.00617.86
7.4.130.0180.00616.49
7.4.120.0060.01216.49
7.4.110.0100.01016.37
7.4.100.0130.00616.35
7.4.90.0070.01116.22
7.4.80.0030.01319.39
7.4.70.0110.00516.37
7.4.60.0080.00816.64
7.4.50.0040.00416.02
7.4.40.0070.00716.55
7.4.30.0100.00716.44
7.4.00.0100.00714.79
7.3.330.0030.00313.12
7.3.320.0070.00013.05
7.3.310.0000.00716.19
7.3.300.0070.00016.18
7.3.290.0090.00616.20
7.3.280.0170.00316.23
7.3.270.0080.00916.45
7.3.260.0040.01516.18
7.3.240.0080.00816.30
7.3.230.0170.00016.30
7.3.210.0110.00516.43
7.3.200.0160.00716.50
7.3.190.0130.00316.31
7.3.180.0070.00716.38
7.3.170.0170.00016.35
7.3.160.0080.01216.36
7.3.120.0040.01414.60
7.2.330.0060.01116.55
7.2.320.0040.01316.60
7.2.310.0080.01516.73
7.2.300.0070.01016.35
7.2.290.0060.01216.67
7.2.60.0040.01116.89
7.2.00.0060.00919.28
7.1.200.0000.01215.64
7.1.100.0090.00618.14
7.1.70.0030.00516.86
7.1.60.0030.02219.25
7.1.50.0040.02116.70
7.1.00.0070.03722.50
7.0.200.0040.00416.67
7.0.140.0030.07321.98
7.0.120.0030.07322.05
7.0.60.0100.08319.92
7.0.50.0070.03717.77
7.0.40.0030.04720.05
7.0.30.0500.06720.02
7.0.20.0200.05020.16
7.0.10.0030.08720.09
7.0.00.0100.08020.10
5.6.280.0000.07720.81
5.6.210.0070.08020.64
5.6.200.0070.07018.13
5.6.190.0030.07020.43
5.6.180.0300.07720.68
5.6.170.0230.08020.48
5.6.160.0130.07720.38
5.6.150.0030.08718.18
5.6.140.0000.04718.21
5.6.130.0030.04018.11
5.6.120.0000.09020.98
5.6.110.0300.07020.98
5.6.100.0130.08721.13
5.6.90.0130.07720.99
5.6.80.0200.06720.37
5.5.350.0130.07320.42
5.5.340.0030.04717.88
5.5.330.0030.07020.36
5.5.320.0330.06020.29
5.5.310.0230.09020.27
5.5.300.0070.08317.91
5.5.290.0030.04017.90
5.5.280.0030.08320.76
5.5.270.0100.08320.88
5.5.260.0100.06320.88
5.5.250.0030.06720.78
5.5.240.0170.06720.27
5.4.450.0330.05719.42
5.4.440.0170.04319.46
5.4.430.0070.04719.45
5.4.420.0230.03319.13
5.4.410.0270.07019.43
5.4.400.0200.03318.91
5.4.390.0230.03319.10
5.4.380.0170.04319.28
5.4.370.0170.05019.13
5.4.360.0200.03319.16
5.4.350.0070.03319.15
5.4.340.0030.04019.07
5.4.320.0130.03319.13
5.4.310.0100.06019.10
5.4.300.0430.03718.81
5.4.290.0030.03719.13
5.4.280.0000.04019.09
5.4.270.0200.04019.13
5.4.260.1630.04319.08
5.4.250.0030.04019.08
5.4.240.0170.03719.21
5.4.230.0200.03318.90
5.4.220.0070.04319.23
5.4.210.0200.03319.21
5.4.200.0200.03319.13
5.4.190.0170.03718.87
5.4.180.0200.03319.15
5.4.170.0270.02719.12
5.4.160.0200.03318.89
5.4.150.0200.04719.11
5.4.140.0230.03316.27
5.4.130.0200.03316.16
5.4.120.0130.03316.32
5.4.110.0030.04016.39
5.4.100.0070.03716.35
5.4.90.0030.03716.40
5.4.80.0000.03716.39
5.4.70.1270.03716.46
5.4.60.1900.03716.32
5.4.50.1230.03016.46
5.4.40.0070.03316.16
5.4.30.0070.03716.27
5.4.20.1300.04316.43
5.4.10.1600.03716.39
5.4.00.1770.03315.81
5.3.290.0000.04714.50
5.3.280.0070.03314.43
5.3.270.0870.04314.54
5.3.260.1830.04014.46
5.3.250.1670.03314.56
5.3.240.0070.03314.58
5.3.230.0000.04014.58
5.3.220.0070.03314.55
5.3.210.1430.03314.61
5.3.200.1470.03314.39
5.3.190.1970.04014.58
5.3.180.2500.02714.41
5.3.170.0400.03714.67
5.3.160.0130.04314.43
5.3.150.0130.03714.42
5.3.140.0300.03714.61
5.3.130.0170.04714.56
5.3.120.0130.03714.56
5.3.110.0170.03314.45
5.3.100.0230.03013.94
5.3.90.0130.03313.98
5.3.80.0100.04014.00
5.3.70.0030.04313.86
5.3.60.0130.03713.86
5.3.50.0130.03713.89
5.3.40.0170.03314.04
5.3.30.0130.03713.73
5.3.20.0270.06313.70
5.3.10.0130.03713.60
5.3.00.0170.03313.49
5.2.170.0100.05010.98
5.2.160.0130.05711.15
5.2.150.0070.03711.23
5.2.140.0200.04011.19
5.2.130.0200.04711.19
5.2.120.0170.03310.96
5.2.110.0130.06011.00
5.2.100.0170.06711.12
5.2.90.0170.03311.11
5.2.80.0230.02711.11
5.2.70.0200.05311.03
5.2.60.0130.04011.05
5.2.50.0200.02310.86
5.2.40.0170.02310.87
5.2.30.0070.04311.04
5.2.20.0170.03711.03
5.2.10.0170.03010.81
5.2.00.0130.02710.64
5.1.60.0100.0239.89
5.1.50.0130.02010.04
5.1.40.0070.0239.85
5.1.30.0070.02710.24
5.1.20.0000.03310.28
5.1.10.0070.02310.00
5.1.00.0030.02710.14
5.0.50.0070.0479.20
5.0.40.0000.0309.20
5.0.30.0070.0409.20
5.0.20.0030.0339.20
5.0.10.0030.0409.20
5.0.00.0030.0309.20
4.4.90.0070.0139.20
4.4.80.0070.0109.20
4.4.70.0030.0209.20
4.4.60.0000.0309.20
4.4.50.0000.0179.20
4.4.40.0000.0309.20
4.4.30.0500.0179.20
4.4.20.0770.0179.20
4.4.10.0770.0209.20
4.4.00.0900.0379.20
4.3.110.0030.0179.20
4.3.100.0000.0209.20
4.3.90.0030.0139.20
4.3.80.0000.0279.20
4.3.70.0030.0339.20
4.3.60.0000.0209.20
4.3.50.0000.0409.20
4.3.40.0000.0439.20
4.3.30.0030.0139.20
4.3.20.0000.0179.20
4.3.10.0000.0179.20
4.3.00.0100.0209.20

preferences:
41.58 ms | 401 KiB | 5 Q