3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 1; $b = array(1, 2, &$a); $array = array(1 => array(&$a, &$b)); var_dump(unserialize(serialize($array)));

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)
8.3.60.0150.00016.62
8.3.50.0090.01121.93
8.3.40.0120.00318.75
8.3.30.0100.00319.09
8.3.20.0070.00020.19
8.3.10.0060.00321.78
8.3.00.0080.00020.68
8.2.180.0040.01516.50
8.2.170.0070.00722.96
8.2.160.0140.00722.13
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0050.00326.16
8.2.120.0070.00022.12
8.2.110.0060.00320.47
8.2.100.0080.00417.91
8.2.90.0000.00819.21
8.2.80.0030.00517.97
8.2.70.0030.00617.49
8.2.60.0080.00017.93
8.2.50.0030.00618.07
8.2.40.0080.00020.01
8.2.30.0070.00018.11
8.2.20.0050.00317.70
8.2.10.0030.00519.52
8.2.00.0000.00717.82
8.1.280.0070.01025.92
8.1.270.0050.00323.87
8.1.260.0040.00426.35
8.1.250.0020.00528.09
8.1.240.0060.00323.80
8.1.230.0080.00317.64
8.1.220.0050.00317.74
8.1.210.0040.00418.77
8.1.200.0000.00917.25
8.1.190.0000.00817.42
8.1.180.0050.00318.10
8.1.170.0050.00318.59
8.1.160.0040.00422.02
8.1.150.0040.00418.70
8.1.140.0000.00817.50
8.1.130.0030.00317.73
8.1.120.0050.00217.43
8.1.110.0050.00317.45
8.1.100.0060.00317.46
8.1.90.0000.00717.50
8.1.80.0000.00717.36
8.1.70.0030.00317.49
8.1.60.0040.00417.63
8.1.50.0080.00017.39
8.1.40.0050.00217.38
8.1.30.0080.00017.58
8.1.20.0040.00417.54
8.1.10.0060.00617.59
8.1.00.0040.00417.47
8.0.300.0060.00318.77
8.0.290.0000.00816.63
8.0.280.0030.00318.41
8.0.270.0000.00717.33
8.0.260.0070.00016.87
8.0.250.0000.00617.04
8.0.240.0030.00417.05
8.0.230.0070.00016.96
8.0.220.0030.00316.87
8.0.210.0000.00816.97
8.0.200.0000.00616.90
8.0.190.0000.00716.93
8.0.180.0000.00817.01
8.0.170.0040.00416.87
8.0.160.0000.00816.91
8.0.150.0000.00816.90
8.0.140.0000.00716.94
8.0.130.0050.00013.32
8.0.120.0080.00016.85
8.0.110.0000.00817.02
8.0.100.0000.00716.83
8.0.90.0000.00716.91
8.0.80.0090.00616.84
8.0.70.0050.00216.77
8.0.60.0000.00716.85
8.0.50.0050.00217.07
8.0.30.0130.00617.13
8.0.20.0100.00817.40
8.0.10.0070.00017.07
8.0.00.0130.02416.77
7.4.330.0020.00215.20
7.4.320.0030.00316.50
7.4.300.0030.00316.50
7.4.290.0000.00716.50
7.4.280.0050.00216.59
7.4.270.0040.00416.50
7.4.260.0080.00016.58
7.4.250.0000.00716.46
7.4.240.0020.00616.44
7.4.230.0040.00416.40
7.4.220.0060.01216.63
7.4.210.0040.01016.53
7.4.200.0040.00416.41
7.4.190.0040.00416.51
7.4.160.0060.00916.61
7.4.150.0110.00617.40
7.4.140.0060.01117.86
7.4.130.0080.00816.45
7.4.120.0110.00716.52
7.4.110.0030.01416.70
7.4.100.0070.01316.71
7.4.90.0180.00016.45
7.4.80.0100.01116.54
7.4.70.0070.01116.58
7.4.60.0040.01216.50
7.4.50.0030.00516.63
7.4.40.0030.01322.77
7.4.30.0050.01016.41
7.4.00.0040.00814.91
7.3.330.0000.00513.07
7.3.320.0050.00013.12
7.3.310.0040.00416.12
7.3.300.0000.00716.17
7.3.290.0090.00916.20
7.3.280.0080.01016.28
7.3.270.0090.00917.40
7.3.260.0080.00816.38
7.3.250.0080.01016.42
7.3.240.0140.00416.38
7.3.230.0120.01316.43
7.3.210.0080.00916.58
7.3.200.0140.00819.39
7.3.190.0090.00916.46
7.3.180.0060.01016.45
7.3.170.0150.00316.45
7.3.160.0110.01116.48
7.3.120.0100.00614.85
7.2.330.0150.00316.29
7.2.320.0120.00616.74
7.2.310.0090.01316.56
7.2.300.0130.00316.36
7.2.290.0150.00316.23
7.2.00.0000.01319.29
7.1.100.0030.00917.83
7.1.70.0070.01017.21
7.1.60.0030.01719.27
7.1.50.0260.01034.48
7.1.00.0030.07722.48
7.0.200.0080.00016.59
7.0.140.0070.07022.15
7.0.80.0270.03019.84
7.0.70.0330.06019.91
7.0.60.0270.04019.96
7.0.50.0500.06020.28
7.0.40.0100.05720.20
7.0.30.0130.08020.11
7.0.20.0030.04320.09
7.0.10.0130.04020.07
7.0.00.0030.06320.13
5.6.230.0130.05020.54
5.6.220.0030.04020.66
5.6.210.0000.04320.76
5.6.200.0200.08021.11
5.6.190.0030.06321.02
5.6.180.0030.08320.93
5.6.170.0030.05720.96
5.6.160.0100.07720.95
5.6.150.0070.05721.04
5.6.140.0130.04320.95
5.6.130.0170.06320.92
5.6.120.0100.07721.16
5.6.110.0100.04721.07
5.6.100.0070.04321.08
5.6.90.0100.07721.01
5.6.80.0070.04020.39
5.6.70.0100.04720.36
5.6.60.0070.07720.32
5.6.50.0100.06020.50
5.6.40.0100.07320.43
5.6.30.0230.05020.29
5.6.20.0030.08720.43
5.6.10.0200.06320.45
5.6.00.0170.07320.29
5.5.370.0070.03720.36
5.5.360.0070.04020.43
5.5.350.0070.06320.43
5.5.340.0130.06320.90
5.5.330.0070.08020.92
5.5.320.0070.06720.75
5.5.310.0030.06320.82
5.5.300.0170.06720.63
5.5.290.0070.05720.92
5.5.280.0100.08020.79
5.5.270.0130.07720.87
5.5.260.0170.08020.78
5.5.250.0000.08720.71
5.5.240.0170.06720.30
5.5.230.0030.08320.14
5.5.220.0100.07720.28
5.5.210.0030.07020.29
5.5.200.0100.07320.07
5.5.190.0030.08020.13
5.5.180.0130.08020.18
5.5.160.0070.06720.18
5.5.150.0070.04720.25
5.5.140.0100.04320.07
5.5.130.0100.06720.20
5.5.120.0070.06720.22
5.5.110.0070.04320.16
5.5.100.0000.08720.06
5.5.90.0100.07319.93
5.5.80.0100.07020.06
5.5.70.0030.08020.09
5.5.60.0030.04019.95
5.5.50.0100.04020.15
5.5.40.0000.08320.09
5.5.30.0070.08020.07
5.5.20.0170.06720.02
5.5.10.0070.08020.12
5.5.00.0070.05720.02
5.4.450.0100.05319.45
5.4.440.0030.05019.43
5.4.430.0030.04319.22
5.4.420.0070.04319.10
5.4.410.0070.06719.27
5.4.400.0000.05019.22
5.4.390.0100.08019.04
5.4.380.0030.08019.03
5.4.370.0170.07019.07
5.4.360.0130.06319.04
5.4.350.0100.07319.23
5.4.340.0030.05319.12
5.4.320.0030.04718.78
5.4.310.0130.06719.05
5.4.300.0130.03018.90
5.4.290.0130.06718.96
5.4.280.0200.06319.02
5.4.270.0070.04719.12
5.4.260.0230.03018.94
5.4.250.0170.06319.12
5.4.240.0030.07719.02
5.4.230.0070.07318.95
5.4.220.0070.04719.11
5.4.210.0130.03319.04
5.4.200.0100.04319.13
5.4.190.0100.07318.90
5.4.180.0030.05019.05
5.4.170.0100.06719.11
5.4.160.0070.07019.05
5.4.150.0100.04719.18
5.4.140.0070.04716.28
5.4.130.0100.05716.32
5.4.120.0070.07716.12
5.4.110.0030.04016.42
5.4.100.0070.03316.38
5.4.90.0100.07016.20
5.4.80.0100.07016.32
5.4.70.0070.07016.32
5.4.60.0130.07016.29
5.4.50.0100.06016.31
5.4.40.0070.03316.26
5.4.30.0070.07316.37
5.4.20.0030.07316.39
5.4.10.0070.06316.47
5.4.00.0100.07315.68
5.3.290.0000.05314.61
5.3.280.0070.07714.59
5.3.270.0030.05714.59
5.3.260.0270.06314.46
5.3.250.0100.07014.47
5.3.240.0030.07714.57
5.3.230.0100.07014.54
5.3.220.0030.07714.39
5.3.210.0030.04714.56
5.3.200.0070.04314.50
5.3.190.0100.07314.55
5.3.180.0100.07314.39
5.3.170.0130.07314.55
5.3.160.0070.07014.38
5.3.150.0100.07014.43
5.3.140.0070.07714.50
5.3.130.0100.07714.54
5.3.120.0070.07014.53
5.3.110.0130.03714.54
5.3.100.0000.08313.91
5.3.90.0070.07013.83
5.3.80.0000.07313.95
5.3.70.0170.07013.84
5.3.60.0130.06713.86
5.3.50.0030.05313.94
5.3.40.0030.08013.94
5.3.30.0000.07713.68
5.3.20.0000.04713.46
5.3.10.0100.06713.66
5.3.00.0070.07013.61
5.2.170.0030.06311.63
5.2.160.0000.07011.63
5.2.150.0070.06011.63
5.2.140.0100.05711.63
5.2.130.0030.03311.63
5.2.120.0070.05011.63
5.2.110.0170.05311.63
5.2.100.0070.05711.63
5.2.90.0100.05011.63
5.2.80.0030.04011.63
5.2.70.0130.05711.63
5.2.60.0070.03311.63
5.2.50.0100.05711.63
5.2.40.0100.05011.63
5.2.30.0070.05711.63
5.2.20.0000.04011.63
5.2.10.0030.03711.63
5.2.00.0000.03311.63
5.1.60.0030.04311.63
5.1.50.0030.03711.63
5.1.40.0100.04711.63
5.1.30.0030.03311.63
5.1.20.0030.05311.63
5.1.10.0100.03311.63
5.1.00.0070.03011.63
5.0.50.0030.02711.63
5.0.40.0000.05011.63
5.0.30.0030.04311.63
5.0.20.0030.04311.63
5.0.10.0030.04011.63
5.0.00.0070.03011.63
4.4.90.0000.02711.63
4.4.80.0000.02011.63
4.4.70.0000.02011.63
4.4.60.0000.01711.63
4.4.50.0000.02011.63
4.4.40.0100.05011.63
4.4.30.0030.03311.63
4.4.20.0000.03711.63
4.4.10.0000.02011.63
4.4.00.0000.05711.63
4.3.110.0000.03711.63
4.3.100.0000.03311.63
4.3.90.0000.02311.63
4.3.80.0030.05011.63
4.3.70.0070.02711.63
4.3.60.0100.02711.63
4.3.50.0030.03311.63
4.3.40.0000.05311.63
4.3.30.0000.03711.63
4.3.20.0030.02711.63
4.3.10.0000.04011.63
4.3.00.0000.03311.63

preferences:
44.26 ms | 401 KiB | 5 Q