3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = [1,2,3]; $arr2 = $arr1; debug_zval_dump('arr2'); key($arr2); debug_zval_dump('arr2'); unset($arr1); unset($arr2); $arr1 = [1,2,3]; $arr2 = $arr1; debug_zval_dump('arr2'); key($arr2); debug_zval_dump('arr2');

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)
8.3.60.0130.00316.38
8.3.50.0130.01021.92
8.3.40.0150.00018.62
8.3.30.0120.00318.36
8.3.20.0070.00020.13
8.3.10.0050.00323.53
8.3.00.0080.00017.38
8.2.180.0110.00816.75
8.2.170.0100.00722.96
8.2.160.0100.00720.39
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0070.00317.50
8.2.110.0050.00521.06
8.2.100.0070.00418.09
8.2.90.0040.00419.05
8.2.80.0090.00017.97
8.2.70.0000.00817.63
8.2.60.0040.00417.91
8.2.50.0000.00818.10
8.2.40.0000.00820.42
8.2.30.0040.00420.62
8.2.20.0000.00817.61
8.2.10.0070.00018.05
8.2.00.0070.00018.05
8.1.280.0100.01025.92
8.1.270.0080.00023.96
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0070.00321.30
8.1.230.0080.00319.55
8.1.220.0040.00417.74
8.1.210.0080.00018.77
8.1.200.0060.00317.00
8.1.190.0100.00019.01
8.1.180.0030.00518.10
8.1.170.0050.00318.50
8.1.160.0040.00421.94
8.1.150.0040.00418.83
8.1.140.0040.00419.44
8.1.130.0000.00717.54
8.1.120.0000.00717.31
8.1.110.0000.00717.38
8.1.100.0050.00217.35
8.1.90.0000.00717.34
8.1.80.0040.00417.27
8.1.70.0030.00317.39
8.1.60.0000.00717.53
8.1.50.0000.00917.41
8.1.40.0080.00017.43
8.1.30.0070.00317.41
8.1.20.0040.00417.61
8.1.10.0000.00817.51
8.1.00.0000.00717.30
8.0.300.0000.00718.77
8.0.290.0080.00016.75
8.0.280.0030.00318.42
8.0.270.0030.00317.14
8.0.260.0030.00317.09
8.0.250.0040.00416.81
8.0.240.0000.00816.84
8.0.230.0030.00316.84
8.0.220.0000.00816.83
8.0.210.0030.00516.82
8.0.200.0030.00316.84
8.0.190.0080.00016.86
8.0.180.0040.00416.91
8.0.170.0080.00016.70
8.0.160.0050.00316.68
8.0.150.0080.00016.76
8.0.140.0000.00716.82
8.0.130.0000.00513.20
8.0.120.0080.00016.81
8.0.110.0040.00416.72
8.0.100.0070.00016.86
8.0.90.0040.00416.86
8.0.80.0090.00616.77
8.0.70.0080.00016.78
8.0.60.0050.00316.79
8.0.50.0080.00016.80
8.0.30.0110.00716.89
8.0.20.0110.00917.40
8.0.10.0000.00716.96
8.0.00.0110.00916.74
7.4.330.0050.00015.08
7.4.320.0050.00216.45
7.4.300.0000.00616.48
7.4.290.0030.00316.53
7.4.280.0040.00416.42
7.4.270.0040.00416.52
7.4.260.0040.00416.45
7.4.250.0000.00716.50
7.4.240.0000.00816.46
7.4.230.0070.00016.64
7.4.220.0110.00916.64
7.4.210.0090.00716.54
7.4.200.0000.00716.53
7.4.160.0120.00416.31
7.4.150.0090.00917.40
7.4.140.0080.01217.86
7.4.130.0060.01116.41
7.4.120.0080.00816.22
7.4.110.0070.01516.47
7.4.100.0100.01416.39
7.4.90.0140.00316.49
7.4.80.0080.01419.39
7.4.70.0040.01316.49
7.4.60.0060.00916.39
7.4.50.0030.00616.57
7.4.40.0070.01016.43
7.4.30.0160.00016.45
7.4.00.0100.00614.97
7.3.330.0000.00513.04
7.3.320.0000.00613.08
7.3.310.0030.00316.26
7.3.300.0070.00016.23
7.3.290.0040.00416.16
7.3.280.0130.00516.21
7.3.270.0220.00017.40
7.3.260.0090.00916.40
7.3.250.0120.00616.32
7.3.240.0090.01116.31
7.3.230.0100.01016.42
7.3.210.0060.01016.24
7.3.200.0090.00916.52
7.3.190.0090.00916.15
7.3.180.0110.00516.54
7.3.170.0080.00816.27
7.3.160.0000.01516.17
7.3.10.0030.01016.60
7.3.00.0090.00316.70
7.2.330.0090.01516.46
7.2.320.0130.00316.34
7.2.310.0110.00716.21
7.2.300.0090.01216.22
7.2.290.0130.01016.59
7.2.130.0060.00616.71
7.2.120.0110.00016.68
7.2.110.0030.00616.49
7.2.100.0060.00316.81
7.2.90.0100.00316.45
7.2.80.0090.00316.85
7.2.70.0070.00416.83
7.2.60.0040.01216.63
7.2.50.0090.00616.64
7.2.40.0070.00316.83
7.2.30.0100.00616.78
7.2.20.0120.00016.69
7.2.10.0110.00316.72
7.2.00.0100.00417.95
7.1.250.0030.00715.82
7.1.200.0040.01115.82
7.1.100.0060.00817.93
7.1.70.0000.00917.14
7.1.60.0150.00919.43
7.1.50.0030.01716.77
7.1.00.0070.07022.31
7.0.200.0420.00314.58
7.0.60.0070.08019.81
7.0.50.0070.08017.80
7.0.40.0070.04320.08
7.0.30.0200.04020.20
7.0.20.0300.04020.02
7.0.10.0030.04320.13
7.0.00.0000.08720.16
5.6.280.0070.07021.13
5.6.210.0070.04020.54
5.6.200.0170.07018.09
5.6.190.0030.08320.63
5.6.180.0100.08320.41
5.6.170.0370.07320.50
5.6.160.0030.04020.40
5.6.150.0070.06718.11
5.6.140.0000.07018.18
5.6.130.0070.04718.21
5.6.120.0170.07320.89
5.6.110.0000.04320.96
5.6.100.0030.05321.11
5.6.90.0000.04320.99
5.6.80.0000.04320.50
5.5.350.3300.03720.32
5.5.340.0100.07717.88
5.5.330.0030.05020.56
5.5.320.0270.07320.41
5.5.310.0230.07020.28
5.5.300.0030.04717.98
5.5.290.0030.05018.02
5.5.280.0030.04020.76
5.5.270.0130.07020.79
5.5.260.0100.07720.75
5.5.250.0100.07720.46
5.5.240.0000.08320.15
5.4.450.0200.05319.54
5.4.440.0200.05319.56
5.4.430.0100.06019.59
5.4.420.0070.06019.26
5.4.410.0200.05019.11
5.4.400.0170.05719.24
5.4.390.0200.05019.22
5.4.380.0130.06319.09
5.4.370.0130.05718.99
5.4.360.0370.04019.23
5.4.350.0170.05019.07
5.4.340.0270.04318.99
5.4.320.0170.05319.31
5.4.310.0100.05719.27
5.4.300.0070.06018.94
5.4.290.0070.07719.11
5.4.280.0170.06719.13
5.4.270.0170.06319.29
5.4.260.0200.06019.20
5.4.250.0100.05718.90
5.4.240.0230.05319.29
5.4.230.0130.05718.92
5.4.220.0200.05018.98
5.4.210.0130.05319.17
5.4.200.0170.05019.15
5.4.190.0170.05319.14
5.4.180.0270.04718.98
5.4.170.0070.06018.94
5.4.160.0200.05019.21
5.4.150.0270.04718.89
5.4.140.0130.05316.18
5.4.130.0130.05316.50
5.4.120.0100.05016.25
5.4.110.0170.05016.50
5.4.100.0170.05016.48
5.4.90.0300.04316.51
5.4.80.0130.04716.44
5.4.70.0230.03716.04
5.4.60.0170.05716.46
5.4.50.0200.05316.43
5.4.40.0200.05016.26
5.4.30.0130.04716.19
5.4.20.0300.03316.04
5.4.10.0130.05016.57
5.4.00.0170.04315.78

preferences:
58.53 ms | 401 KiB | 5 Q