3v4l.org

run code in 300+ PHP versions simultaneously
<?php function func(&$data) { foreach ($data as $key => $value) { if (is_array($value)) { func($data[$key]); } } } $data = [ ['k' => [0]], ['k' => [1]], ]; //debug_zval_dump($data[1]['k']); //refcount(2) func($data); //debug_zval_dump($data[1]['k']); //refcount(3) array_replace_recursive($data[0], $data[1]); echo json_encode($data);

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)
8.3.40.0120.00318.90
8.3.30.0110.00718.79
8.3.20.0030.00520.13
8.3.10.0050.00221.78
8.3.00.0050.00323.66
8.2.170.0040.01122.96
8.2.160.0160.00320.39
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0060.00319.62
8.2.120.0030.00526.35
8.2.110.0070.00421.02
8.2.100.0110.00017.78
8.2.90.0040.00419.40
8.2.80.0060.00317.97
8.2.70.0000.00917.63
8.2.60.0000.00818.05
8.2.50.0030.00518.07
8.2.40.0040.00422.35
8.2.30.0000.00719.49
8.2.20.0000.00817.66
8.2.10.0050.00518.19
8.2.00.0040.00418.05
8.1.270.0110.00423.91
8.1.260.0000.00828.09
8.1.250.0040.00428.09
8.1.240.0060.00322.74
8.1.230.0120.00017.52
8.1.220.0060.00317.74
8.1.210.0030.00618.77
8.1.200.0000.00817.35
8.1.190.0050.00317.22
8.1.180.0040.00418.10
8.1.170.0090.00018.66
8.1.160.0000.00720.82
8.1.150.0000.00718.84
8.1.140.0080.00019.58
8.1.130.0030.00317.74
8.1.120.0040.00417.45
8.1.110.0000.00717.33
8.1.100.0080.00017.38
8.1.90.0090.00017.36
8.1.80.0000.00817.44
8.1.70.0040.00417.42
8.1.60.0040.00417.46
8.1.50.0080.00017.46
8.1.40.0080.00017.41
8.1.30.0040.00417.54
8.1.20.0040.00417.51
8.1.10.0040.00417.57
8.1.00.0080.00017.54
8.0.300.0030.00618.77
8.0.290.0040.00416.75
8.0.280.0030.00318.31
8.0.270.0000.00717.17
8.0.260.0000.00617.16
8.0.250.0060.00316.92
8.0.240.0030.00316.78
8.0.230.0000.00616.99
8.0.220.0080.00016.84
8.0.210.0000.00716.77
8.0.200.0040.00416.84
8.0.190.0080.00016.95
8.0.180.0070.00316.93
8.0.170.0000.00816.89
8.0.160.0050.00216.91
8.0.150.0030.00416.80
8.0.140.0040.00416.80
8.0.130.0050.00013.32
8.0.120.0040.00416.89
8.0.110.0020.00516.88
8.0.100.0000.00716.82
8.0.90.0070.00016.78
8.0.80.0070.01016.88
8.0.70.0000.00716.76
8.0.60.0070.00016.86
8.0.50.0040.00316.78
8.0.30.0050.01416.98
8.0.20.0090.01017.40
8.0.10.0000.00816.89
8.0.00.0100.01016.56
7.4.330.0050.00016.70
7.4.320.0030.00316.49
7.4.300.0080.00016.51
7.4.290.0000.00716.55
7.4.280.0060.00316.43
7.4.270.0070.00016.42
7.4.260.0030.00316.60
7.4.250.0000.00716.46
7.4.240.0060.00216.54
7.4.230.0070.00016.60
7.4.220.0140.00416.54
7.4.210.0120.00616.58
7.4.200.0000.00716.62
7.4.160.0080.00816.26
7.4.150.0100.00717.40
7.4.140.0140.00517.86
7.4.130.0170.00316.54
7.4.120.0080.01116.56
7.4.110.0040.01916.61
7.4.100.0090.01316.36
7.4.90.0090.00916.37
7.4.80.0180.00319.39
7.4.70.0090.00616.48
7.4.60.0070.01016.39
7.4.50.0030.01316.43
7.4.40.0150.00916.34
7.4.30.0110.00916.40
7.4.00.0030.01015.12
7.3.330.0050.00013.22
7.3.320.0030.00313.36
7.3.310.0030.00316.34
7.3.300.0080.00016.35
7.3.290.0090.00816.39
7.3.280.0060.00916.37
7.3.270.0170.00717.40
7.3.260.0150.00316.29
7.3.240.0130.00316.47
7.3.230.0100.00616.44
7.3.210.0070.01016.55
7.3.200.0090.00919.39
7.3.190.0080.00816.54
7.3.180.0060.01016.30
7.3.170.0030.01316.44
7.3.160.0130.00916.31
7.2.330.0100.01016.90
7.2.320.0060.01016.76
7.2.310.0060.01216.74
7.2.300.0060.01216.58
7.2.290.0040.01316.60
7.2.60.0080.00816.84
7.2.00.0000.01219.53
7.1.200.0040.01115.54
7.1.100.0060.00618.08
7.1.70.0000.01117.25
7.1.60.0130.00619.18
7.1.50.0050.00517.03
7.1.00.0130.06722.45
7.0.200.0060.00316.85
7.0.90.0530.08319.95
7.0.80.0100.04719.84
7.0.70.0070.07719.88
7.0.60.0000.08019.95
7.0.50.0170.07320.21
7.0.40.0030.08720.09
7.0.30.0030.08720.15
7.0.20.0170.04020.13
7.0.10.0100.06020.02
7.0.00.0030.08319.99
5.6.280.0070.04321.10
5.6.240.0030.09020.63
5.6.230.0070.05320.63
5.6.220.0200.07320.63
5.6.210.0070.06720.51
5.6.200.0330.02721.05
5.6.190.0130.06320.97
5.6.180.0070.08321.04
5.6.170.0070.04721.14
5.6.160.0030.08321.04
5.6.150.0130.07721.11
5.6.140.0170.07721.08
5.6.130.0130.06720.95
5.6.120.0100.08720.95
5.6.110.0100.07721.07
5.6.100.0100.05021.10
5.6.90.0100.07721.02
5.6.80.0170.07720.49
5.6.70.0070.07720.50
5.6.60.0100.07720.46
5.6.50.0030.08320.46
5.6.40.0100.07320.42
5.6.30.0100.07020.45
5.6.20.0100.07020.36
5.6.10.0100.06720.37
5.6.00.0170.07020.45
5.5.380.0030.08720.30
5.5.370.0070.07720.30
5.5.360.0070.08320.40
5.5.350.0130.07720.35
5.5.340.0130.07720.91
5.5.330.0200.06020.87
5.5.320.0030.06020.73
5.5.310.0070.08720.83
5.5.300.0130.07020.88
5.5.290.0100.08020.89
5.5.280.0070.08320.77
5.5.270.0070.07320.68
5.5.260.0130.06720.86
5.5.250.0100.08020.71
5.5.240.0070.06720.29
5.5.230.0100.07720.18
5.5.220.0130.04720.29
5.5.210.0100.07720.01
5.5.200.0070.06020.24
5.5.190.0030.08320.29
5.5.180.0130.05720.18
5.5.160.0130.07320.26
5.5.150.0000.05320.25
5.5.140.0030.07020.22
5.5.130.0130.05320.24
5.5.120.0070.08020.15
5.5.110.0030.05020.23
5.5.100.0100.07019.98
5.5.90.0030.06020.07
5.5.80.0130.04020.06
5.5.70.0070.04320.07
5.5.60.0070.03720.09
5.5.50.0100.03020.03
5.5.40.0130.05320.06
5.5.30.0100.03320.14
5.5.20.0100.03319.93
5.5.10.0000.04720.00
5.5.00.0130.04320.02

preferences:
40.76 ms | 400 KiB | 5 Q