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)
8.3.60.0070.00716.50
8.3.50.0100.01221.11
8.3.40.0120.00318.79
8.3.30.0130.00618.85
8.3.20.0070.00020.25
8.3.10.0080.00021.73
8.3.00.0070.00023.64
8.2.180.0030.01218.54
8.2.170.0040.01122.96
8.2.160.0070.00720.35
8.2.150.0080.00024.18
8.2.140.0090.00024.66
8.2.130.0030.00619.77
8.2.120.0080.00026.35
8.2.110.0060.00320.38
8.2.100.0100.00318.05
8.2.90.0080.00019.35
8.2.80.0000.00817.97
8.2.70.0030.00617.62
8.2.60.0040.00418.16
8.2.50.0000.00818.07
8.2.40.0000.00822.37
8.2.30.0050.00319.50
8.2.20.0080.00017.78
8.2.10.0040.00418.17
8.2.00.0050.00217.98
8.1.280.0170.00325.92
8.1.270.0030.00620.52
8.1.260.0050.00228.09
8.1.250.0080.00028.09
8.1.240.0030.00621.03
8.1.230.0070.00419.21
8.1.220.0040.00417.79
8.1.210.0000.00918.77
8.1.200.0060.00317.23
8.1.190.0040.00417.25
8.1.180.0040.00718.10
8.1.170.0040.00418.52
8.1.160.0070.00020.88
8.1.150.0040.00418.85
8.1.140.0030.00519.58
8.1.130.0000.00717.69
8.1.120.0000.00717.49
8.1.110.0030.00517.48
8.1.100.0040.00417.45
8.1.90.0040.00417.49
8.1.80.0000.00717.38
8.1.70.0040.00417.45
8.1.60.0030.00617.56
8.1.50.0050.00317.54
8.1.40.0040.00417.57
8.1.30.0050.00317.59
8.1.20.0080.00017.54
8.1.10.0030.00517.57
8.1.00.0040.00417.50
8.0.300.0070.00018.77
8.0.290.0000.00716.63
8.0.280.0040.00418.43
8.0.270.0030.00317.16
8.0.260.0030.00317.25
8.0.250.0030.00317.00
8.0.240.0030.00316.94
8.0.230.0040.00416.99
8.0.220.0070.00016.88
8.0.210.0030.00316.91
8.0.200.0090.00016.86
8.0.190.0040.00416.96
8.0.180.0060.00316.92
8.0.170.0080.00016.92
8.0.160.0030.00516.89
8.0.150.0000.00716.89
8.0.140.0040.00416.73
8.0.130.0000.00513.33
8.0.120.0060.00316.77
8.0.110.0040.00416.76
8.0.100.0000.00716.79
8.0.90.0040.00316.82
8.0.80.0060.01616.80
8.0.70.0070.00016.84
8.0.60.0040.00416.80
8.0.50.0030.00316.83
8.0.30.0100.01016.99
8.0.20.0090.01117.40
8.0.10.0050.00216.85
8.0.00.0130.00716.88
7.4.330.0050.00016.77
7.4.320.0000.00716.50
7.4.300.0070.00016.56
7.4.290.0060.00016.55
7.4.280.0030.00616.41
7.4.270.0000.00716.43
7.4.260.0030.00316.41
7.4.250.0000.00716.42
7.4.240.0050.00216.56
7.4.230.0040.00416.54
7.4.220.0110.00716.63
7.4.210.0160.00316.69
7.4.200.0030.00316.70
7.4.160.0060.00916.57
7.4.150.0150.00317.40
7.4.140.0090.01117.86
7.4.130.0100.01316.76
7.4.120.0110.01116.56
7.4.110.0030.01416.46
7.4.100.0110.00816.63
7.4.90.0140.00816.33
7.4.80.0080.01219.39
7.4.70.0090.00916.45
7.4.60.0030.01416.54
7.4.50.0040.01116.25
7.4.40.0130.00716.41
7.4.30.0120.00916.45
7.4.10.0150.00314.95
7.4.00.0110.00615.00
7.3.330.0030.00313.32
7.3.320.0030.00313.38
7.3.310.0030.00316.25
7.3.300.0000.00716.16
7.3.290.0120.00616.34
7.3.280.0110.00816.37
7.3.270.0110.00817.40
7.3.260.0060.01516.70
7.3.240.0090.00916.37
7.3.230.0100.00716.41
7.3.210.0060.01216.36
7.3.200.0070.01519.39
7.3.190.0070.01216.30
7.3.180.0030.01316.28
7.3.170.0130.00316.37
7.3.160.0000.02216.31
7.3.130.0070.01014.68
7.3.120.0090.00814.86
7.3.110.0070.00914.86
7.3.100.0060.00714.92
7.3.90.0060.00814.74
7.3.80.0060.00715.13
7.3.70.0060.00714.77
7.3.60.0050.00914.80
7.3.50.0020.01114.71
7.3.40.0040.00814.69
7.3.30.0090.00714.63
7.3.20.0080.01016.75
7.3.10.0040.01216.71
7.3.00.0050.00916.58
7.2.330.0090.01116.75
7.2.320.0110.00716.80
7.2.310.0070.01616.73
7.2.300.0090.00916.63
7.2.290.0130.01016.65
7.2.260.0150.00415.00
7.2.250.0070.01015.29
7.2.240.0050.01015.10
7.2.230.0050.00915.08
7.2.220.0070.00515.00
7.2.210.0080.00615.05
7.2.200.0060.00715.17
7.2.190.0040.01115.05
7.2.180.0090.00514.95
7.2.170.0060.00914.97
7.2.160.0060.01014.93
7.2.150.0100.00717.04
7.2.140.0070.01416.88
7.2.130.0080.00516.95
7.2.120.0060.00916.85
7.2.110.0050.01116.76
7.2.100.0030.01016.87
7.2.90.0070.00616.98
7.2.80.0040.00916.98
7.2.70.0020.00917.00
7.2.60.0070.00616.97
7.2.50.0030.01117.01
7.2.40.0010.01316.87
7.2.30.0080.00716.92
7.2.20.0070.00816.99
7.2.10.0060.00916.93
7.2.00.0080.00717.59
7.1.330.0050.01015.87
7.1.320.0090.00515.84
7.1.310.0080.00415.77
7.1.300.0060.00815.84
7.1.290.0050.00715.79
7.1.280.0100.00715.91
7.1.270.0030.01115.69
7.1.260.0060.00715.84
7.1.250.0060.00815.71
7.1.240.0090.00615.80
7.1.230.0030.00715.78
7.1.220.0070.00715.60
7.1.210.0070.00715.93
7.1.200.0050.00715.78
7.1.190.0000.01215.50
7.1.180.0000.01115.86
7.1.170.0030.00715.95
7.1.160.0070.00315.91
7.1.150.0090.00615.81
7.1.140.0120.00015.60
7.1.130.0040.00815.75
7.1.120.0040.00415.71
7.1.110.0030.00615.71
7.1.100.0070.00616.92
7.1.90.0080.00415.63
7.1.80.0090.00615.89
7.1.70.0050.00716.56
7.1.60.0130.00517.49
7.1.50.0060.00316.25
7.1.40.0040.01215.77
7.1.30.0060.00615.45
7.1.20.0000.01415.73
7.1.10.0080.00515.61
7.1.00.0020.04518.98
7.0.330.0030.00715.44
7.0.320.0040.00815.37
7.0.310.0070.00715.57
7.0.300.0060.00615.47
7.0.290.0040.01115.53
7.0.280.0030.01015.59
7.0.270.0030.00615.61
7.0.260.0040.00815.45
7.0.250.0070.00715.28
7.0.240.0040.01115.34
7.0.230.0030.01015.34
7.0.220.0100.00315.41
7.0.210.0070.00415.25
7.0.200.0030.00916.08
7.0.190.0000.01415.20
7.0.180.0090.00615.42
7.0.170.0100.00615.42
7.0.160.0000.00915.55
7.0.150.0060.00815.50
7.0.140.0000.01415.48
7.0.130.0060.00315.29
7.0.120.0040.00815.00
7.0.110.0070.00715.51
7.0.100.0060.00915.31
7.0.90.0130.03817.63
7.0.80.0320.02717.77
7.0.70.0090.04017.79
7.0.60.0180.04217.85
7.0.50.0050.02717.92
7.0.40.0100.03816.74
7.0.30.0050.02816.88
7.0.20.0080.03916.70
7.0.10.0060.04116.80
7.0.00.0050.03916.84
5.6.400.0070.00714.41
5.6.390.0080.00814.71
5.6.380.0100.00414.70
5.6.370.0060.01014.49
5.6.360.0000.00814.42
5.6.350.0060.00614.75
5.6.340.0030.01314.54
5.6.330.0080.00414.45
5.6.320.0070.00714.04
5.6.310.0030.01014.57
5.6.300.0080.00814.33
5.6.290.0070.00714.45
5.6.280.0050.03217.45
5.6.270.0100.00614.23
5.6.260.0090.00614.52
5.6.250.0090.00314.40
5.6.240.0080.04317.31
5.6.230.0020.03317.46
5.6.220.0050.02517.47
5.6.210.0030.03617.52
5.6.200.0120.03917.82
5.6.190.0060.04717.75
5.6.180.0050.04317.82
5.6.170.0070.04417.62
5.6.160.0080.03917.70
5.6.150.0090.02317.80
5.6.140.0050.04517.65
5.6.130.0140.03817.68
5.6.120.0070.04217.75
5.6.110.0090.02317.63
5.6.100.0050.02817.67
5.6.90.0020.04617.81
5.6.80.0030.03317.38
5.6.70.0070.02217.21
5.6.60.0080.02817.26
5.6.50.0100.04017.46
5.6.40.0020.03717.29
5.6.30.0050.02917.35
5.6.20.0040.02217.43
5.6.10.0120.02017.41
5.6.00.0040.02717.20
5.5.380.0080.03817.38
5.5.370.0090.03517.30
5.5.360.0030.04317.15
5.5.350.0100.03717.43
5.5.340.0050.03817.71
5.5.330.0050.03617.55
5.5.320.0020.02917.66
5.5.310.0070.04317.56
5.5.300.0070.04217.69
5.5.290.0090.04917.49
5.5.280.0050.04217.54
5.5.270.0000.05417.59
5.5.260.0110.02717.63
5.5.250.0110.04017.56
5.5.240.0090.03817.22
5.5.230.0000.04717.02
5.5.220.0050.02717.01
5.5.210.0050.03417.25
5.5.200.0070.04217.27
5.5.190.0070.02917.17
5.5.180.0070.02317.33
5.5.170.0060.01514.15
5.5.160.0070.02417.21
5.5.150.0080.02217.04
5.5.140.0050.02417.08
5.5.130.0020.03017.26
5.5.120.0150.01317.19
5.5.110.0090.02017.15
5.5.100.0070.02217.17
5.5.90.0020.02717.12
5.5.80.0070.02017.04
5.5.70.0050.04317.25
5.5.60.0040.02417.25
5.5.50.0060.02117.17
5.5.40.0020.02517.16
5.5.30.0080.01817.13
5.5.20.0020.02717.18
5.5.10.0040.02517.04
5.5.00.0030.02517.14

preferences:
51.61 ms | 401 KiB | 5 Q