3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = [[["AAA", "BBB"]], [["CCC"]]]; function flatten($arr) { return array_merge(...$arr); } $arr = flatten(flatten($arr)); print_r($arr);

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)
8.4.120.0020.00620.81
8.4.110.0100.01118.88
8.4.100.0070.01017.55
8.4.90.0060.00217.50
8.4.80.0090.00817.44
8.4.70.0100.00718.10
8.4.60.0130.00718.90
8.4.50.0120.00918.44
8.4.40.0100.01019.35
8.4.30.0030.01719.32
8.4.20.0060.00618.74
8.4.10.0100.01022.37
8.3.250.0080.01018.85
8.3.240.0080.00616.49
8.3.230.0110.00816.45
8.3.220.0110.00618.37
8.3.210.0040.00416.39
8.3.200.0050.00316.50
8.3.190.0090.00616.96
8.3.180.0090.00916.98
8.3.170.0070.00318.95
8.3.160.0160.00316.64
8.3.150.0070.01117.21
8.3.140.0100.01016.56
8.3.130.0080.00016.77
8.3.120.0160.00018.65
8.3.110.0000.01120.94
8.3.100.0050.00524.06
8.3.90.0130.00726.77
8.3.80.0060.00318.43
8.3.70.0090.00916.25
8.3.60.0130.00918.43
8.3.50.0050.01117.24
8.3.40.0080.00818.84
8.3.30.0060.00918.44
8.3.20.0050.00221.72
8.3.10.0040.00421.60
8.3.00.0030.00621.78
8.2.290.0110.00718.96
8.2.280.0140.00618.05
8.2.270.0110.00717.05
8.2.260.0080.00017.14
8.2.250.0050.00318.20
8.2.240.0080.00017.17
8.2.230.0000.01522.58
8.2.220.0050.00337.54
8.2.210.0050.00326.77
8.2.200.0100.00016.38
8.2.190.0090.00618.41
8.2.180.0120.00316.38
8.2.170.0080.00622.96
8.2.160.0070.00720.47
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0060.00319.23
8.2.110.0060.00320.31
8.2.100.0090.00317.66
8.2.90.0080.00019.64
8.2.80.0080.00017.97
8.2.70.0040.00417.50
8.2.60.0000.00817.93
8.2.50.0030.00518.07
8.2.40.0030.00518.19
8.2.30.0040.00417.90
8.2.20.0000.00717.86
8.2.10.0030.00519.29
8.2.00.0040.00418.05
8.1.330.0070.00816.67
8.1.320.0040.00615.79
8.1.310.0100.00716.87
8.1.300.0090.00018.41
8.1.290.0080.00030.84
8.1.280.0090.00625.92
8.1.270.0000.00720.28
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0070.00323.77
8.1.230.0060.00623.98
8.1.220.0000.00717.79
8.1.210.0030.00518.82
8.1.200.0030.00717.25
8.1.190.0040.00417.22
8.1.180.0000.00818.10
8.1.170.0000.00818.52
8.1.160.0000.00718.73
8.1.150.0080.00018.86
8.1.140.0040.00418.75
8.1.130.0030.00520.24
8.1.120.0030.00717.41
8.1.110.0000.00717.39
8.1.100.0030.00617.38
8.1.90.0040.00717.38
8.1.80.0000.00717.45
8.1.70.0040.00417.29
8.1.60.0040.00417.56
8.1.50.0040.00417.53
8.1.40.0080.00017.43
8.1.30.0030.00617.53
8.1.20.0000.00817.57
8.1.10.0000.00717.45
8.1.00.0000.00717.39
8.0.300.0000.00719.94
8.0.290.0030.00716.63
8.0.280.0000.00718.37
8.0.270.0000.00716.67
8.0.260.0040.00418.36
8.0.250.0040.00416.77
8.0.240.0040.00416.82
8.0.230.0070.00016.79
8.0.220.0070.00016.73
8.0.210.0080.00016.71
8.0.200.0000.00716.93
8.0.190.0030.00316.86
8.0.180.0000.00716.75
8.0.170.0030.00616.85
8.0.160.0060.00316.71
8.0.150.0000.00716.77
8.0.140.0080.00016.82
8.0.130.0050.00013.26
8.0.120.0070.00016.70
8.0.110.0070.00016.75
8.0.100.0050.00216.74
8.0.90.0040.00316.79
8.0.80.0130.00516.77
8.0.70.0030.00516.60
8.0.60.0050.00316.85
8.0.50.0040.00416.84
8.0.30.0110.00916.94
8.0.20.0060.01416.71
8.0.10.0070.00017.00
8.0.00.0130.00516.73
7.4.330.0020.00216.64
7.4.320.0040.00416.53
7.4.300.0060.00016.43
7.4.290.0040.00416.58
7.4.280.0000.00816.61
7.4.270.0030.00616.61
7.4.260.0040.00416.48
7.4.250.0000.00816.36
7.4.240.0070.00016.52
7.4.230.0000.00716.34
7.4.220.0040.00416.59
7.4.210.0090.00816.58
7.4.200.0080.00016.61
7.4.160.0130.00516.46
7.4.130.0150.00616.54
7.4.120.0090.00916.49
7.4.110.0040.01316.51
7.4.100.0030.01416.36
7.4.90.0200.00316.47
7.4.80.0120.00819.39
7.4.70.0180.00416.58
7.4.60.0090.00916.33
7.4.50.0070.00216.58
7.4.40.0160.00016.54
7.4.10.0060.00916.39
7.4.00.0070.01015.53
7.3.330.0000.00513.09
7.3.320.0030.00313.19
7.3.310.0070.00016.27
7.3.300.0030.00316.13
7.3.290.0080.00816.24
7.3.280.0090.00716.15
7.3.260.0110.00716.35
7.3.240.0120.00716.50
7.3.230.0070.01116.31
7.3.210.0120.00916.29
7.3.200.0130.01016.16
7.3.190.0110.00616.25
7.3.180.0100.00716.34
7.3.170.0100.00616.52
7.3.160.0040.01916.57
7.3.130.0140.00716.20
7.3.120.0040.01416.42
7.3.110.0120.00316.16
7.3.100.0070.01116.48
7.3.90.0120.00616.54
7.3.80.0040.01116.35
7.3.70.0100.00716.11
7.3.60.0100.00316.25
7.3.50.0110.00416.31
7.3.40.0050.00915.40
7.3.30.0030.00915.38
7.3.20.0080.01516.14
7.3.10.0080.00816.53
7.3.00.0430.00716.40
7.2.330.0110.00916.25
7.2.320.0070.01016.57
7.2.310.0170.00316.39
7.2.300.0060.01016.45
7.2.290.0080.00816.66
7.2.260.0130.00716.57
7.2.250.0070.01316.40
7.2.240.0040.01416.32
7.2.230.0100.01016.45
7.2.220.0030.01416.55
7.2.210.0120.00016.56
7.2.200.0000.01716.38
7.2.190.0060.00916.60
7.2.180.0040.01216.50
7.2.170.0080.01315.40
7.2.160.0080.00215.65
7.2.150.0130.00216.46
7.2.140.0110.00716.53
7.2.130.0060.00916.41
7.2.120.0100.00516.41
7.2.110.0100.00616.55
7.2.100.0070.00916.55
7.2.90.0100.01116.55
7.2.80.0140.00716.47
7.2.70.0120.00916.66
7.2.60.0100.00816.62
7.2.50.0070.01216.46
7.2.40.0130.01016.54
7.2.30.0160.00616.44
7.2.20.0060.00816.57
7.2.10.0090.00616.51
7.2.00.0050.01416.62
7.1.330.0070.00717.12
7.1.320.0070.00717.28
7.1.310.0080.00417.27
7.1.300.0130.00717.30
7.1.290.0090.00317.36
7.1.280.0110.00915.53
7.1.270.0090.00315.40
7.1.260.0130.00215.54
7.1.250.0080.00815.61
7.1.240.0070.01017.34
7.1.230.0110.00717.18
7.1.220.0000.01317.28
7.1.210.0000.01317.19
7.1.200.0070.00717.31
7.1.190.0120.00317.21
7.1.180.0070.00717.34
7.1.170.0070.00717.34
7.1.160.0040.01417.24
7.1.150.0070.00717.25
7.1.140.0070.00717.20
7.1.130.0000.01217.20
7.1.120.0030.00817.32
7.1.110.0030.01017.32
7.1.100.0030.00617.10
7.1.90.0060.00617.20
7.1.80.0000.01017.24
7.1.70.0060.00317.37
7.1.60.0030.01217.18
7.1.50.0030.01017.29
7.1.40.0100.00617.25
7.1.30.0030.00917.25
7.1.20.0070.00717.35
7.1.10.0070.00717.27
7.1.00.0100.00717.26

preferences:
28.12 ms | 403 KiB | 5 Q