3v4l.org

run code in 300+ PHP versions simultaneously
<?php /** * Flatten a multi-dimensional array to a single-level array, * sorting the entries in order to depth first. * * @param array $carry Optional Array to initialize * @param mixed $subject Array or value that has data in potential multi-dimensions. * * @return array */ function array_flatten(?array $carry = [], $subject): array { return array_reduce((array) $subject, function(array $carry, $item) { return is_array($item) ? array_flatten($carry, $item) : array_merge($carry, (array) $item); }, (array) $carry); } print_r(array_flatten(null, array( array('A', array('B', array('CC','CCCC','CCCCCC'), array('DDD','EFG','HIJ','LMNOP') ) ), array('2'), 'b', array(array(),array(),array()), ))); $array = array(1,2,[3,4],5,'six',array(array('78',9)),10); print_r(array_reduce($array, "array_flatten"));

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)
8.3.60.0110.00718.52
8.3.50.0040.01118.20
8.3.40.0080.00818.84
8.3.30.0090.00618.53
8.3.20.0070.00720.14
8.3.10.0040.00422.04
8.3.00.0000.00823.72
8.2.180.0090.00918.54
8.2.170.0110.00422.96
8.2.160.0070.00722.13
8.2.150.0070.00024.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0040.00419.49
8.2.110.0070.00321.13
8.2.100.0040.00817.72
8.2.90.0040.00420.42
8.2.80.0030.00617.97
8.2.70.0030.00518.03
8.2.60.0060.00318.09
8.2.50.0040.00418.22
8.2.40.0040.00420.55
8.2.30.0000.00719.27
8.2.20.0040.00418.15
8.2.10.0000.00718.20
8.2.00.0040.00418.14
8.1.280.0150.00725.92
8.1.270.0070.00021.71
8.1.260.0060.00326.35
8.1.250.0040.00428.09
8.1.240.0160.00622.53
8.1.230.0040.00720.89
8.1.220.0030.00517.76
8.1.210.0040.00418.90
8.1.200.0030.00517.35
8.1.190.0040.00417.22
8.1.180.0000.00818.10
8.1.170.0030.00518.61
8.1.160.0050.00318.92
8.1.150.0040.00420.18
8.1.140.0040.00417.63
8.1.130.0050.00219.04
8.1.120.0040.00417.46
8.1.110.0040.00417.46
8.1.100.0080.00017.47
8.1.90.0030.00617.44
8.1.80.0030.00617.47
8.1.70.0040.00417.41
8.1.60.0080.00017.62
8.1.50.0050.00317.52
8.1.40.0030.00517.54
8.1.30.0000.00817.63
8.1.20.0000.00817.68
8.1.10.0000.00717.40
8.1.00.0040.00417.48
8.0.300.0070.00019.91
8.0.290.0000.00716.63
8.0.280.0000.00718.34
8.0.270.0000.00717.26
8.0.260.0000.00618.46
8.0.250.0060.00316.89
8.0.240.0000.00817.04
8.0.230.0000.00716.90
8.0.220.0050.00216.92
8.0.210.0000.00716.87
8.0.200.0060.00317.02
8.0.190.0070.00017.00
8.0.180.0110.00016.97
8.0.170.0080.00317.00
8.0.160.0030.00616.96
8.0.150.0050.00316.91
8.0.140.0040.00416.96
8.0.130.0000.00613.36
8.0.120.0070.00016.84
8.0.110.0070.00016.79
8.0.100.0000.00816.92
8.0.90.0040.00417.00
8.0.80.0060.01316.91
8.0.70.0040.00416.99
8.0.60.0080.00016.93
8.0.50.0040.00416.88
8.0.30.0080.00917.23
8.0.20.0100.00917.40
8.0.10.0000.00717.11
8.0.00.0100.01316.78
7.4.330.0000.00415.55
7.4.320.0000.00616.54
7.4.300.0000.00616.62
7.4.290.0030.00316.53
7.4.280.0030.00616.65
7.4.270.0030.00316.43
7.4.260.0000.00716.57
7.4.250.0040.00416.57
7.4.240.0040.00416.47
7.4.230.0070.00016.40
7.4.220.0130.01316.44
7.4.210.0070.00716.66
7.4.200.0000.00716.63
7.4.160.0060.00916.53
7.4.150.0110.00717.40
7.4.140.0080.01117.86
7.4.130.0180.00416.52
7.4.120.0080.00916.42
7.4.110.0140.00716.34
7.4.100.0070.01016.45
7.4.90.0030.01416.49
7.4.80.0060.01519.39
7.4.70.0070.01016.35
7.4.60.0090.00616.62
7.4.50.0100.00716.39
7.4.40.0220.00316.61
7.4.30.0070.01716.52
7.4.10.0040.01414.71
7.4.00.0080.00814.93
7.3.330.0000.00613.27
7.3.320.0000.00513.29
7.3.310.0070.00016.09
7.3.300.0060.00016.32
7.3.290.0060.00916.33
7.3.280.0090.00816.27
7.3.270.0100.00617.40
7.3.260.0120.00716.38
7.3.250.0080.00916.39
7.3.240.0100.00716.52
7.3.230.0150.00316.43
7.3.210.0060.01216.48
7.3.200.0120.01216.49
7.3.190.0100.00616.44
7.3.180.0060.01316.45
7.3.170.0130.00316.51
7.3.160.0100.00716.54
7.3.130.0030.01314.62
7.3.120.0070.01414.93
7.3.110.0030.01214.69
7.3.100.0070.00714.89
7.3.90.0090.00614.60
7.3.80.0000.00914.85
7.3.70.0030.01014.65
7.3.60.0060.00314.88
7.3.50.0030.01015.05
7.3.40.0050.00514.90
7.3.30.0030.00614.93
7.3.20.0030.01016.57
7.3.10.0030.00616.40
7.3.00.0080.00616.77
7.2.330.0070.01116.69
7.2.320.0120.00916.48
7.2.310.0100.00716.64
7.2.300.0060.01216.37
7.2.290.0090.00916.59
7.2.260.0060.01314.94
7.2.250.0070.01315.04
7.2.240.0040.01215.15
7.2.230.0130.00315.16
7.2.220.0100.00014.96
7.2.210.0000.01214.99
7.2.200.0040.01415.25
7.2.190.0080.00414.98
7.2.180.0000.01714.95
7.2.170.0040.01114.73
7.2.160.0060.00614.81
7.2.150.0070.00716.59
7.2.140.0060.00616.84
7.2.130.0000.01016.82
7.2.120.0130.00316.71
7.2.110.0060.00616.82
7.2.100.0030.01016.86
7.2.90.0000.01317.05
7.2.80.0110.00317.00
7.2.70.0070.01117.00
7.2.60.0030.00816.95
7.2.50.0070.00416.92
7.2.40.0040.00716.63
7.2.30.0100.00316.93
7.2.20.0090.00616.79
7.2.10.0060.00616.80
7.2.00.0000.01116.93
7.1.330.0100.00716.01
7.1.320.0040.01215.93
7.1.310.0060.00915.71
7.1.300.0030.00915.75
7.1.290.0070.00715.58
7.1.280.0040.01215.75
7.1.270.0030.00615.89
7.1.260.0000.01715.70
7.1.250.0070.00315.74
7.1.240.0070.00715.77
7.1.230.0120.00315.93
7.1.220.0060.01015.90
7.1.210.0040.00715.81
7.1.200.0100.00315.62
7.1.190.0040.00815.87
7.1.180.0100.00015.70
7.1.170.0060.00315.79
7.1.160.0030.01015.86
7.1.150.0070.00715.89
7.1.140.0030.00715.88
7.1.130.0070.00715.86
7.1.120.0040.00715.55
7.1.110.0060.00915.96
7.1.100.0820.01115.92
7.1.90.1210.00815.79
7.1.80.0790.01116.14
7.1.70.0750.00815.67
7.1.60.0890.01124.38
7.1.50.0800.01524.25
7.1.40.0720.01424.20
7.1.30.0710.01724.13
7.1.20.0610.01224.20
7.1.10.0460.01215.21
7.1.00.0480.00515.35
7.0.330.0030.00515.02
7.0.320.0060.00915.32
7.0.310.0140.00015.55
7.0.300.0030.00715.13
7.0.290.0030.00715.04
7.0.280.0070.00315.06
7.0.270.0090.00615.24
7.0.260.0040.01115.23
7.0.250.0060.01015.16
7.0.240.0690.01015.52
7.0.230.1090.00815.56
7.0.220.0950.00515.49
7.0.210.0930.00714.85
7.0.200.0890.00714.79
7.0.190.0640.00614.84
7.0.180.0880.00814.71
7.0.170.0500.00814.75
7.0.160.0760.00714.84
7.0.150.0360.00914.59
7.0.140.0460.00714.73
7.0.130.0490.01014.84
7.0.120.0500.00714.81
7.0.110.0440.01114.85
7.0.100.0370.00814.90
7.0.90.0430.00814.90
7.0.80.0540.00714.86
7.0.70.0490.01014.93
7.0.60.0610.00914.69
7.0.50.0470.00714.96
7.0.40.0440.00813.91
7.0.30.0410.00713.91
7.0.20.0440.01213.88
7.0.10.0640.00513.63
7.0.00.0650.01013.83
5.6.400.0060.00314.16
5.6.390.0070.00714.12
5.6.380.0080.00613.98
5.6.370.0000.01614.39
5.6.360.0030.01014.14
5.6.350.0070.00713.96
5.6.340.0090.00314.05
5.6.330.0040.00813.89
5.6.320.0070.01013.93
5.6.310.0090.00314.27
5.6.300.0060.00614.39
5.6.290.0030.01013.95
5.6.280.0060.00614.38
5.6.270.0030.01014.16
5.6.260.0000.01614.27
5.6.250.0070.00714.44
5.6.240.0040.01114.02
5.6.230.0000.01514.23
5.6.220.0100.00013.89
5.6.210.0030.01014.42
5.6.200.0040.00814.10
5.6.190.0060.00314.10
5.6.180.0090.00314.17
5.6.170.0030.01013.92
5.6.160.0080.00814.07
5.6.150.0080.00814.03
5.6.140.0060.00914.32
5.6.130.0100.00714.21
5.6.120.0030.00714.14
5.6.110.0030.00914.18
5.6.100.0040.00813.88
5.6.90.0040.00814.00
5.6.80.0090.00614.11
5.6.70.0070.00714.11
5.6.60.0040.01114.02
5.6.50.0090.00613.87
5.6.40.0070.00714.27
5.6.30.0030.01014.24
5.6.20.0030.01414.10
5.6.10.0090.00913.92
5.6.00.0030.01013.95

preferences:
64.08 ms | 400 KiB | 5 Q