3v4l.org

run code in 300+ PHP versions simultaneously
<?php function flatten_array($array, $flat = array()) { foreach($array as $k=>$v){ $k = strval($k); if(!is_array($v)){ $i = 0; while(true){ $i++; $key = $k.strval($i); if(!isset($flat[$key])) break; } unset($i); $flat[$key] = $v; unset($array[$k]); }else{ $flat = flatten_array($v, $flat); unset($array[$k]); } } return $flat; } $a = array_fill(0, 10, array_fill(0, 10, 0)); $array = flatten_array($a); var_dump($array);

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)
8.3.60.0100.00716.63
8.3.50.0110.01118.03
8.3.40.0040.01118.55
8.3.30.0060.00919.04
8.3.20.0040.00420.39
8.3.10.0050.00321.73
8.3.00.0050.00319.14
8.2.180.0040.01516.32
8.2.170.0120.00322.96
8.2.160.0090.01222.26
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0070.01026.16
8.2.120.0100.00017.77
8.2.110.0040.00420.57
8.2.100.0110.00418.16
8.2.90.0000.00819.17
8.2.80.0000.00817.97
8.2.70.0060.00317.63
8.2.60.0040.00418.05
8.2.50.0080.00018.07
8.2.40.0000.00918.28
8.2.30.0000.00719.45
8.2.20.0060.00317.80
8.2.10.0030.00518.20
8.2.00.0050.00317.88
8.1.280.0090.00625.92
8.1.270.0030.00718.99
8.1.260.0060.00326.35
8.1.250.0030.00928.09
8.1.240.0070.00323.79
8.1.230.0040.01119.07
8.1.220.0050.00317.80
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0090.00017.35
8.1.180.0040.00418.10
8.1.170.0040.00418.59
8.1.160.0070.00021.93
8.1.150.0050.00318.88
8.1.140.0080.00019.28
8.1.130.0020.00517.87
8.1.120.0000.00717.51
8.1.110.0080.00017.43
8.1.100.0000.00717.36
8.1.90.0040.00417.50
8.1.80.0040.00417.43
8.1.70.0070.00017.52
8.1.60.0040.00417.49
8.1.50.0050.00517.43
8.1.40.0050.00317.47
8.1.30.0000.00817.66
8.1.20.0060.00317.57
8.1.10.0000.00817.58
8.1.00.0040.00417.48
8.0.300.0040.00418.77
8.0.290.0050.00316.71
8.0.280.0000.00718.45
8.0.270.0040.00417.18
8.0.260.0050.00317.14
8.0.250.0050.00217.03
8.0.240.0000.00716.89
8.0.230.0000.00716.91
8.0.220.0040.00416.83
8.0.210.0050.00216.96
8.0.200.0000.00617.00
8.0.190.0040.00416.91
8.0.180.0070.00017.01
8.0.170.0060.00316.91
8.0.160.0000.00716.93
8.0.150.0070.00016.74
8.0.140.0040.00416.93
8.0.130.0060.00013.45
8.0.120.0040.00416.95
8.0.110.0000.00816.84
8.0.100.0050.00317.01
8.0.90.0040.00417.03
8.0.80.0030.01616.93
8.0.70.0000.00716.84
8.0.60.0000.00816.93
8.0.50.0050.00217.03
8.0.30.0170.01017.08
8.0.20.0130.00817.40
8.0.10.0080.00017.03
8.0.00.0110.01216.87
7.4.330.0030.00315.03
7.4.320.0000.00616.65
7.4.300.0000.00716.51
7.4.290.0000.00716.50
7.4.280.0040.00416.64
7.4.270.0030.00316.60
7.4.260.0070.00016.39
7.4.250.0050.00316.58
7.4.240.0050.00216.58
7.4.230.0000.00716.59
7.4.220.0100.01316.64
7.4.210.0080.00816.58
7.4.200.0040.00316.62
7.4.160.0130.00416.64
7.4.150.0110.00717.40
7.4.140.0120.01217.86
7.4.130.0160.00416.55
7.4.120.0100.01016.57
7.4.110.0140.01116.33
7.4.100.0070.02016.62
7.4.90.0090.01516.59
7.4.80.0120.01219.39
7.4.70.0160.01116.49
7.4.60.0120.00616.43
7.4.50.0080.00016.39
7.4.40.0140.00816.56
7.4.30.0180.00716.75
7.4.00.0120.00014.78
7.3.330.0030.00313.36
7.3.320.0060.00013.44
7.3.310.0050.00216.33
7.3.300.0070.00016.34
7.3.290.0000.00716.39
7.3.280.0100.00816.41
7.3.270.0150.00517.40
7.3.260.0100.01016.50
7.3.250.0120.00916.49
7.3.240.0120.00816.57
7.3.230.0090.01816.39
7.3.210.0090.00916.64
7.3.200.0040.01319.39
7.3.190.0120.00616.63
7.3.180.0080.00816.44
7.3.170.0080.01216.64
7.3.160.0050.01416.50
7.2.330.0100.01016.84
7.2.320.0070.01116.87
7.2.310.0090.00916.55
7.2.300.0150.01116.60
7.2.290.0120.00616.84
7.2.00.0000.01219.45
7.1.200.0090.00615.60
7.1.100.0200.01016.54
7.1.70.0040.00416.88
7.1.60.0060.01919.46
7.1.50.0040.00717.06
7.1.00.0030.07722.54
7.0.200.0030.00915.05
7.0.140.0000.06322.09
7.0.60.0000.04319.96
7.0.50.0070.06717.84
7.0.40.0000.04720.13
7.0.30.0470.05720.20
7.0.20.0300.05020.23
7.0.10.0100.04720.23
7.0.00.0070.05720.32
5.6.280.0030.07721.05
5.6.210.0100.07320.47
5.6.200.0030.05318.26
5.6.190.0100.04020.57
5.6.180.0270.05020.69
5.6.170.0200.07020.39
5.6.160.0030.04320.45
5.6.150.0100.05318.14
5.6.140.0030.04318.18
5.6.130.0100.07018.30
5.6.120.0130.08321.15
5.6.110.0030.08020.99
5.6.100.0100.06021.00
5.6.90.0000.04321.00
5.6.80.0100.08020.38
5.5.350.0330.07320.41
5.5.340.0100.07717.99
5.5.330.0030.04320.27
5.5.320.0430.08020.28
5.5.310.0300.05020.27
5.5.300.0070.08317.93
5.5.290.0070.03718.09
5.5.280.0070.07320.78
5.5.270.0100.03720.75
5.5.260.0100.08020.77
5.5.250.0030.04320.69
5.5.240.0370.07720.15
5.4.450.0600.08019.47
5.4.440.0830.05319.47
5.4.430.1770.06019.44
5.4.420.0800.05319.45
5.4.410.1000.06019.04
5.4.400.0700.06018.86
5.4.390.0130.05718.76
5.4.380.0170.05318.59
5.4.370.0300.05318.51
5.4.360.0270.05018.63
5.4.350.0170.08318.71
5.4.340.0200.07718.49
5.4.320.0230.05718.48
5.4.310.0200.05018.48
5.4.300.0230.05318.57
5.4.290.0130.05718.56
5.4.280.0130.06318.46
5.4.270.0200.06318.78
5.4.260.0200.06318.79
5.4.250.0070.06318.75
5.4.240.0200.05318.82
5.4.230.0130.05718.79
5.4.220.0270.04718.58
5.4.210.0230.05018.73
5.4.200.0270.04716.55
5.4.190.0270.04318.71
5.4.180.0130.05718.61
5.4.170.0230.05018.74
5.4.160.0200.05318.71
5.4.150.0270.04718.56
5.4.140.0270.06016.27
5.4.130.0230.06016.31
5.4.120.0070.06016.24
5.4.110.0170.05016.29
5.4.100.0130.05716.32
5.4.90.0170.06316.30
5.4.80.0230.04316.22
5.4.70.0130.05716.19
5.4.60.0200.04716.43
5.4.50.0270.06316.21
5.4.40.0130.05716.29
5.4.30.0300.04016.24
5.4.20.0200.05016.27
5.4.10.0170.05716.32
5.4.00.0200.04715.69
5.3.290.0170.05714.85
5.3.280.0300.05314.66
5.3.270.0200.05314.81
5.3.260.0270.05714.66
5.3.250.0130.05714.68
5.3.240.0200.05014.69
5.3.230.0100.06314.75
5.3.220.0170.05314.71
5.3.210.0130.08014.77
5.3.200.0270.06314.77
5.3.190.0200.05014.70
5.3.180.0100.06014.58
5.3.170.0130.05714.71
5.3.160.0170.05014.69
5.3.150.0230.06314.64
5.3.140.0230.06714.71
5.3.130.0230.05314.60
5.3.120.0070.06714.73
5.3.110.0200.05014.66
5.3.100.0170.06014.22
5.3.90.0170.05314.08
5.3.80.0170.05314.08
5.3.70.0370.05314.06
5.3.60.0230.05714.12
5.3.50.0170.05014.09
5.3.40.0430.04014.02
5.3.30.0130.05014.03
5.3.20.0130.05013.83
5.3.10.0230.06313.84
5.3.00.0170.06013.86
5.2.170.0170.04011.27
5.2.160.0200.04011.28
5.2.150.0100.04711.21
5.2.140.0100.05011.16
5.2.130.0170.04011.12
5.2.120.0100.04711.24
5.2.110.0300.03711.11
5.2.100.0070.05011.13
5.2.90.0070.05011.22
5.2.80.0230.05311.12
5.2.70.0100.06011.17
5.2.60.0130.05011.19
5.2.50.0170.03711.04
5.2.40.0200.04711.16
5.2.30.0170.05311.04
5.2.20.0130.04010.99
5.2.10.0170.05010.88
5.2.00.0230.04010.80
5.1.60.0130.04710.22
5.1.50.0070.04010.23
5.1.40.0070.04310.03
5.1.30.0170.03710.57
5.1.20.0170.03010.48
5.1.10.0270.02310.12
5.1.00.0100.04010.27
5.0.50.0070.0408.78
5.0.40.0100.0378.48
5.0.30.0100.0578.24
5.0.20.0070.0308.26
5.0.10.0000.0378.29
5.0.00.0170.0408.34
4.4.90.0100.0306.01
4.4.80.0100.0305.95
4.4.70.0030.0276.02
4.4.60.0030.0275.96
4.4.50.0070.0236.06
4.4.40.0030.0406.05
4.4.30.0130.0275.92
4.4.20.0100.0276.05
4.4.10.0030.0276.11
4.4.00.0100.0305.96
4.3.110.0100.0205.96
4.3.100.0100.0175.85
4.3.90.0070.0235.90
4.3.80.0100.0335.86
4.3.70.0030.0275.88
4.3.60.0070.0305.83
4.3.50.0100.0305.83
4.3.40.0130.0405.79
4.3.30.0030.0274.61
4.3.20.0070.0204.61
4.3.10.0030.0234.63
4.3.00.0100.0239.46

preferences:
57.01 ms | 400 KiB | 5 Q